Trigger Click

$("#checkAll").click(function(){
    $('input:checkbox').click();
});

OR

$("#checkAll").click(function(){
    $('input:checkbox').trigger('click');
});

OR

$("#checkAll").click(function(){
    $('input:checkbox').prop('checked', this.checked);
});

You could do:

var numberOfChecked = $('input:checkbox:checked').length;
var totalCheckboxes = $('input:checkbox').length;
var numberNotChecked = totalCheckboxes - numberOfChecked;

EDIT

Or even simple

var numberNotChecked = $('input:checkbox:not(":checked")').length;

You need to use the square brackets notation to have values sent as an array:

<form method='post' id='userform' action='thisform.php'>
<tr>
    <td>Trouble Type</td>
    <td>
    <input type='checkbox' name='checkboxvar[]' value='Option One'>1<br>
    <input type='checkbox' name='checkboxvar[]' value='Option Two'>2<br>
    <input type='checkbox' name='checkboxvar[]' value='Option Three'>3
    </td>
</tr>
</table>
<input type='submit' class='buttons'>
</form>

Please note though, that only the values of only checked checkboxes will be sent.

Another option is to use a ToggleButton with null background and a custom button.

Bellow an example that includes a selector to the text color as well.

<ToggleButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:button="@drawable/toggle_selector"
    android:background="@null"
    android:paddingLeft="10dp"
    android:layout_centerHorizontal="true"
    android:gravity="center"
    android:textColor="@drawable/toggle_text"
    android:textOn="My on state"
    android:textOff="My off state" />

toggle_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item
        android:state_checked="true"
        android:drawable="@drawable/state_on" />

    <item
        android:drawable="@drawable/state_off" />

</selector>

toggle_text.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item
        android:state_checked="true"
        android:color="@color/app_color" />

    <item
        android:color="@android:color/darker_gray" />

</selector>

I don't think enough time was paid attention to the schema considerations brought up in the original post. So, here is something to consider for any newbies.

Let's say you went ahead and built this solution. All of your menial values are conctenated into a single value and stored in the database. You are indeed saving [a little] space in your database and some time coding.

Now let's consider that you must perform the frequent and easy task of adding a new checkbox between the current checkboxes 3 & 4. Your development manager, customer, whatever expects this to be a simple change.

So you add the checkbox to the UI (the easy part). Your looping code would already concatenate the values no matter how many checkboxes. You also figure your database field is just a varchar or other string type so it should be fine as well.

What happens when customers or you try to view the data from before the change? You're essentially serializing from left to right. However, now the values after 3 are all off by 1 character. What are you going to do with all of your existing data? Are you going write an application, pull it all back out of the database, process it to add in a default value for the new question position and then store it all back in the database? What happens when you have several new values a week or month apart? What if you move the locations and jQuery processes them in a different order? All your data is hosed and has to be reprocessed again to rearrange it.

The whole concept of NOT providing a tight key-value relationship is ludacris and will wind up getting you into trouble sooner rather than later. For those of you considering this, please don't. The other suggestions for schema changes are fine. Use a child table, more fields in the main table, a question-answer table, etc. Just don't store non-labeled data when the structure of that data is subject to change.

1. I have just simplified little bit for those whose are using list of value Object. XYZ.Comonent.html

   <div class="form-group">
           <label for="options">Options :</label>
           <div *ngFor="let option of xyzlist">
               <label>
                   <input type="checkbox"
                          name="options"
                          value="{{option.Id}}"
   
                          (change)="onClicked(option, $event)"/>
                   {{option.Id}}-- {{option.checked}}
               </label>
           </div>
           <button type="submit">Submit</button>
       </div> 
   

   ** XYZ.Component.ts**.

2. create a list -- xyzlist.

3. assign values, I am passing values from Java in this list.
4. Values are Int-Id, boolean -checked (Can Pass in Component.ts).

5. Now to get value in Componenet.ts.

   xyzlist;//Just created a list
   onClicked(option, event) {
       console.log("event  " + this.xyzlist.length);
       console.log("event  checked" + event.target.checked);
       console.log("event  checked" + event.target.value);
       for (var i = 0; i < this.xyzlist.length; i++) {
           console.log("test --- " + this.xyzlist[i].Id;
           if (this.xyzlist[i].Id == event.target.value) {
               this.xyzlist[i].checked = event.target.checked;
           }
           console.log("after update of checkbox" + this.xyzlist[i].checked);
   
       }
   

I found a combination of the first two answers gave me what I needed. I used the CurrentCellDirtyStateChanged event and inspected the EditedFormattedValue.

private void dgv_CurrentCellDirtyStateChanged(object sender, EventArgs e)
{
   DataGridView dgv = (DataGridView)sender;
   DataGridViewCell cell = dgv.CurrentCell;
   if (cell.RowIndex >= 0 && cell.ColumnIndex == 3) // My checkbox column
     {
        // If checkbox checked, copy value from col 1 to col 2
        if (dgv.Rows[cell.RowIndex].Cells[cell.ColumnIndex].EditedFormattedValue != null && dgv.Rows[cell.RowIndex].Cells[cell.ColumnIndex].EditedFormattedValue.Equals(true))
        {
           dgv.Rows[cell.RowIndex].Cells[1].Value = dgv.Rows[cell.RowIndex].Cells[2].Value;
        }
     }
}

Checkbox

You can create your own CheckBox control extending UIButton with Swift:

import UIKit

class CheckBox: UIButton {
    // Images
    let checkedImage = UIImage(named: "ic_check_box")! as UIImage
    let uncheckedImage = UIImage(named: "ic_check_box_outline_blank")! as UIImage
    
    // Bool property
    var isChecked: Bool = false {
        didSet {
            if isChecked == true {
                self.setImage(checkedImage, for: UIControl.State.normal)
            } else {
                self.setImage(uncheckedImage, for: UIControl.State.normal)
            }
        }
    }
        
    override func awakeFromNib() {
        self.addTarget(self, action:#selector(buttonClicked(sender:)), for: UIControl.Event.touchUpInside)
        self.isChecked = false
    }
        
    @objc func buttonClicked(sender: UIButton) {
        if sender == self {
            isChecked = !isChecked
        }
    }
}

And then add it to your views with Interface Builder:

Radio Buttons

Radio Buttons can be solved in a similar way.

For example, the classic gender selection Woman - Man:

import UIKit

class RadioButton: UIButton {
    var alternateButton:Array<RadioButton>?
    
    override func awakeFromNib() {
        self.layer.cornerRadius = 5
        self.layer.borderWidth = 2.0
        self.layer.masksToBounds = true
    }
    
    func unselectAlternateButtons() {
        if alternateButton != nil {
            self.isSelected = true
            
            for aButton:RadioButton in alternateButton! {
                aButton.isSelected = false
            }
        } else {
            toggleButton()
        }
    }
    
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        unselectAlternateButtons()
        super.touchesBegan(touches, with: event)
    }
    
    func toggleButton() {
        self.isSelected = !isSelected
    }
    
    override var isSelected: Bool {
        didSet {
            if isSelected {
                self.layer.borderColor = Color.turquoise.cgColor
            } else {
                self.layer.borderColor = Color.grey_99.cgColor
            }
        }
    }
}

You can init your radio buttons like this:

    override func awakeFromNib() {
        self.view.layoutIfNeeded()
        
        womanRadioButton.selected = true
        manRadioButton.selected = false
    }
    
    override func viewDidLoad() {
        womanRadioButton?.alternateButton = [manRadioButton!]
        manRadioButton?.alternateButton = [womanRadioButton!]
    }

Hope it helps.

Accordingly to W3C checked input's attribute can be absent/ommited or have "checked" as its value. This does not invalidate other values because there's no restriction to the browser implementation to allow values like "true", "on", "yes" and so on. To guarantee that you'll write a cross-browser checkbox/radio use checked="checked", as recommended by W3C.

disabled, readonly and ismap input's attributes go on the same way.

EDITED

empty is not a valid value for checked, disabled, readonly and ismap input's attributes, as warned by @Quentin

$('.checkall').change(function() {
    var checkboxes = $(this).closest('table').find('td').find(':checkbox');
    if($(this).is(':checked')) {
        checkboxes.attr('checked', 'checked');
    } else {
        checkboxes.removeAttr('checked');
    }
});

You can use peseudo elements like this:

input[type=checkbox] {_x000D_
  width: 30px;_x000D_
  height: 30px;_x000D_
  margin-right: 8px;_x000D_
  cursor: pointer;_x000D_
  font-size: 27px;_x000D_
}_x000D_
_x000D_
input[type=checkbox]:after {_x000D_
  content: " ";_x000D_
  background-color: #9FFF9D;_x000D_
  display: inline-block;_x000D_
  visibility: visible;_x000D_
}_x000D_
_x000D_
input[type=checkbox]:checked:after {_x000D_
  content: "\2714";_x000D_
}

<label>Checkbox label_x000D_
      <input type="checkbox">_x000D_
    </label>

I've a sample for multiple data with their subnode 3 list , each list has attribute and child attribute:

var list1 = {
    name: "Role A",
    name_selected: false,
    subs: [{
        sub: "Read",
        id: 1,
        selected: false
    }, {
        sub: "Write",
        id: 2,
        selected: false
    }, {
        sub: "Update",
        id: 3,
        selected: false
    }],
};
var list2 = {
    name: "Role B",
    name_selected: false,
    subs: [{
        sub: "Read",
        id: 1,
        selected: false
    }, {
        sub: "Write",
        id: 2,
        selected: false
    }],
};
var list3 = {
    name: "Role B",
    name_selected: false,
    subs: [{
        sub: "Read",
        id: 1,
        selected: false
    }, {
        sub: "Update",
        id: 3,
        selected: false
    }],
};

Add these to Array :

newArr.push(list1);
newArr.push(list2);
newArr.push(list3);
$scope.itemDisplayed = newArr;

Show them in html:

<li ng-repeat="item in itemDisplayed" class="ng-scope has-pretty-child">
    <div>
        <ul>
            <input type="checkbox" class="checkall" ng-model="item.name_selected" ng-click="toggleAll(item)" />
            <span>{{item.name}}</span>
            <div>
                <li ng-repeat="sub in item.subs" class="ng-scope has-pretty-child">
                    <input type="checkbox" kv-pretty-check="" ng-model="sub.selected" ng-change="optionToggled(item,item.subs)"><span>{{sub.sub}}</span>
                </li>
            </div>
        </ul>
    </div>
</li>

And here is the solution to check them:

$scope.toggleAll = function(item) {
    var toogleStatus = !item.name_selected;
    console.log(toogleStatus);
    angular.forEach(item, function() {
        angular.forEach(item.subs, function(sub) {
            sub.selected = toogleStatus;
        });
    });
};

$scope.optionToggled = function(item, subs) {
    item.name_selected = subs.every(function(itm) {
        return itm.selected;
    })
}

jsfiddle demo

Here's a trick that worked for me:

handleClick = e => {
    if (e.target === e.currentTarget) {
        // do something
    } else {
        // do something else
    }
}

Explanation: I attached handleClick to a backdrop of a modal window, but it also fired on every click inside of a modal window (because it was IN the backdrop div). So I added the condition (e.target === e.currentTarget), which is only fulfilled when a backdrop is clicked.

The profile choices need to be setup as a ManyToManyField for this to work correctly.

So... your model should be like this:

class Choices(models.Model):
  description = models.CharField(max_length=300)

class Profile(models.Model):
  user = models.ForeignKey(User, blank=True, unique=True, verbose_name='user')
  choices = models.ManyToManyField(Choices)

Then, sync the database and load up Choices with the various options you want available.

Now, the ModelForm will build itself...

class ProfileForm(forms.ModelForm):
  Meta:
    model = Profile
    exclude = ['user']

And finally, the view:

if request.method=='POST':
  form = ProfileForm(request.POST)
  if form.is_valid():
    profile = form.save(commit=False)
    profile.user = request.user
    profile.save()
else:
  form = ProfileForm()

return render_to_response(template_name, {"profile_form": form}, context_instance=RequestContext(request))

It should be mentioned that you could setup a profile in a couple different ways, including inheritance. That said, this should work for you as well.

Good luck.

Getting check status

var checked = $("#selectall").is(":checked");

Then for setting

$("input:checkbox").attr("checked",checked);

You might consider using the :checked selector, provided by jQuery. Something like this:

$('.pChk').click(function() {
    if( $('.pChk:checked').length > 0 ) {
        $("#ProjectListButton").show();
    } else {
        $("#ProjectListButton").hide();
    }
}); 

You can read database value in to a variable and then set the variable as follows

$app_container->assign('checked_flag', $db_data=='0'  ? '' : 'checked');

And in html you can just use the checked_flag variable as follows

<input type="checkbox" id="chk_test" name="chk_test" value="1" {checked_flag}>

You can use .is(':visible')

Selects all elements that are visible.

For example:

if($('#selectDiv').is(':visible')){

Also, you can get the div which is visible by:

$('div:visible').callYourFunction();

Live example:

console.log($('#selectDiv').is(':visible'));_x000D_
console.log($('#visibleDiv').is(':visible'));

#selectDiv {_x000D_
  display: none;  _x000D_
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<div id="selectDiv"></div>_x000D_
<div id="visibleDiv"></div>

Following works in bootstrap 4 and displays well in CSS, mobile and has no issues with label spacing.

CSS

.checkbox-lg .custom-control-label::before, 
.checkbox-lg .custom-control-label::after {
  top: .8rem;
  width: 1.55rem;
  height: 1.55rem;
}

.checkbox-lg .custom-control-label {
  padding-top: 13px;
  padding-left: 6px;
}


.checkbox-xl .custom-control-label::before, 
.checkbox-xl .custom-control-label::after {
  top: 1.2rem;
  width: 1.85rem;
  height: 1.85rem;
}

.checkbox-xl .custom-control-label {
  padding-top: 23px;
  padding-left: 10px;
}

HTML

<div class="custom-control custom-checkbox checkbox-lg">
      <input type="checkbox" class="custom-control-input" id="checkbox-3">
      <label class="custom-control-label" for="checkbox-3">Large checkbox</label>
    </div>

You can also make it extra large by declaring checkbox-xl

If anyone from BS team is reading this, it would be really good if you make this available right out of the box, I don't see anything for it in BS 5 either

source

Try this

 $(function() { 
  $('input[type="checkbox"]').bind('click',function() {
    $('input[type="checkbox"]').not(this).prop("checked", false);
  });
});

How about changing

<input type='checkbox' ng-click='onCompleteTodo(todo)' ng-model="todo.done">

to

<input type='checkbox' ng-change='onCompleteTodo(todo)' ng-model="todo.done">

From docs:

Evaluate given expression when user changes the input. The expression is not evaluated when the value change is coming from the model.

Note, this directive requires ngModel to be present.

Anyway, you probably need something like this:

 var val = $('#c_b :checkbox').is(':checked').val();
 $('#t').val( val );

This will get the value of the first checked checkbox on the page and insert that in the textarea with id='textarea'.

Note that in your example code you should put the checkboxes in a form.

If you don't know which checkboxes your page has (ex: if you are creating them dynamically) you can simply put a hidden field with the same name and 0 value right above the checkbox.

<input type="hidden" name="foo" value="0" />
<input type="checkbox" name="foo" value="1">

This way you will get 1 or 0 based on whether the checkbox is selected or not.

$("input[type='checkbox']:not(:checked):not('\#chkAll\')").map(function () { 
   var a = ""; 
   if (this.name != "chkAll") { 
      a = this.name + "|off"; 
   } 
   return a; 
}).get().join();

This will retrieve all unchecked checkboxes and exclude the "chkAll" checkbox that I use to check|uncheck all checkboxes. Since I want to know what value I'm passing to the database I set these to off, since the checkboxes give me a value of on.

//looking for unchecked checkboxes, but don’t include the checkbox all that checks or unchecks all checkboxes
//.map - Pass each element in the current matched set through a function, producing a new jQuery object containing the return values.

//.get - Retrieve the DOM elements matched by the jQuery object.
//.join - (javascript) joins the elements of an array into a string, and returns the string.The elements will be separated by a specified separator. The default separator is comma (,).

Using javascript seems to be unnecessary if you choose CSS3.

By using :before selector, you can do this in two lines of CSS. (no script involved).

Another advantage of this approach is that it does not rely on <label> tag and works even it is missing.

Note: in browsers without CSS3 support, checkboxes will look normal. (backward compatible).

input[type=checkbox]:before { content:""; display:inline-block; width:12px; height:12px; background:red; }
input[type=checkbox]:checked:before { background:green; }?

You can see a demo here: http://jsfiddle.net/hqZt6/1/

and this one with images:

http://jsfiddle.net/hqZt6/6/

$("#mycheckbox")[0].checked = true;
$("#mycheckbox").attr('checked', true);
$("#mycheckbox").click();

The last one will fire the click event for the checkbox, the others will not. So if you have custom code in the onclick event for the checkbox that you want to fire, use the last one.

None of the above worked for me. Here's my vanilla.js solution:

(function() {
    function handleSubmit(event) {
        var form = event.target;
        var nodes = form.querySelectorAll("input[disabled]");
        for (var node of nodes) {
            node.disabled = false;
        }
    }

    function init() {
        var submit_form_tag = document.getElementById('new_whatever');
        submit_form_tag.addEventListener('submit', handleSubmit, true);
    }

    window.onload = init_beworst;

})();

Be sure to provide an appropriate replacement for the form id.

My application has a bit of context, where some boxes are pre-checked, and others you have a limit of how many of the other boxes you can check. When you hit that limit, all the non-pre-checked boxes are disabled, and if you uncheck one all the non-pre-checked boxes are enabled again. When the user presses submit all the checked boxes are submitted to the user, regardless of whether they're pre-checked or not.

function listselect() {
                var selected = [];
                $('.SelectPhone').prop('checked', function () {

                    selected.push($(this).val());
                });

                alert(selected.length);

     <input type="checkbox" name="SelectPhone" class="SelectPhone"  value="1" />
         <input type="checkbox" name="SelectPhone" class="SelectPhone"  value="2" />
         <input type="checkbox" name="SelectPhone" class="SelectPhone"  value="3" />
        <button onclick="listselect()">show count</button>

   /* worked for me  */
     <div id="divid"> </div>
     <script type="text/javascript">
         var hold = document.getElementById("divid");
         var checkbox = document.createElement('input');
         checkbox.type = "checkbox";
         checkbox.name = "chkbox1";
         checkbox.id = "cbid";
         var label = document.createElement('label');
         var tn = document.createTextNode("Not A RoBot");
         label.htmlFor="cbid";
         label.appendChild(tn); 
         hold.appendChild(label);
         hold.appendChild(checkbox);
      </script>  

Use prop() instead of attr() to set the value of checked. Also use :checkbox in find method instead of input and be specific.

Live Demo

$("#news_list tr").click(function() {
    var ele = $(this).find('input');
    if(ele.is(':checked')){
        ele.prop('checked', false);
        $(this).removeClass('admin_checked');
    }else{
        ele.prop('checked', true);
        $(this).addClass('admin_checked');
    }
});

Use prop instead of attr for properties like checked

As of jQuery 1.6, the .attr() method returns undefined for attributes that have not been set. To retrieve and change DOM properties such as the checked, selected, or disabled state of form elements, use the .prop() method

I'm using jQuery 1.11.1 and I had troubles with setting and reading checkbox value as well.

I finally solved it by these two functions:

function setCheckboxValue(checkBoxId, checked) {
    if (checkBoxId && (checked === true || checked === false)) {
        var elem = $('#' + checkBoxId);
        if (checked === true) {
            elem.attr('checked', 'checked');
        } else {
            elem.removeAttr('checked');
        }
    }
}

function isChecked(checkBoxId) {
    return $('#' + checkBoxId).attr('checked') != null;
}

It might looks a little bit dirty but it solves all the wired issue I had among different types of browsers.

One of the elements to consider as you design your interface is on what event (when A takes place, B happens...) does the new checkbox end up being added?

Let's say there is a button next to the text box. When the button is clicked the value of the textbox is turned into a new checkbox. Our markup could resemble the following...

<div id="checkboxes">
    <input type="checkbox" /> Some label<br />
    <input type="checkbox" /> Some other label<br />
</div>

<input type="text" id="newCheckText" /> <button id="addCheckbox">Add Checkbox</button>

Based on this markup your jquery could bind to the click event of the button and manipulate the DOM.

$('#addCheckbox').click(function() {
    var text = $('#newCheckText').val();
    $('#checkboxes').append('<input type="checkbox" /> ' + text + '<br />');
});

I think you can use JSON.stringify:

// after your each loop
JSON.stringify(values);

I think you should use prop(), if you are using jQuery 1.6 onwards.

To check it you should do:

$('#test').prop('checked', true);

to uncheck it:

$('#test').prop('checked', false);

If you need to get the value of all checked checkboxes as an array:

let myArray = (function() {
    let a = [];
    $(".checkboxes:checked").each(function() {
        a.push(this.value);
    });
    return a;
})()

In jQuery:

To check the checkbox:

$("#checkboxid").attr("checked","checked");

To uncheck the checkbox:

$("#checkboxid").removeAttr("checked");

The other answers hint at the solution and point you to documentation that after further digging will get you to this answer. Jukka K. Korpela has the reason this is the correct answer, basically I followed his link and then looked up the jQuery docs to get to that result. Just figured I'd save future people who find this article those extra steps.

Yeah, no checkbox for you in iOS (-:

Here, this is what I did to create a checkbox:

UIButton *checkbox;
BOOL checkBoxSelected;
checkbox = [[UIButton alloc] initWithFrame:CGRectMake(x,y,20,20)];
// 20x20 is the size of the checkbox that you want
// create 2 images sizes 20x20 , one empty square and
// another of the same square with the checkmark in it
// Create 2 UIImages with these new images, then:

[checkbox setBackgroundImage:[UIImage imageNamed:@"notselectedcheckbox.png"]
                    forState:UIControlStateNormal];
[checkbox setBackgroundImage:[UIImage imageNamed:@"selectedcheckbox.png"]
                    forState:UIControlStateSelected];
[checkbox setBackgroundImage:[UIImage imageNamed:@"selectedcheckbox.png"]
                    forState:UIControlStateHighlighted];
checkbox.adjustsImageWhenHighlighted=YES;
[checkbox addTarget:(nullable id) action:(nonnull SEL) forControlEvents:(UIControlEvents)];
[self.view addSubview:checkbox];

Now in the target method do the following:

-(void)checkboxSelected:(id)sender
{
    checkBoxSelected = !checkBoxSelected; /* Toggle */
    [checkbox setSelected:checkBoxSelected];
}

That's it!

Your going to use the checkbox1.checked property in your if statement, this returns true or false depending on weather it is checked or not.

This is the shortest way I've found (needs jQuery1.6+)

HTML:

<input type="checkbox" id="checkAll"/>

JS:

$("#checkAll").change(function () {
    $("input:checkbox").prop('checked', $(this).prop("checked"));
});

I'm using .prop as .attr doesn't work for checkboxes in jQuery 1.6+ unless you've explicitly added a checked attribute to your input tag.

Example-

$("#checkAll").change(function () {_x000D_
    $("input:checkbox").prop('checked', $(this).prop("checked"));_x000D_
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>_x000D_
<form action="#">_x000D_
    <p><label><input type="checkbox" id="checkAll"/> Check all</label></p>_x000D_
    _x000D_
    <fieldset>_x000D_
        <legend>Loads of checkboxes</legend>_x000D_
        <p><label><input type="checkbox" /> Option 1</label></p>_x000D_
        <p><label><input type="checkbox" /> Option 2</label></p>_x000D_
        <p><label><input type="checkbox" /> Option 3</label></p>_x000D_
        <p><label><input type="checkbox" /> Option 4</label></p>_x000D_
    </fieldset>_x000D_
</form>

You could use HTML's indeterminate IDL attribute on input elements.

The above answer did not work for me -

The following worked

$('input[type=checkbox]').each(function() 
{ 
        this.checked = false; 
}); 

This makes sure all the checkboxes are unchecked.

Use:

$("#ans option:selected").val()

Here you have an example styling checkboxes and radios using Font Awesome 5 free[

  /*General style*/_x000D_
  .custom-checkbox label, .custom-radio label {_x000D_
    position: relative;_x000D_
    cursor: pointer;_x000D_
    color: #666;_x000D_
    font-size: 30px;_x000D_
  }_x000D_
 .custom-checkbox input[type="checkbox"] ,.custom-radio input[type="radio"] {_x000D_
    position: absolute;_x000D_
    right: 9000px;_x000D_
  }_x000D_
   /*Custom checkboxes style*/_x000D_
  .custom-checkbox input[type="checkbox"]+.label-text:before {_x000D_
    content: "\f0c8";_x000D_
    font-family: "Font Awesome 5 Pro";_x000D_
    speak: none;_x000D_
    font-style: normal;_x000D_
    font-weight: normal;_x000D_
    font-variant: normal;_x000D_
    text-transform: none;_x000D_
    line-height: 1;_x000D_
    -webkit-font-smoothing: antialiased;_x000D_
    width: 1em;_x000D_
    display: inline-block;_x000D_
    margin-right: 5px;_x000D_
  }_x000D_
  .custom-checkbox input[type="checkbox"]:checked+.label-text:before {_x000D_
    content: "\f14a";_x000D_
    color: #2980b9;_x000D_
    animation: effect 250ms ease-in;_x000D_
  }_x000D_
  .custom-checkbox input[type="checkbox"]:disabled+.label-text {_x000D_
    color: #aaa;_x000D_
  }_x000D_
  .custom-checkbox input[type="checkbox"]:disabled+.label-text:before {_x000D_
    content: "\f0c8";_x000D_
    color: #ccc;_x000D_
  }_x000D_
_x000D_
   /*Custom checkboxes style*/_x000D_
  .custom-radio input[type="radio"]+.label-text:before {_x000D_
    content: "\f111";_x000D_
    font-family: "Font Awesome 5 Pro";_x000D_
    speak: none;_x000D_
    font-style: normal;_x000D_
    font-weight: normal;_x000D_
    font-variant: normal;_x000D_
    text-transform: none;_x000D_
    line-height: 1;_x000D_
    -webkit-font-smoothing: antialiased;_x000D_
    width: 1em;_x000D_
    display: inline-block;_x000D_
    margin-right: 5px;_x000D_
  }_x000D_
_x000D_
  .custom-radio input[type="radio"]:checked+.label-text:before {_x000D_
    content: "\f192";_x000D_
    color: #8e44ad;_x000D_
    animation: effect 250ms ease-in;_x000D_
  }_x000D_
_x000D_
  .custom-radio input[type="radio"]:disabled+.label-text {_x000D_
    color: #aaa;_x000D_
  }_x000D_
_x000D_
  .custom-radio input[type="radio"]:disabled+.label-text:before {_x000D_
    content: "\f111";_x000D_
    color: #ccc;_x000D_
  }_x000D_
_x000D_
  @keyframes effect {_x000D_
    0% {_x000D_
      transform: scale(0);_x000D_
    }_x000D_
    25% {_x000D_
      transform: scale(1.3);_x000D_
    }_x000D_
    75% {_x000D_
      transform: scale(1.4);_x000D_
    }_x000D_
    100% {_x000D_
      transform: scale(1);_x000D_
    }_x000D_
  }

<script src="https://kit.fontawesome.com/2a10ab39d6.js"></script>_x000D_
<div class="col-md-4">_x000D_
  <form>_x000D_
    <h2>1. Customs Checkboxes</h2>_x000D_
    <div class="custom-checkbox">_x000D_
      <div class="form-check">_x000D_
        <label>_x000D_
                    <input type="checkbox" name="check" checked> <span class="label-text">Option 01</span>_x000D_
                </label>_x000D_
      </div>_x000D_
      <div class="form-check">_x000D_
        <label>_x000D_
                    <input type="checkbox" name="check"> <span class="label-text">Option 02</span>_x000D_
                </label>_x000D_
      </div>_x000D_
      <div class="form-check">_x000D_
        <label>_x000D_
                    <input type="checkbox" name="check"> <span class="label-text">Option 03</span>_x000D_
                </label>_x000D_
      </div>_x000D_
      <div class="form-check">_x000D_
        <label>_x000D_
                    <input type="checkbox" name="check" disabled> <span class="label-text">Option 04</span>_x000D_
                </label>_x000D_
      </div>_x000D_
    </div>_x000D_
  </form>_x000D_
</div>_x000D_
<div class="col-md-4">_x000D_
  <form>_x000D_
    <h2>2. Customs Radios</h2>_x000D_
    <div class="custom-radio">_x000D_
_x000D_
      <div class="form-check">_x000D_
        <label>_x000D_
                    <input type="radio" name="radio" checked> <span class="label-text">Option 01</span>_x000D_
                </label>_x000D_
      </div>_x000D_
      <div class="form-check">_x000D_
        <label>_x000D_
                    <input type="radio" name="radio"> <span class="label-text">Option 02</span>_x000D_
                </label>_x000D_
      </div>_x000D_
      <div class="form-check">_x000D_
        <label>_x000D_
                    <input type="radio" name="radio"> <span class="label-text">Option 03</span>_x000D_
                </label>_x000D_
      </div>_x000D_
      <div class="form-check">_x000D_
        <label>_x000D_
                    <input type="radio" name="radio" disabled> <span class="label-text">Option 04</span>_x000D_
                </label>_x000D_
      </div>_x000D_
    </div>_x000D_
  </form>_x000D_
</div>

I think it's too late to answer this question, but actually there is a way to achieve your goal. You just need to add the following line to your checkbox:

android:button="@null"
android:drawableRight="?android:attr/listChoiceIndicatorMultiple"

You can use your customized drawable for checkbox as well.

And for a radioButton:

android:button="@null"
android:drawableRight="@android:drawable/btn_radio"

And if you want to do it programmatically:

Define a layout and name it RightCheckBox and copy the following lines :

<?xml version="1.0" encoding="utf-8"?>
<CheckBox xmlns:android="http://schemas.android.com/apk/res/android"
    android:text="hello"
    android:layout_width="match_parent" 
    android:layout_height="match_parent"
    android:button="@null"
    android:drawableRight="?android:attr/listChoiceIndicatorMultiple"/>

and when you need to add it programmatically you just need to inflate it to a CheckBox and add it to the root view.

CheckBox cb = (CheckBox)((LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE)).inflate(R.layout.check_right_checkbox,null);
rootView.addView(cb);

<CheckBox
        android:paddingRight="12dip" />

Documentation on UISwitch says:

[mySwitch setOn:NO]; 

In Interface Builder, select your switch and in the Attributes inspector you'll find State which can be set to on or off.

Here was what I did, first set:

android:button="@null"

and also set

android:drawableLeft="@drawable/selector_you_defined_for_your_checkbox"

then in your Java code:

Drawable d = mCheckBox.getCompoundDrawables()[0];
d.setBounds(0, 0, width_you_prefer, height_you_prefer);
mCheckBox.setCompoundDrawables(d, null, null, null);

It works for me, and hopefully it will work for you!

var fav = [];
$.each($("input[name='name']:checked"), function(){            
    fav.push($(this).val());
});

It will give you the value separeted by commas

<?php

if(isset($_POST['nameCheckbox'])){
    $_SESSION['fr_nameCheckbox'] = true;
}

?>

<input type="checkbox" name="nameCheckbox" 

<?php 

if(isset($_SESSION['fr_nameCheckbox'])){
    echo 'checked'; 
    unset($_SESSION['fr_nameCheckbox']);
} 

?>

Agree with iLoveTux , applying too many things (many colors and backgrounds) nothing worked , but here's what started working, Apply these properties to its css:

-webkit-appearance: none;
  -moz-appearance: none;
  -o-appearance: none;
  appearance:none;

and then css styling started working on checkbox :)

See this Link

HTML

<div id="products"></div>

JS

var someone = {
"name":"Mahmoude Elghandour",
"price":"174 SR",
"desc":"WE Will BE WITH YOU"
 };
 var name = $("<div/>",{"text":someone.name,"class":"name"
});

var price = $("<div/>",{"text":someone.price,"class":"price"});
var desc = $("<div />", {   
"text": someone.desc,
"class": "desc"
});
$("#products").fadeIn(1500);
$("#products").append(name).append(price).append(desc);

**Custom checkbox with css**  (WebKit browser solution only Chrome, Safari, Mobile browsers)

    <input type="checkbox" id="cardAccptance" name="cardAccptance" value="Yes">
    <label for="cardAccptance" class="bold"> Save Card for Future Use</label>

    /* The checkbox-cu */

    .checkbox-cu {
        display: block;
        position: relative;
        padding-left: 35px;
        margin-bottom: 0;
        cursor: pointer;
        font-size: 16px;
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }


    /* Hide the browser's default checkbox-cu */

    .checkbox-cu input {
        position: absolute;
        opacity: 0;
        cursor: pointer;
        height: 0;
        width: 0;
    }


    /* Create a custom checkbox-cu */

    .checkmark {
        position: absolute;
        top: 4px;
        left: 0;
        height: 20px;
        width: 20px;
        background-color: #eee;
        border: 1px solid #999;
        border-radius: 0;
        box-shadow: none;
    }


    /* On mouse-over, add a grey background color */

    .checkbox-cu:hover input~.checkmark {
        background-color: #ccc;
    }


    /* When the checkbox-cu is checked, add a blue background */

    .checkbox-cu input:checked~.checkmark {
        background-color: transparent;
    }


    /* Create the checkmark/indicator (hidden when not checked) */

    .checkmark:after {
        content: "";
        position: absolute;
        display: none;
    }


    /* Show the checkmark when checked */

    .checkbox-cu input:checked~.checkmark:after {
        display: block;
    }


    /* Style the checkmark/indicator */

    .checkbox-cu .checkmark::after {
        left: 7px;
        top: 3px;
        width: 6px;
        height: 9px;
        border: solid #28a745;
        border-width: 0 2px 2px 0;
        -webkit-transform: rotate(45deg);
        -ms-transform: rotate(45deg);
        transform: rotate(45deg);
        z-index: 100;
    }

Use this below simple code: https://jsfiddle.net/Divyesh_Patel/v7a4h3kr/7/

<input type="checkbox" id="check">_x000D_
<a href="#" onclick="check()">click</a>_x000D_
<button onclick="check()">_x000D_
button_x000D_
</button>_x000D_
<script>_x000D_
 function check() {_x000D_
      if (document.getElementById('check').checked) {_x000D_
            alert("checked");_x000D_
        } else {_x000D_
            alert("You didn't check it! Let me check it for you.");_x000D_
        }_x000D_
       _x000D_
    }_x000D_
_x000D_
</script>

Im putting this in an answer because it's too long for a comment:

If you need the VM to be aware when the CheckBox is changed, you should really bind the CheckBox to the VM, and not a static value:

public class ViewModel
{
    private bool _caseSensitive;
    public bool CaseSensitive
    {
        get { return _caseSensitive; }
        set
        {
            _caseSensitive = value;
            NotifyPropertyChange(() => CaseSensitive);

            Settings.Default.bSearchCaseSensitive = value;
        }
    }
}

XAML:

<CheckBox Content="Case Sensitive" IsChecked="{Binding CaseSensitive}"/>

I think this should work .. :)

<input type="checkbox" name="Days[]" value="Daily">Daily<br>
<input type="checkbox" name="Days[]" value="Sunday">Sunday<br>

@sfjedi

I've created a class and assigned the css values to it.

.radioA{
   vertical-align: middle;
}

It is working and you can check it in the below link. http://jsfiddle.net/gNVsC/ Hope it was useful.

I see this question is old and has so many answers, but I'll give my penny anyway. My vote is for the javascript solution on the form's 'submit' event, as some has pointed out. No doubling the inputs (especially if you have long names and attributes with php code mixed with html), no server side bother (that would require to know all field names and to check them down one by one), just fetch all the unchecked items, assign them a 0 value (or whatever you need to indicate a 'not checked' status) and then change their attribute 'checked' to true

    $('form').submit(function(e){
    var b = $("input:checkbox:not(:checked)");
    $(b).each(function () {
        $(this).val(0); //Set whatever value you need for 'not checked'
        $(this).attr("checked", true);
    });
    return true;
});

this way you will have a $_POST array like this:

Array
(
            [field1] => 1
            [field2] => 0
)

It seems that in VBA macro code for an ActiveX checkbox control you use

If (ActiveSheet.OLEObjects("CheckBox1").Object.Value = True)

and for a Form checkbox control you use

If (ActiveSheet.Shapes("CheckBox1").OLEFormat.Object.Value = 1)

The chosen answer does work however I wanted to make a comment that having 'ngModel' on the html tag causes the checkbox checked to not be set to true.

This occurs when you are trying to do bind using the checked property. i.e.

<mat-checkbox [checked]='var' ngModel name='some_name'></mat-checkbox>

And then inside your app.component.ts file

var = true;

will not work.

TLDR: Remove ngModel if you are setting the checked through the [checked] property

    <mat-checkbox [checked]='var' name='some_name'></mat-checkbox>

Here's a one liner answer for this question

List<DataGridViewRow> list = DataGridView1.Rows.Cast<DataGridViewRow>().Where(k => Convert.ToBoolean(k.Cells[CheckBoxColumn1.Name].Value) == true).ToList();

If you are using Webdriver then the item you are looking for is Selected.

Often times in the render of the checkbox doesn't actually apply the attribute checked unless specified.

So what you would look for in Selenium Webdriver is this

isChecked = e.findElement(By.tagName("input")).Selected;

As there is no Selected in WebDriver Java API, the above code should be as follows:

isChecked = e.findElement(By.tagName("input")).isSelected();

The problem is how you've attached the listener:

<input type="checkbox" ...  onchange="doalert(this.id)">

Inline listeners are effectively wrapped in a function which is called with the element as this. That function then calls the doalert function, but doesn't set its this so it will default to the global object (window in a browser).

Since the window object doesn't have a checked property, this.checked always resolves to false.

If you want this within doalert to be the element, attach the listener using addEventListener:

window.onload = function() {
  var input = document.querySelector('#g01-01');
  if (input) {   
    input.addEventListener('change', doalert, false);
  }
}

Or if you wish to use an inline listener:

<input type="checkbox" ...  onchange="doalert.call(this, this.id)">

Make all the checkboxes required and add a change listener. If any one checkbox is ticked, remove required attribute from all the checkboxes. Below is a sample code.

<div class="form-group browsers">
    <label class="control-label col-md-4" for="optiontext">Select an option</label>
    <div class="col-md-6">
        <input type="checkbox" name="browser" value="Chrome" required/> Google Chrome<br>
        <input type="checkbox" name="browser" value="IE" required/> Internet Explorer<br>
        <input type="checkbox" name="browser" value="Mozilla" required/> Mozilla Firefox<br>
        <input type="checkbox" name="browser" value="Edge" required/> Microsoft Edge
    </div>
</div>

Change listener :

$(function(){
    var requiredCheckboxes = $('.browsers :checkbox[required]');
    requiredCheckboxes.change(function(){
        if(requiredCheckboxes.is(':checked')) {
            requiredCheckboxes.removeAttr('required');
        } else {
            requiredCheckboxes.attr('required', 'required');
        }
    });
});

<input type="checkbox" name="check_list[<? echo $row['Report ID'] ?>]" value="<? echo $row['Report ID'] ?>">

And after the post, you can loop through them:

   if(!empty($_POST['check_list'])){
     foreach($_POST['check_list'] as $report_id){
        echo "$report_id was checked! ";
     }
   }

Or get a certain value posted from previous page:

if(isset($_POST['check_list'][$report_id])){
  echo $report_id . " was checked!<br/>";
}

Tested in JSFiddle and does what you're asking for.This approach has the added benefit of firing when a label associated with a checkbox is clicked.

Updated Answer:

$(document).ready(function() {
    //set initial state.
    $('#textbox1').val(this.checked);

    $('#checkbox1').change(function() {
        if(this.checked) {
            var returnVal = confirm("Are you sure?");
            $(this).prop("checked", returnVal);
        }
        $('#textbox1').val(this.checked);        
    });
});

Original Answer:

$(document).ready(function() {
    //set initial state.
    $('#textbox1').val($(this).is(':checked'));

    $('#checkbox1').change(function() {
        if($(this).is(":checked")) {
            var returnVal = confirm("Are you sure?");
            $(this).attr("checked", returnVal);
        }
        $('#textbox1').val($(this).is(':checked'));        
    });
});

<input type="checkbox" onclick="this.checked=!this.checked;">

But you absolutely MUST validate the data on the server to ensure it hasn't been changed.

I always use pseudo elements :before and :after for changing the appearance of checkboxes and radio buttons. it's works like a charm.

Refer this link for more info

CODEPEN

Steps

1. Hide the default checkbox using css rules like visibility:hidden or opacity:0 or position:absolute;left:-9999px etc.
2. Create a fake checkbox using :before element and pass either an empty or a non-breaking space '\00a0';
3. When the checkbox is in :checked state, pass the unicode content: "\2713", which is a checkmark;
4. Add :focus style to make the checkbox accessible.
5. Done

Here is how I did it.

.box {_x000D_
  background: #666666;_x000D_
  color: #ffffff;_x000D_
  width: 250px;_x000D_
  padding: 10px;_x000D_
  margin: 1em auto;_x000D_
}_x000D_
p {_x000D_
  margin: 1.5em 0;_x000D_
  padding: 0;_x000D_
}_x000D_
input[type="checkbox"] {_x000D_
  visibility: hidden;_x000D_
}_x000D_
label {_x000D_
  cursor: pointer;_x000D_
}_x000D_
input[type="checkbox"] + label:before {_x000D_
  border: 1px solid #333;_x000D_
  content: "\00a0";_x000D_
  display: inline-block;_x000D_
  font: 16px/1em sans-serif;_x000D_
  height: 16px;_x000D_
  margin: 0 .25em 0 0;_x000D_
  padding: 0;_x000D_
  vertical-align: top;_x000D_
  width: 16px;_x000D_
}_x000D_
input[type="checkbox"]:checked + label:before {_x000D_
  background: #fff;_x000D_
  color: #333;_x000D_
  content: "\2713";_x000D_
  text-align: center;_x000D_
}_x000D_
input[type="checkbox"]:checked + label:after {_x000D_
  font-weight: bold;_x000D_
}_x000D_
_x000D_
input[type="checkbox"]:focus + label::before {_x000D_
    outline: rgb(59, 153, 252) auto 5px;_x000D_
}

<div class="content">_x000D_
  <div class="box">_x000D_
    <p>_x000D_
      <input type="checkbox" id="c1" name="cb">_x000D_
      <label for="c1">Option 01</label>_x000D_
    </p>_x000D_
    <p>_x000D_
      <input type="checkbox" id="c2" name="cb">_x000D_
      <label for="c2">Option 02</label>_x000D_
    </p>_x000D_
    <p>_x000D_
      <input type="checkbox" id="c3" name="cb">_x000D_
      <label for="c3">Option 03</label>_x000D_
    </p>_x000D_
  </div>_x000D_
</div>

Much more stylish using :before and :after

body{_x000D_
  font-family: sans-serif;  _x000D_
}_x000D_
_x000D_
.container {_x000D_
    margin-top: 50px;_x000D_
    margin-left: 20px;_x000D_
    margin-right: 20px;_x000D_
}_x000D_
.checkbox {_x000D_
    width: 100%;_x000D_
    margin: 15px auto;_x000D_
    position: relative;_x000D_
    display: block;_x000D_
}_x000D_
_x000D_
.checkbox input[type="checkbox"] {_x000D_
    width: auto;_x000D_
    opacity: 0.00000001;_x000D_
    position: absolute;_x000D_
    left: 0;_x000D_
    margin-left: -20px;_x000D_
}_x000D_
.checkbox label {_x000D_
    position: relative;_x000D_
}_x000D_
.checkbox label:before {_x000D_
    content: '';_x000D_
    position: absolute;_x000D_
    left: 0;_x000D_
    top: 0;_x000D_
    margin: 4px;_x000D_
    width: 22px;_x000D_
    height: 22px;_x000D_
    transition: transform 0.28s ease;_x000D_
    border-radius: 3px;_x000D_
    border: 2px solid #7bbe72;_x000D_
}_x000D_
.checkbox label:after {_x000D_
  content: '';_x000D_
    display: block;_x000D_
    width: 10px;_x000D_
    height: 5px;_x000D_
    border-bottom: 2px solid #7bbe72;_x000D_
    border-left: 2px solid #7bbe72;_x000D_
    -webkit-transform: rotate(-45deg) scale(0);_x000D_
    transform: rotate(-45deg) scale(0);_x000D_
    transition: transform ease 0.25s;_x000D_
    will-change: transform;_x000D_
    position: absolute;_x000D_
    top: 12px;_x000D_
    left: 10px;_x000D_
}_x000D_
.checkbox input[type="checkbox"]:checked ~ label::before {_x000D_
    color: #7bbe72;_x000D_
}_x000D_
_x000D_
.checkbox input[type="checkbox"]:checked ~ label::after {_x000D_
    -webkit-transform: rotate(-45deg) scale(1);_x000D_
    transform: rotate(-45deg) scale(1);_x000D_
}_x000D_
_x000D_
.checkbox label {_x000D_
    min-height: 34px;_x000D_
    display: block;_x000D_
    padding-left: 40px;_x000D_
    margin-bottom: 0;_x000D_
    font-weight: normal;_x000D_
    cursor: pointer;_x000D_
    vertical-align: sub;_x000D_
}_x000D_
.checkbox label span {_x000D_
    position: absolute;_x000D_
    top: 50%;_x000D_
    -webkit-transform: translateY(-50%);_x000D_
    transform: translateY(-50%);_x000D_
}_x000D_
.checkbox input[type="checkbox"]:focus + label::before {_x000D_
    outline: 0;_x000D_
}

<div class="container"> _x000D_
  <div class="checkbox">_x000D_
     <input type="checkbox" id="checkbox" name="" value="">_x000D_
     <label for="checkbox"><span>Checkbox</span></label>_x000D_
  </div>_x000D_
_x000D_
  <div class="checkbox">_x000D_
     <input type="checkbox" id="checkbox2" name="" value="">_x000D_
     <label for="checkbox2"><span>Checkbox</span></label>_x000D_
  </div>_x000D_
</div>

Try this CSS

input[type=checkbox] {width:100px; height:100px;}

try changing this part,

<input type="checkbox" name="newsletter[]" value="newsletter" checked>i want to sign up   for newsletter

for this

<input type="checkbox" name="newsletter" value="newsletter" checked>i want to sign up   for newsletter

Use Checked = true

$("#checkbox1").prop('checked', true);

Note: I am not clear whether you want to onclick/onchange event on checkbox. is(":checked", function(){}) is a wrong in the question.

You could just use the bound ng-model (answers[item.questID]) value itself in your ng-change method to detect if it has been checked or not.

Example:-

<input type="checkbox" ng-model="answers[item.questID]" 
     ng-change="stateChanged(item.questID)" /> <!-- Pass the specific id -->

and

$scope.stateChanged = function (qId) {
   if($scope.answers[qId]){ //If it is checked
       alert('test');
   }
}

Its not a perfect solution, but a good workaround.

You need to assign your elements to behave as table with display: table-cell

Solution: ^Demo

HTML:

<ul>        
    <li>
        <div><input type="checkbox" value="1" name="test[]" id="myid1"></div>
        <div><label for="myid1">label1</label></div>
    </li>
    <li>
        <div><input type="checkbox" value="2" name="test[]" id="myid2"></div>
        <div><label for="myid2">label2</label></div>
    </li>
</ul>

CSS:

li div { display: table-cell; vertical-align: middle; }

If checked:

$( "SELECTOR" ).attr( "checked" )  // Returns ‘true’ if present on the element, returns undefined if not present
$( "SELECTOR" ).prop( "checked" ) // Returns true if checked, false if unchecked.
$( "SELECTOR" ).is( ":checked" ) // Returns true if checked, false if unchecked.

Get the checked val:

$( "SELECTOR:checked" ).val()

Get the checked val numbers:

$( "SELECTOR:checked" ).length

Check or uncheck checkbox

$( "SELECTOR" ).prop( "disabled", false );
$( "SELECTOR" ).prop( "checked", true );

Best way is $('input[name="line"]:checked').val()

And also you can get selected text $('input[name="line"]:checked').text()

Add value attribute and name to your radio button inputs. Make sure all inputs have same name attribute.

<div class="col-8 m-radio-inline">
    <label class="m-radio m-radio-filter">
        <input type="radio" name="line" value="1" checked> Value Text 1
    </label>
    <label class="m-radio m-radio-filter">
        <input type="radio" name="line" value="2"> Value Text 2
    </label>
    <label class="m-radio m-radio-filter">
        <input type="radio" name="line" value="3"> Value Text 3
    </label>
</div>

Use JavaScript by adding an onChange attribute to your input tags

<input onChange="this.form.submit()" ... />

Checkboxes, by design, are meant to be toggled on or off. They are not dependent on other checkboxes, so you can turn as many on and off as you wish.

Radio buttons, however, are designed to only allow one element of a group to be selected at any time.

References:

Checkboxes: MDN Link

Radio Buttons: MDN Link

onChange will not call handleChange on mobile when using defaultChecked. As an alternative you can can use onClick and onTouchEnd.

<input onClick={this.handleChange} onTouchEnd={this.handleChange} type="checkbox" defaultChecked={!!this.state.complete} />;

Label without an onclick will behave as you would expect. It changes the input. What you relly want is to execute selectAll() when you click on a label, right? Then only add select all to the label onclick. Or wrap the input into the the label and assign onclick only for the label

<label for="check_all_1" onclick="selectAll(document.wizard_form, this);">
  <input type="checkbox" id="check_all_1" name="check_all_1" title="Select All">
  Select All
</label>

<CheckBox
      android:id="@+id/checkBox1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="Fees Paid Rs100:"
      android:textColor="#276ca4"
      android:checked="false"
      android:onClick="checkbox_clicked" />

Main Activity from here

   public class RegistA extends Activity {
CheckBox fee_checkbox;
 @Override
    protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_regist);
 fee_checkbox = (CheckBox)findViewById(R.id.checkBox1);// Fee Payment Check box
}

checkbox clicked

     public void checkbox_clicked(View v)
     {

         if(fee_checkbox.isChecked())
         {
            // true,do the task 

         }
         else
         {

         }

     }

This may be achieved by using AppCompatCheckBox. You can use app:buttonCompat="@drawable/selector_drawable" to change the selector.

It's working with PNGs, but I didn't find a way for it to work with Vector Drawables.

Prevent user from deselecting last checked checkbox.
jQuery (original answer).

$('input[type="checkbox"][name="chkBx"]').on('change',function(){
    var getArrVal = $('input[type="checkbox"][name="chkBx"]:checked').map(function(){
        return this.value;
    }).toArray();

    if(getArrVal.length){
        //execute the code
        $('#msg').html(getArrVal.toString());

    } else {
        $(this).prop("checked",true);
        $('#msg').html("At least one value must be checked!");
        return false;

    }
});

UPDATED ANSWER 2019-05-31
Plain JS

let i,_x000D_
    el = document.querySelectorAll('input[type="checkbox"][name="chkBx"]'),_x000D_
    msg = document.getElementById('msg'),_x000D_
    onChange = function(ev){_x000D_
        ev.preventDefault();_x000D_
        let _this = this,_x000D_
            arrVal = Array.prototype.slice.call(_x000D_
                document.querySelectorAll('input[type="checkbox"][name="chkBx"]:checked'))_x000D_
                    .map(function(cur){return cur.value});_x000D_
_x000D_
        if(arrVal.length){_x000D_
            msg.innerHTML = JSON.stringify(arrVal);_x000D_
        } else {_x000D_
            _this.checked=true;_x000D_
            msg.innerHTML = "At least one value must be checked!";_x000D_
        }_x000D_
    };_x000D_
_x000D_
for(i=el.length;i--;){el[i].addEventListener('change',onChange,false);}

<label><input type="checkbox" name="chkBx" value="value1" checked> Value1</label>_x000D_
<label><input type="checkbox" name="chkBx" value="value2"> Value2</label>_x000D_
<label><input type="checkbox" name="chkBx" value="value3"> Value3</label>_x000D_
<div id="msg"></div>

I'm not sure anyone hasn't answered in this way (using jQuery):

  $( '#container .toggle-button' ).click( function () {
    $( '#container input[type="checkbox"]' ).prop('checked', this.checked)
  })

It's clean, has no loops or if/else clauses and works as a charm.

Check this code:

<!-- script to check whether checkbox checked or not using prop function -->
<script>
$('#change_password').click(function(){
    if($(this).prop("checked") == true){ //can also use $(this).prop("checked") which will return a boolean.
        alert("checked");
    }
    else if($(this).prop("checked") == false){
        alert("Checkbox is unchecked.");
    }
});
</script>

The short answer:

Use the click event, which won't fire until after the value has been updated, and fires when you want it to:

<label><input type='checkbox' onclick='handleClick(this);'>Checkbox</label>

function handleClick(cb) {
  display("Clicked, new value = " + cb.checked);
}

Live example | Source

The longer answer:

The change event handler isn't called until the checked state has been updated (live example | source), but because (as Tim Büthe points out in the comments) IE doesn't fire the change event until the checkbox loses focus, you don't get the notification proactively. Worse, with IE if you click a label for the checkbox (rather than the checkbox itself) to update it, you can get the impression that you're getting the old value (try it with IE here by clicking the label: live example | source). This is because if the checkbox has focus, clicking the label takes the focus away from it, firing the change event with the old value, and then the click happens setting the new value and setting focus back on the checkbox. Very confusing.

But you can avoid all of that unpleasantness if you use click instead.

I've used DOM0 handlers (onxyz attributes) because that's what you asked about, but for the record, I would generally recommend hooking up handlers in code (DOM2's addEventListener, or attachEvent in older versions of IE) rather than using onxyz attributes. That lets you attach multiple handlers to the same element and lets you avoid making all of your handlers global functions.

An earlier version of this answer used this code for handleClick:

function handleClick(cb) {
  setTimeout(function() {
    display("Clicked, new value = " + cb.checked);
  }, 0);
}

The goal seemed to be to allow the click to complete before looking at the value. As far as I'm aware, there's no reason to do that, and I have no idea why I did. The value is changed before the click handler is called. In fact, the spec is quite clear about that. The version without setTimeout works perfectly well in every browser I've tried (even IE6). I can only assume I was thinking about some other platform where the change isn't done until after the event. In any case, no reason to do that with HTML checkboxes.

I'm working with Angular5 and I had to add the "name" attribute to get the binding to work... The "id" is not required for binding.

<input type="checkbox" id="rememberMe" name="rememberMe" [(ngModel)]="rememberMe">

 public ActionResult Save(Director director)
        {
          // IsActive my model property same name give in cshtml
//IsActive <input type="checkbox" id="IsActive" checked="checked" value="true" name="IsActive" 
            if(ModelState.IsValid)
            {
                DirectorVM ODirectorVM = new DirectorVM();
                ODirectorVM.SaveData(director);
                return RedirectToAction("Display");
            }
            return RedirectToAction("Add");
        }

That is very weird. I checked the CheckBox documentation page which reads

<asp:CheckBox id="CheckBox1" 
     AutoPostBack="True|False"
     Text="Label"
     TextAlign="Right|Left"
     Checked="True|False"
     OnCheckedChanged="OnCheckedChangedMethod"
     runat="server"/>

As you can see, there is no OnClick or OnClientClick attributes defined.

Keeping this in mind, I think this is what is happening.

When you do this,

<asp:CheckBox runat="server" OnClick="alert(this.checked);" />

ASP.NET doesn't modify the OnClick attribute and renders it as is on the browser. It would be rendered as:

  <input type="checkbox" OnClick="alert(this.checked);" />

Obviously, a browser can understand 'OnClick' and puts an alert.

And in this scenario

<asp:CheckBox runat="server" OnClientClick="alert(this.checked);" />

Again, ASP.NET won't change the OnClientClick attribute and will render it as

<input type="checkbox" OnClientClick="alert(this.checked);" />

As browser won't understand OnClientClick nothing will happen. It also won't raise any error as it is just another attribute.

You can confirm above by looking at the rendered HTML.

And yes, this is not intuitive at all.

You can use Id of the field as well

$('#checkbox1').change(function() {
   if($(this).is(":checked")) {
      //'checked' event code
      return;
   }
   //'unchecked' event code
});

From HTML 4 spec, which should be consistent across almost all browsers:

http://www.w3.org/TR/html401/interact/forms.html#checkbox

Checkboxes (and radio buttons) are on/off switches that may be toggled by the user. A switch is "on" when the control element's checked attribute is set. When a form is submitted, only "on" checkbox controls can become successful.

Successful is defined as follows:

A successful control is "valid" for submission. Every successful control has its control name paired with its current value as part of the submitted form data set. A successful control must be defined within a FORM element and must have a control name.

try

totalCost.value = checkbox.checked ? 10 : calculate();

function change(checkbox) {_x000D_
  totalCost.value = checkbox.checked ? 10 : calculate();_x000D_
}_x000D_
_x000D_
function calculate() {_x000D_
  return other.value*2;_x000D_
}

input { display: block}

Checkbox: <input type="checkbox" onclick="change(this)"/>_x000D_
Total cost: <input id="totalCost" type="number" value=5 />_x000D_
Other: <input id="other" type="number" value=7 />

Example With AngularJs

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>_x000D_
<!DOCTYPE html>_x000D_
<html>_x000D_
_x000D_
<head>_x000D_
  <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>_x000D_
  <script>_x000D_
    angular.module('app', []).controller('appc', ['$scope',_x000D_
      function($scope) {_x000D_
        $scope.selected = 'other';_x000D_
      }_x000D_
    ]);_x000D_
  </script>_x000D_
</head>_x000D_
_x000D_
<body ng-app="app" ng-controller="appc">_x000D_
  <label>SELECTED: {{selected}}</label>_x000D_
  <div>_x000D_
    <input type="checkbox" ng-checked="selected=='male'" ng-true-value="'male'" ng-model="selected">Male_x000D_
    <br>_x000D_
    <input type="checkbox" ng-checked="selected=='female'" ng-true-value="'female'" ng-model="selected">Female_x000D_
    <br>_x000D_
    <input type="checkbox" ng-checked="selected=='other'" ng-true-value="'other'" ng-model="selected">Other_x000D_
  </div>_x000D_
_x000D_
_x000D_
_x000D_
</body>_x000D_
_x000D_
</html>

  $("#checkbox").change(function(e) {

  if ($(this).prop('checked')){
    console.log('checked');
  }
});

You don't really need the directive, can achieve it by using the ng-init and ng-checked. below demo link shows how to set the initial value for checkbox in angularjs.

demo link:

<form>
    <div>
      Released<input type="checkbox" ng-model="Released" ng-bind-html="ACR.Released" ng-true-value="true" ng-false-value="false" ng-init='Released=true' ng-checked='true' /> 
      Inactivated<input type="checkbox" ng-model="Inactivated" ng-bind-html="Inactivated" ng-true-value="true" ng-false-value="false" ng-init='Inactivated=false' ng-checked='false' /> 
      Title Changed<input type="checkbox" ng-model="Title" ng-bind-html="Title" ng-true-value="true" ng-false-value="false" ng-init='Title=false' ng-checked='false' />
    </div>
    <br/>
    <div>Released value is  <b>{{Released}}</b></div>
    <br/>
    <div>Inactivated  value is  <b>{{Inactivated}}</b></div>
    <br/>
    <div>Title  value is  <b>{{Title}}</b></div>
    <br/>
  </form>

// Code goes here

  var app = angular.module("myApp", []);
        app.controller("myCtrl", function ($scope) {

         });    

In your form tag, rather than

name="booking.php"

use

action="booking.php"

And then, in booking.php use

$checkValue = $_POST['booking-check'];

Also, you'll need a submit button in there

<input type='submit'>

var checkedString = $('input:checkbox:checked.name').map(function() { return this.value; }).get().join();

The line where you define lfckv is run whenever the browser finds it. When you put it into the head of your document, the browser tries to find lifecheck id before the lifecheck element is created. You must add your script below the lifecheck input in order for your code to work.

Looking at their docs, they have a $.uniform.update feature to refresh a "uniformed" element.

Example: http://jsfiddle.net/r87NH/4/

$("input:checkbox").uniform();

$("body").on("click", "#check1", function () {
    var two = $("#check2").attr("checked", this.checked);
    $.uniform.update(two);
});

Yes it's pretty work with jquery.serialize()

HTML

<form id="myform" class="myform" method="post" name="myform">
<textarea id="myField" type="text" name="myField"></textarea>
<input type="checkbox" name="myCheckboxes[]" id="myCheckboxes" value="someValue1" />
<input type="checkbox" name="myCheckboxes[]" id="myCheckboxes" value="someValue2" />
<input id="submit" type="submit" name="submit" value="Submit" onclick="return submitForm()" />
</form>
 <div id="myResponse"></div>

JQuery

function submitForm() {
var form = document.myform;

var dataString = $(form).serialize();


$.ajax({
    type:'POST',
    url:'myurl.php',
    data: dataString,
    success: function(data){
        $('#myResponse').html(data);


    }
});
return false;
}

NOW THE PHP, i export the POST data

 echo var_export($_POST);

You can see the all the checkbox value are sent.I hope it may help you

This should help you: W3Schools - Labels

<form>
  <label for="male">Male</label>
  <input type="radio" name="sex" id="male" />
  <br />
  <label for="female">Female</label>
  <input type="radio" name="sex" id="female" />
</form>

If self could be nil in the closure use [weak self].

If self will never be nil in the closure use [unowned self].

The Apple Swift documentation has a great section with images explaining the difference between using strong, weak, and unowned in closures:

https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/AutomaticReferenceCounting.html

You see the same symptoms if you are working in Xamarin Studio and you are referencing a portable library for which you need to do the PCL bait and switch trick for. This occurs if the referencing project is out of date with respect to the referenced library. I found that I had updated my common library to a newer framework, updated my packages but hadn't updated my iOS packages to match. Updating the packages solved this error for me.

For a horizontal progress bar, you first need to define your progress bar and link it with your XML file like this, in the onCreate:

final TextView txtview = (TextView)findViewById(R.id.tV1);
final ProgressBar pbar = (ProgressBar) findViewById(R.id.pB1);

Then, you may use onProgressChanged Method in your WebChromeClient:

MyView.setWebChromeClient(new WebChromeClient() {
            public void onProgressChanged(WebView view, int progress) {
               if(progress < 100 && pbar.getVisibility() == ProgressBar.GONE){
                   pbar.setVisibility(ProgressBar.VISIBLE);
                   txtview.setVisibility(View.VISIBLE);
               }

               pbar.setProgress(progress);
               if(progress == 100) {
                   pbar.setVisibility(ProgressBar.GONE);
                   txtview.setVisibility(View.GONE);
               }
            }
        });

After that, in your layout you have something like this

<TextView android:text="Loading, . . ." 
    android:textAppearance="?android:attr/textAppearanceSmall"
    android:id="@+id/tV1" android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:textColor="#000000"></TextView>

<ProgressBar android:id="@+id/pB1"
    style="?android:attr/progressBarStyleHorizontal" android:layout_width="fill_parent"
    android:layout_height="wrap_content" android:layout_centerVertical="true"
    android:padding="2dip">
</ProgressBar>

This is how I did it in my app.

This will print 76.66:

print("Number: ", f"{76.663254: .2f}")

If you are using Bootstrap 4, which is the latest version as writing this answer, the assingments have changed a bit. Here is an example of a navbar fixed on top:

<nav class="navbar fixed-top navbar-light bg-light">
    <a class="navbar-brand" href="#"><h1>Navbar</h1></a>
</nav>

C# / Xamarin:

segment.SetTitleTextAttributes(new UITextAttributes { 
    Font = UIFont.SystemFontOfSize(font_size) }, UIControlState.Normal);

I found another way to work around this issue that I thought I would share.

In my case I had a years worth of daily columns (i.e. Jan-1, Jan-2... Dec-31), and I had to extract totals for each month. I went about it this way: Sum the entire year, Subtract out the totals for the dates prior and the dates after. It looks like this for February's totals:

=SUM($P3:$NP3)-(SUMIF($P$2:$NP$2, ">2/28/2014",$P3:$NP3)+SUMIF($P$2:$NP$2, "<2/1/2014",$P3:$NP3))

Where $P$2:$NP$2 contained my date values and $P3:$NP3 was the first row of data I am totaling. So SUM($P3:$NP3) is my entire year's total and I subtract (the sum of two sumifs):

SUMIF($P$2:$NP$2, ">2/28/2014",$P3:$NP3), which totals all the months after February and SUMIF($P$2:$NP$2, "<2/1/2014",$P3:$NP3), which totals all the months before February.

Well, you're on the right path, Benno!

There are some tips regarding VBA programming that might help you out.

1. Use always explicit references to the sheet you want to interact with. Otherwise, Excel may 'assume' your code applies to the active sheet and eventually you'll see it screws your spreadsheet up.

2. As lionz mentioned, get in touch with the native methods Excel offers. You might use them on most of your tricks.

3. Explicitly declare your variables... they'll show the list of methods each object offers in VBA. It might save your time digging on the internet.

Now, let's have a draft code...

Remember this code must be within the Excel Sheet object, as explained by lionz. It only applies to Sheet 2, is up to you to adapt it to both Sheet 2 and Sheet 3 in the way you prefer.

Hope it helps!

Private Sub Worksheet_Change(ByVal Target As Range)

    Dim oSheet As Excel.Worksheet

    'We only want to do something if the changed cell is B6, right?
    If Target.Address = "$B$6" Then

        'Checks if it's a number...
        If IsNumeric(Target.Value) Then

            'Let's avoid values out of your bonds, correct?
            If Target.Value > 0 And Target.Value < 51 Then

                'Let's assign the worksheet we'll show / hide rows to one variable and then
                '   use only the reference to the variable itself instead of the sheet name.
                '   It's safer.

                'You can alternatively replace 'sheet 2' by 2 (without quotes) which will represent
                '   the sheet index within the workbook
                Set oSheet = ActiveWorkbook.Sheets("Sheet 2")

                'We'll unhide before hide, to ensure we hide the correct ones
                oSheet.Range("A7:A56").EntireRow.Hidden = False

                oSheet.Range("A" & Target.Value + 7 & ":A56").EntireRow.Hidden = True

            End If

        End If

    End If

End Sub

Enums cannot be derrived from other enums, but only from int, uint, short, ushort, long, ulong, byte and sbyte.

Like Pascal said, you can use other enum's values or constants to initialize an enum value, but that's about it.

String one, two, three;
one = two = three = "";

This should work with immutable objects. It doesn't make any sense for mutable objects for example:

Person firstPerson, secondPerson, thirdPerson;
firstPerson = secondPerson = thirdPerson = new Person();

All the variables would be pointing to the same instance. Probably what you would need in that case is:

Person firstPerson = new Person();
Person secondPerson = new Person();
Person thirdPerson = new Person();

Or better yet use an array or a Collection.

If you are using windows, the PyQt4 folder is not in the path by default, you have to go to it before trying to run it:

c:\Python27\Lib\site-packages\PyQt4\something> pyuic4.exe full/path/to/input.ui -o full/path/to/output.py

or call it using its full path

full/path/to/my/files> c:\Python27\Lib\site-packages\PyQt4\something\pyuic4.exe input.ui -o output.py

contentType option to false is used for multipart/form-data forms that pass files.

When one sets the contentType option to false, it forces jQuery not to add a Content-Type header, otherwise, the boundary string will be missing from it. Also, when submitting files via multipart/form-data, one must leave the processData flag set to false, otherwise, jQuery will try to convert your FormData into a string, which will fail.

Use jQuery's .serialize() method which creates a text string in standard URL-encoded notation.

You need to pass un-encoded data when using contentType: false.

Try using new FormData instead of .serialize():

  var formData = new FormData($(this)[0]);

See for yourself the difference of how your formData is passed to your php page by using console.log().

  var formData = new FormData($(this)[0]);
  console.log(formData);

  var formDataSerialized = $(this).serialize();
  console.log(formDataSerialized);

Direct answer to title question:

Integers are unlimited in size and have no maximum value in Python.

Answer which addresses stated underlying use case:

According to your comment of what you're trying to do, you are currently thinking something along the lines of

minval = MAXINT;
for (i = 1; i < num_elems; i++)
    if a[i] < a[i-1]
        minval = a[i];

That's not how to think in Python. A better translation to Python (but still not the best) would be

minval = a[0]  # Just use the first value
for i in range(1, len(a)):
    minval = min(a[i], a[i - 1])

Note that the above doesn't use MAXINT at all. That part of the solution applies to any programming language: You don't need to know the highest possible value just to find the smallest value in a collection.

But anyway, what you really do in Python is just

minval = min(a)

That is, you don't write a loop at all. The built-in min() function gets the minimum of the whole collection.

Modernizr doesn't detect browsers as such, it detects which feature and capability are present and this is the whole jist of what it's trying to do.

You could try hooking in a simple detection script like this and then using it to make your choice. I've included Version Detection as well just in case that's needed. If you only want to check of any version of IE you could just look for the navigator.userAgent having a value of "MSIE".

var BrowserDetect = {_x000D_
        init: function () {_x000D_
            this.browser = this.searchString(this.dataBrowser) || "Other";_x000D_
            this.version = this.searchVersion(navigator.userAgent) || this.searchVersion(navigator.appVersion) || "Unknown";_x000D_
        },_x000D_
        searchString: function (data) {_x000D_
            for (var i = 0; i < data.length; i++) {_x000D_
                var dataString = data[i].string;_x000D_
                this.versionSearchString = data[i].subString;_x000D_
_x000D_
                if (dataString.indexOf(data[i].subString) !== -1) {_x000D_
                    return data[i].identity;_x000D_
                }_x000D_
            }_x000D_
        },_x000D_
        searchVersion: function (dataString) {_x000D_
            var index = dataString.indexOf(this.versionSearchString);_x000D_
            if (index === -1) {_x000D_
                return;_x000D_
            }_x000D_
_x000D_
            var rv = dataString.indexOf("rv:");_x000D_
            if (this.versionSearchString === "Trident" && rv !== -1) {_x000D_
                return parseFloat(dataString.substring(rv + 3));_x000D_
            } else {_x000D_
                return parseFloat(dataString.substring(index + this.versionSearchString.length + 1));_x000D_
            }_x000D_
        },_x000D_
_x000D_
        dataBrowser: [_x000D_
            {string: navigator.userAgent, subString: "Edge", identity: "MS Edge"},_x000D_
            {string: navigator.userAgent, subString: "MSIE", identity: "Explorer"},_x000D_
            {string: navigator.userAgent, subString: "Trident", identity: "Explorer"},_x000D_
            {string: navigator.userAgent, subString: "Firefox", identity: "Firefox"},_x000D_
            {string: navigator.userAgent, subString: "Opera", identity: "Opera"},  _x000D_
            {string: navigator.userAgent, subString: "OPR", identity: "Opera"},  _x000D_
_x000D_
            {string: navigator.userAgent, subString: "Chrome", identity: "Chrome"}, _x000D_
            {string: navigator.userAgent, subString: "Safari", identity: "Safari"}       _x000D_
        ]_x000D_
    };_x000D_
    _x000D_
    BrowserDetect.init();_x000D_
    document.write("You are using <b>" + BrowserDetect.browser + "</b> with version <b>" + BrowserDetect.version + "</b>");

You can then simply check for:

BrowserDetect.browser == 'Explorer';
BrowserDetect.version <= 9;

If you're set on using Java Dates rather than, say, JodaTime, use a java.text.DateFormat to convert the string to a Date, then compare the two using .equals:

I almost forgot: You need to zero out the hours, minutes, seconds, and milliseconds on the current date before comparing them. I used a Calendar object below to do it.

import java.text.DateFormat;
import java.util.Calendar;
import java.util.Date;

// Other code here
    String toDate;
    //toDate = "05/11/2010";

    // Value assigned to toDate somewhere in here

    DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
    Calendar currDtCal = Calendar.getInstance();

    // Zero out the hour, minute, second, and millisecond
    currDtCal.set(Calendar.HOUR_OF_DAY, 0);
    currDtCal.set(Calendar.MINUTE, 0);
    currDtCal.set(Calendar.SECOND, 0);
    currDtCal.set(Calendar.MILLISECOND, 0);

    Date currDt = currDtCal.getTime();

    Date toDt;
    try {
        toDt = df.parse(toDate);
    } catch (ParseException e) {
        toDt = null;
        // Print some error message back to the user
    }

    if (currDt.equals(toDt)) {
        // They're the same date
    }

OK the main difference between class methods and static methods is:

• class method has its own identity, that's why they have to be called from within an INSTANCE.
• on the other hand static method can be shared between multiple instances so that it must be called from within THE CLASS

% gives better performance than format from my test.

Test code:

Python 2.7.2:

import timeit
print 'format:', timeit.timeit("'{}{}{}'.format(1, 1.23, 'hello')")
print '%:', timeit.timeit("'%s%s%s' % (1, 1.23, 'hello')")

Result:

> format: 0.470329046249
> %: 0.357107877731

Python 3.5.2

import timeit
print('format:', timeit.timeit("'{}{}{}'.format(1, 1.23, 'hello')"))
print('%:', timeit.timeit("'%s%s%s' % (1, 1.23, 'hello')"))

Result

> format: 0.5864730989560485
> %: 0.013593495357781649

It looks in Python2, the difference is small whereas in Python3, % is much faster than format.

Thanks @Chris Cogdon for the sample code.

Edit 1:

Tested again in Python 3.7.2 in July 2019.

Result:

> format: 0.86600608
> %: 0.630180146

There is not much difference. I guess Python is improving gradually.

Edit 2:

After someone mentioned python 3's f-string in comment, I did a test for the following code under python 3.7.2 :

import timeit
print('format:', timeit.timeit("'{}{}{}'.format(1, 1.23, 'hello')"))
print('%:', timeit.timeit("'%s%s%s' % (1, 1.23, 'hello')"))
print('f-string:', timeit.timeit("f'{1}{1.23}{\"hello\"}'"))

Result:

format: 0.8331376779999999
%: 0.6314778750000001
f-string: 0.766649943

It seems f-string is still slower than % but better than format.

Unfortunately, it is not possible to "get" the height of an element via CSS because CSS is not a language that returns any sort of data other than rules for the browser to adjust its styling.

Your resolution can be achieved with jQuery, or alternatively, you can fake it with CSS3's transform:translateY(); rule.

The CSS Route

If we assume that your target div in this instance is 200px high - this would mean that you want the div to have a margin of 190px?

This can be achieved by using the following CSS:

.dynamic-height {
    -webkit-transform: translateY(100%); //if your div is 200px, this will move it down by 200px, if it is 100px it will down by 100px etc
    transform: translateY(100%);         //if your div is 200px, this will move it down by 200px, if it is 100px it will down by 100px etc
    margin-top: -10px;
}

In this instance, it is important to remember that translateY(100%) will move the element in question downwards by a total of it's own length.

The problem with this route is that it will not push element below it out of the way, where a margin would.

The jQuery Route

If faking it isn't going to work for you, then your next best bet would be to implement a jQuery script to add the correct CSS for you.

jQuery(document).ready(function($){ //wait for the document to load
    $('.dynamic-height').each(function(){ //loop through each element with the .dynamic-height class
        $(this).css({
            'margin-top' : $(this).outerHeight() - 10 + 'px' //adjust the css rule for margin-top to equal the element height - 10px and add the measurement unit "px" for valid CSS
        });
    });
});

public class GetUsers extends AsyncTask {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();

    }

    private String convertStreamToString(InputStream is) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String line = null;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        return sb.toString();
    }

    public String connect()
    {
        HttpClient httpclient = new DefaultHttpClient();

        // Prepare a request object
        HttpPost htopost = new HttpPost("URL");
        htopost.setHeader(new BasicHeader("Authorization","Basic Og=="));

        try {

            JSONObject param = new JSONObject();
            param.put("PageSize",100);
            param.put("Userid",userId);
            param.put("CurrentPage",1);

            htopost.setEntity(new StringEntity(param.toString()));

            // Execute the request
            HttpResponse response;

            response = httpclient.execute(htopost);
            // Examine the response status
            // Get hold of the response entity
            HttpEntity entity = response.getEntity();

            if (entity != null) {

                // A Simple JSON Response Read
                InputStream instream = entity.getContent();
                String result = convertStreamToString(instream);

                // A Simple JSONObject Creation
                json = new JSONArray(result);

                // Closing the input stream will trigger connection release
                instream.close();
                return ""+response.getStatusLine().getStatusCode();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return null;
    }

    @Override
    protected String doInBackground(String... urls) {
        return connect();
    }

    @Override
    protected void onPostExecute(String status){
        try {

            if(status.equals("200"))
            {

                    Global.defaultMoemntLsit.clear();

                    for (int i = 0; i < json.length(); i++) {
                        JSONObject ojb = json.getJSONObject(i);
                        UserMomentModel u = new UserMomentModel();
                        u.setId(ojb.getString("Name"));
                        u.setUserId(ojb.getString("ID"));


                        Global.defaultMoemntLsit.add(u);
                    }




                            userAdapter = new UserAdapter(getActivity(), Global.defaultMoemntLsit);
                            recycleView.setAdapter(userMomentAdapter);
                            recycleView.setLayoutManager(mLayoutManager);
           }



        }
        catch (Exception e)
        {
            e.printStackTrace();

        }
    }
}

The problem with your query is that in CASE expressions, the THEN and ELSE parts have to have an expression that evaluates to a number or a varchar or any other datatype but not to a boolean value.

You just need to use boolean logic (or rather the ternary logic that SQL uses) and rewrite it:

WHERE 
    DateDropped = 0
AND ( @JobsOnHold = 1 AND DateAppr >= 0 
   OR (@JobsOnHold <> 1 OR @JobsOnHold IS NULL) AND DateAppr <> 0
    )

As for now Eclipse Neon service release is available. So if someone is still encounters this trouble, just go to

Help ? Check for Updates

and install provided updates.

PHP Manual said :

w Numeric representation of the day of the week

You can therefore construct a date with mktime, and use in it date("w", $yourTime);

Here's a creative idea using box-shadow:

#header {
    background-image: url("apple.jpg");
    box-shadow: inset 0 0 99999px rgba(0, 120, 255, 0.5);
}

What's happening

1. The background sets the background for your element.

2. The box-shadow is the important bit. It basically sets a really big shadow on the inside of the element, on top of the background, that is semi-transparent

SQL Server Express doesn't include SQL Server Agent, so it's not possible to just create SQL Agent jobs.

What you can do is:
You can create jobs "manually" by creating batch files and SQL script files, and running them via Windows Task Scheduler.
For example, you can backup your database with two files like this:

backup.bat:

sqlcmd -i backup.sql

backup.sql:

backup database TeamCity to disk = 'c:\backups\MyBackup.bak'

Just put both files into the same folder and exeute the batch file via Windows Task Scheduler.

The first file is just a Windows batch file which calls the sqlcmd utility and passes a SQL script file.
The SQL script file contains T-SQL. In my example, it's just one line to backup a database, but you can put any T-SQL inside. For example, you could do some UPDATE queries instead.

If the jobs you want to create are for backups, index maintenance or integrity checks, you could also use the excellent Maintenance Solution by Ola Hallengren.

It consists of a bunch of stored procedures (and SQL Agent jobs for non-Express editions of SQL Server), and in the FAQ there’s a section about how to run the jobs on SQL Server Express:

How do I get started with the SQL Server Maintenance Solution on SQL Server Express?

SQL Server Express has no SQL Server Agent. Therefore, the execution of the stored procedures must be scheduled by using cmd files and Windows Scheduled Tasks. Follow these steps.

SQL Server Express has no SQL Server Agent. Therefore, the execution of the stored procedures must be scheduled by using cmd files and Windows Scheduled Tasks. Follow these steps.

1. Download MaintenanceSolution.sql.

2. Execute MaintenanceSolution.sql. This script creates the stored procedures that you need.

3. Create cmd files to execute the stored procedures; for example:
   sqlcmd -E -S .\SQLEXPRESS -d master -Q "EXECUTE dbo.DatabaseBackup @Databases = 'USER_DATABASES', @Directory = N'C:\Backup', @BackupType = 'FULL'" -b -o C:\Log\DatabaseBackup.txt

4. In Windows Scheduled Tasks, create tasks to call the cmd files.

5. Schedule the tasks.

6. Start the tasks and verify that they are completing successfully.

Try using System.getProperty("line.separator") to get a new line.

Same for end of week (in style of @Compile This's answer):

    public static DateTime EndOfWeek(this DateTime dt)
    {
        int diff = 7 - (int)dt.DayOfWeek;

        diff = diff == 7 ? 0 : diff;

        DateTime eow = dt.AddDays(diff).Date;

        return new DateTime(eow.Year, eow.Month, eow.Day, 23, 59, 59, 999) { };
    }

set long 9999999
set lin 400
select DBMS_METADATA.GET_DDL('USER','YOUR_USER_NAME') from dual;

This will output something like this:

SQL> select DBMS_METADATA.GET_DDL('USER','WILIAM') from dual;

DBMS_METADATA.GET_DDL('USER','WILIAM')
--------------------------------------------------------------------------------

   CREATE USER "WILIAM" IDENTIFIED BY VALUES 'S:6680C1468F5F3B36B726CE7620F
FD9657F0E0E49AE56AAACE847BA368CEB;120F24A4C2554B4F'
      DEFAULT TABLESPACE "USER"
      TEMPORARY TABLESPACE "TEMP"
      PASSWORD EXPIRE

Just use the first piece of that with alter user instead:

ALTER USER "WILIAM" IDENTIFIED BY VALUES 'S:6680C1468F5F3B36B726CE7620F
FD9657F0E0E49AE56AAACE847BA368CEB;120F24A4C2554B4F';

This will put the account back in to OPEN status without changing the password (as long as you cut and paste correctly the hash value from the output of DBMS_METADATA.GET_DDL) and you don't even need to know what the password is.

I also attempted to use 'scatter' initially for this purpose. After quite a bit of wasted time - I settled on the following solution.

import matplotlib.pyplot as plt
input_list = [{'x':100,'y':200,'radius':50, 'color':(0.1,0.2,0.3)}]    
output_list = []   
for point in input_list:
    output_list.append(plt.Circle((point['x'], point['y']), point['radius'], color=point['color'], fill=False))
ax = plt.gca(aspect='equal')
ax.cla()
ax.set_xlim((0, 1000))
ax.set_ylim((0, 1000))
for circle in output_list:    
   ax.add_artist(circle)

This is based on an answer to this question

Using HTML 5.0, it is possible to fix width of text block using <span> or <div>.

For <span>, what is important is to add following CCS line

display: inline-block;

For your empty <span> what is important is to add   space.

My code is following

body_x000D_
 {_x000D_
 font-family: Arial;_x000D_
 font-size:20px;_x000D_
 }_x000D_
_x000D_
div_x000D_
 {_x000D_
 width:200px;_x000D_
 font-size:80px;_x000D_
 background-color: lime;_x000D_
 }_x000D_
div span_x000D_
 {_x000D_
 display:block;_x000D_
 width:200px;_x000D_
 background-color: lime;_x000D_
 }_x000D_
_x000D_
ul li span_x000D_
 {_x000D_
 display: inline-block;_x000D_
 width: 80px;_x000D_
 background-color: yellow;_x000D_
 }_x000D_
span.tab_x000D_
 {_x000D_
 display: inline-block;_x000D_
 width: 80px;_x000D_
 background-color: yellow;_x000D_
 }

<DIV>_x000D_
_x000D_
<div class='test'>ABCDEF</div>_x000D_
_x000D_
&lt;SPAN&gt;_x000D_
_x000D_
<div>_x000D_
    <span class='test'>ABCDEF</span>_x000D_
</div_x000D_
_x000D_
<br>_x000D_
_x000D_
<ul>_x000D_
  <li><span class='tab'>&nbsp;</span> The lazy dog.</li>_x000D_
  <li><span class='tab'>AND</span> The lazy cat.</li>_x000D_
  <li><span class='tab'>OR</span> The active goldfish.</li>_x000D_
</ul>

PS: I have defined tab class because ul li span CSS selector is not working on my PC !

You want to use:

git checkout --ours foo/bar.java
git add foo/bar.java

If you rebase a branch feature_x against main (i.e. running git rebase main while on branch feature_x), during rebasing ours refers to main and theirs to feature_x.

As pointed out in the git-rebase docs:

Note that a rebase merge works by replaying each commit from the working branch on top of the branch. Because of this, when a merge conflict happens, the side reported as ours is the so-far rebased series, starting with <upstream>, and theirs is the working branch. In other words, the sides are swapped.

For further details read this thread.

If you don't care about a minimum width for the div and really just don't want the div to expand across the whole container, you can float it left -- floated divs by default expand to support their contents, like so:

<form>
    <div style="float: left; background-color: blue">
        <input type="button" name="blah" value="lots and lots of characters"/>
        <input type="button" name="blah2" value="some characters"/>
    </div>
</form>

I know this is a really old question but I wanted to add a bit of explanation that I discovered the hard way (this is n00b information).

"Basic Authentication" shares the same accounts that you have on your local computer or network. If you leave the domain and realm empty, local accounts are what are actually being used. So to add a new account you follow the exact process you would for adding a normal new user account to your local computer (as answered by JoshM or shown here). If you enter a domain and realm you can create network accounts in your local active directory and these are what will be used to log the user in and out.

Because it has been around for so long, basic authentication is generally compatible with any browser/system out there but it does have to major flaws:

• user and password are sent in the clear (except over SSL)
• you need to have a user account for each user or client

For more information about basic authentication or user accounts see the following MSDN page.

To use the push function of an Array your var needs to be an Array.

Change data{"name":"ananta","age":"15"} to following:

var data = [
    { 
        "name": "ananta",
        "age": "15",
        "country": "Atlanta"
    }
];

data.push({"name": "Tony Montana", "age": "99"});

data.push({"country": "IN"});

..

The containing Array Items will be typeof Object and you can do following:

var text = "You are " + data[0]->age + " old and come from " + data[0]->country;

Notice: Try to be consistent. In my example, one array contained object properties name and age while the other only contains country. If I iterate this with for or forEach then I can't always check for one property, because my example contains Items that changing.

Perfect would be: data.push({ "name": "Max", "age": "5", "country": "Anywhere" } );

So you can iterate and always can get the properties, even if they are empty, null or undefined.

edit

Cool stuff to know:

var array = new Array();

is similar to:

var array = [];

Also:

var object = new Object();

is similar to:

var object = {};

You also can combine them:

var objectArray = [{}, {}, {}];

Check you are calling same function or not.

<script>function greeting(){document.write("hi");}</script>

<input type="button" value="Click Here" onclick="greeting();"/>

No exact equivalent. However there exist a native DOS command "more" that has a +n option that will start outputting the file after the nth line:

DOS Prompt:

C:\>more +2 myfile.txt

The above command will output everything after the first 2 lines.
This is actually the inverse of Unix head:

Unix console:

root@server:~$ head -2 myfile.txt

The above command will print only the first 2 lines of the file.

This might be useful when you need individually annotate in different time (I mean, not in a single for loop)

ax = plt.gca()
ax.annotate('your_lable', (x,y)) 

where x and y are the your target coordinate and type is float/int.

A one-liner to rot13 a string S:

S.translate({a : a + (lambda x: 1 if x>=0 else -1)(77 - a) * 13 for a in range(65, 91)})

I am not really sure why, but as soon as I comment out the following method it works:

connectionDidFinishDownloading:destinationURL:

Furthermore, I don't think you need the methods from the NSUrlConnectionDownloadDelegate protocol, only those from NSURLConnectionDataDelegate, unless you want some download information.

You can do this. Just don't forget to put "return" before your JSX component.

Example:

render() {
    if(this.state.page === 'news') {
        return <Text>This is news page</Text>;
    } else {
        return <Text>This is another page</Text>;
    }
}

Example to fetch data from internet:

import React, { Component } from 'react';
import {
    View,
    Text
} from 'react-native';

export default class Test extends Component {
    constructor(props) {
        super(props);

        this.state = {
            bodyText: ''
        }
    }

    fetchData() {
        fetch('https://example.com').then((resp) => {
            this.setState({
                bodyText: resp._bodyText
            });
        });
    }

    componentDidMount() {
        this.fetchData();
    }

    render() {
        return <View style={{ flex: 1 }}>
            <Text>{this.state.bodyText}</Text>
        </View>
    }
}

Put in other words, this error is telling you that SQL Server does not know which B to select from the group.

Either you want to select one specific value (e.g. the MIN, SUM, or AVG) in which case you would use the appropriate aggregate function, or you want to select every value as a new row (i.e. including B in the GROUP BY field list).

Consider the following data:

ID  A   B
1   1  13
1   1  79
1   2  13
1   2  13
1   2  42

The query

SELECT A, COUNT(B) AS T1 
FROM T2 
GROUP BY A

would return:

A  T1
1  2
2  3

which is all well and good.

However consider the following (illegal) query, which would produce this error:

SELECT A, COUNT(B) AS T1, B 
FROM T2 
GROUP BY A

And its returned data set illustrating the problem:

A  T1  B
1  2   13? 79? Both 13 and 79 as separate rows? (13+79=92)? ...?
2  3   13? 42? ...?

However, the following two queries make this clear, and will not cause the error:

1. Using an aggregate

   SELECT A, COUNT(B) AS T1, SUM(B) AS B
   FROM T2
   GROUP BY A
   

   would return:

   A  T1  B
   1  2   92
   2  3   68
   

2. Adding the column to the GROUP BY list

   SELECT A, COUNT(B) AS T1, B
   FROM T2
   GROUP BY A, B
   

   would return:

   A  T1  B
   1  1   13
   1  1   79
   2  2   13
   2  1   42
   

In Swift 4, as String is a collection of Character, you need to use map

let array1 = Array("hello") // Array<Character>
let array2 = Array("hello").map({ "\($0)" }) // Array<String>
let array3 = "hello".map(String.init) // Array<String>

per various post... you cannot trigger a download via XHR. I needed to implement condition for the download, so, My solution was:

//make the call to the api with the ID to validate
someResource.get( { id: someId }, function(data) {
     //confirm that the ID is validated
     if (data.isIdConfirmed) {
         //get the token from the validation and issue another call
         //to trigger the download
         window.open('someapi/print/:someId?token='+ data.token);
     }
});

I wish that somehow, or someday the download can be triggered using XHR to avoid the second call. // _e

Me just restarted computer and it worked greatly for me.

Lots of ways to do this. The most reliable is find.

Dim rLastCell As Range

Set rLastCell = ws.Cells.Find(What:="*", After:=ws.Cells(1, 1), LookIn:=xlFormulas, LookAt:= _
xlPart, SearchOrder:=xlByColumns, SearchDirection:=xlPrevious, MatchCase:=False)

MsgBox ("The last used column is: " & rLastCell.Column)

If you want to find the last column used in a particular row you can use:

Dim lColumn As Long

lColumn = ws.Cells(1, Columns.Count).End(xlToLeft).Column

Using used range (less reliable):

Dim lColumn As Long

lColumn = ws.UsedRange.Columns.Count

Using used range wont work if you have no data in column A. See here for another issue with used range:

See Here regarding resetting used range.

The regex you're looking for is ^[A-Za-z.\s_-]+$

• ^ asserts that the regular expression must match at the beginning of the subject
• [] is a character class - any character that matches inside this expression is allowed
• A-Z allows a range of uppercase characters
• a-z allows a range of lowercase characters
• . matches a period rather than a range of characters
• \s matches whitespace (spaces and tabs)
• _ matches an underscore
• - matches a dash (hyphen); we have it as the last character in the character class so it doesn't get interpreted as being part of a character range. We could also escape it (\-) instead and put it anywhere in the character class, but that's less clear
• + asserts that the preceding expression (in our case, the character class) must match one or more times
• $ Finally, this asserts that we're now at the end of the subject

When you're testing regular expressions, you'll likely find a tool like regexpal helpful. This allows you to see your regular expression match (or fail to match) your sample data in real time as you write it.

If you need to skip (head-)lines and/or columns, you can use this to create a 2-dimensional array:

    var lines = File.ReadAllLines(path).Select(a => a.Split(';'));
    var csv = (from line in lines               
               select (from col in line
               select col).Skip(1).ToArray() // skip the first column
              ).Skip(2).ToArray(); // skip 2 headlines

This is quite useful if you need to shape the data before you process it further (assuming the first 2 lines consist of the headline, and the first column is a row title - which you don't need to have in the array because you just want to regard the data).

N.B. You can easily get the headlines and the 1st column by using the following code:

    var coltitle = (from line in lines 
                    select line.Skip(1).ToArray() // skip 1st column
                   ).Skip(1).Take(1).FirstOrDefault().ToArray(); // take the 2nd row
    var rowtitle = (from line in lines select line[0] // take 1st column
                   ).Skip(2).ToArray(); // skip 2 headlines

This code example assumes the following structure of your *.csv file:

Note: If you need to skip empty rows - which can by handy sometimes, you can do so by inserting

    where line.Any(a=>!string.IsNullOrWhiteSpace(a))

between the from and the select statement in the LINQ code examples above.

See here it can be done using the DataGridView RowTemplate property.

Note: This code isn't tested but I've used this method before.

// Create DataGridView
DataGridView gridView = new DataGridView();
gridView.AutoGenerateColumns = false;
gridView.Columns.Add("Col", "Col");

// Create ContextMenu and set event
ContextMenuStrip cMenu = new ContextMenuStrip();
ToolStripItem mItem = cMenu.Items.Add("Delete");
mItem.Click += (o, e) => { /* Do Something */ };           

// This makes all rows added to the datagridview use the same context menu
DataGridViewRow defaultRow = new DataGridViewRow();
defaultRow.ContextMenuStrip = cMenu;

And there you go, as easy as that!

There is a c++ class called _bstr_t. It has useful methods and a collection of overloaded operators.

For example, you can easily assign from a const wchar_t * or a const char * just doing _bstr_t bstr = L"My string"; Then you can convert it back doing const wchar_t * s = bstr.operator const wchar_t *();. You can even convert it back to a regular char const char * c = bstr.operator char *(); You can then just use the const wchar_t * or the const char * to initialize a new std::wstring oe std::string.

for me problem was solved by,

sudo apt-get remove node
sudo apt-get remove nodejs
curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
sudo apt-get install -y nodejs
sudo ln -s /usr/bin/nodejs /usr/bin/node
alias node=nodejs
rm -r /usr/local/lib/python2.7/dist-packages/localstack/node_modules
npm install -g npm@latest || sudo npm install -g npm@latest

If you are just comparing numbers, I think there's no need to change syntax, just correct those lines, lines 6 and 9 brackets.

Line 6 before: if [ "$age" -le "7"] -o [ "$age" -ge " 65" ]

After: if [ "$age" -le "7" -o "$age" -ge "65" ]

Line 9 before: elif [ "$age" -gt "7"] -a [ "$age" -lt "65"]

After: elif [ "$age" -gt "7" -a "$age" -lt "65" ]

Here is a fairly simple way to get the args and set them as env vars. In this example I will just refer to them as Keys and Values.

Save the following code example as "args.bat". Then call the batch file you saved from a command line. example: arg.bat --x 90 --y 120

I have provided some echo commands to step you through the process. But the end result is that --x will have a value of 90 and --y will have a value of 120(that is if you run the example as specified above ;-) ).

You can then use the 'if defined' conditional statement to determine whether or not to run your code block. So lets say run: "arg.bat --x hello-world" I could then use the statement "IF DEFINED --x echo %--x%" and the results would be "hello-world". It should make more sense if you run the batch.

@setlocal enableextensions enabledelayedexpansion
@ECHO off
ECHO.
ECHO :::::::::::::::::::::::::: arg.bat example :::::::::::::::::::::::::::::::
ECHO :: By:      User2631477, 2013-07-29                                   ::
ECHO :: Version: 1.0                                                         ::
ECHO :: Purpose: Checks the args passed to the batch.                        ::
ECHO ::                                                                      ::
ECHO :: Start by gathering all the args with the %%* in a for loop.          ::
ECHO ::                                                                      ::
ECHO :: Now we use a 'for' loop to search for our keys which are identified  ::
ECHO :: by the text '--'. The function then sets the --arg ^= to the next    ::
ECHO :: arg. "CALL:Function_GetValue" ^<search for --^> ^<each arg^>         ::
ECHO ::                                                                      ::
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

ECHO.

ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO :: From the command line you could pass... arg.bat --x 90 --y 220       ::
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO.
ECHO.Checking Args:"%*"

FOR %%a IN (%*) do (
    CALL:Function_GetValue "--","%%a" 
)

ECHO.
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO :: Now lets check which args were set to variables...                   ::
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO.
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO :: For this we are using the CALL:Function_Show_Defined "--x,--y,--z"   ::
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO.
CALL:Function_Show_Defined "--x,--y,--z"
endlocal
goto done

:Function_GetValue

REM First we use find string to locate and search for the text.
echo.%~2 | findstr /C:"%~1" 1>nul

REM Next we check the errorlevel return to see if it contains a key or a value
REM and set the appropriate action.

if not errorlevel 1 (
  SET KEY=%~2
) ELSE (
  SET VALUE=%~2
)
IF DEFINED VALUE (
    SET %KEY%=%~2
    ECHO.
    ECHO ::::::::::::::::::::::::: %~0 ::::::::::::::::::::::::::::::
    ECHO :: The KEY:'%KEY%' is now set to the VALUE:'%VALUE%'                     ::
    ECHO :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
    ECHO.
    ECHO %KEY%=%~2
    ECHO.
    REM It's important to clear the definitions for the key and value in order to
    REM search for the next key value set.
    SET KEY=
    SET VALUE=
)
GOTO:EOF

:Function_Show_Defined 
ECHO.
ECHO ::::::::::::::::::: %~0 ::::::::::::::::::::::::::::::::
ECHO :: Checks which args were defined i.e. %~2
ECHO :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO.
SET ARGS=%~1
for %%s in (%ARGS%) DO (
    ECHO.
    ECHO :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
    ECHO :: For the ARG: '%%s'                         
    IF DEFINED %%s (
        ECHO :: Defined as: '%%s=!%%s!'                                             
    ) else (
        ECHO :: Not Defined '%%s' and thus has no value.
    )
    ECHO :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
    ECHO.
)
goto:EOF

:done

You need spaces around the operator =~

i="test"
if [[ $i =~ "200[78]" ]];
then
  echo "OK"
else
  echo "not OK"
fi

I will suggest creating a setup project for the reasons while deploying this seems the best convinience , no headaches of copying files manually. Follow the Windows service setup creation tutorial and you know how to create it. And this instance is for vb.net but it is the same for any type.

In the case of no repeats and no order, the following EqualityComparer can be used to allow collections as dictionary keys:

public class SetComparer<T> : IEqualityComparer<IEnumerable<T>> 
where T:IComparable<T>
{
    public bool Equals(IEnumerable<T> first, IEnumerable<T> second)
    {
        if (first == second)
            return true;
        if ((first == null) || (second == null))
            return false;
        return first.ToHashSet().SetEquals(second);
    }

    public int GetHashCode(IEnumerable<T> enumerable)
    {
        int hash = 17;

        foreach (T val in enumerable.OrderBy(x => x))
            hash = hash * 23 + val.GetHashCode();

        return hash;
    }
}

Here is the ToHashSet() implementation I used. The hash code algorithm comes from Effective Java (by way of Jon Skeet).

use js split() method to create an array

var keywords = $('#searchKeywords').val().split(",");

then loop through the array using jQuery.each() function. as the documentation says:

In the case of an array, the callback is passed an array index and a corresponding array value each time

$.each(keywords, function(i, keyword){
   console.log(keyword);
});

UPDATE MyTable
   SET MyText = SUBSTRING(MyText, 1, CHARINDEX(';', MyText) - 1)
 WHERE CHARINDEX(';', MyText) > 0 

I have had a similar question and I was using signal:

import signal

def signal_handler(signal_number, frame):
    print "Proceed ..."

signal.signal(signal.SIGINT, signal_handler)
signal.pause()

So you register a handler for the signal SIGINT and pause waiting for any signal. Now from outside your program (e.g. in bash), you can run kill -2 <python_pid>, which will send signal 2 (i.e. SIGINT) to your python program. Your program will call your registered handler and proceed running.

It can be done this way as well:

$('input', '#div').each(function () {
    console.log($(this)); //log every element found to console output
});

It means that the variable in question is pointed at nothing. I could generate this like so:

SqlConnection connection = null;
connection.Open();

That will throw the error because while I've declared the variable "connection", it's not pointed to anything. When I try to call the member "Open", there's no reference for it to resolve, and it will throw the error.

To avoid this error:

1. Always initialize your objects before you try to do anything with them.
2. If you're not sure whether the object is null, check it with object == null.

JetBrains' Resharper tool will identify every place in your code that has the possibility of a null reference error, allowing you to put in a null check. This error is the number one source of bugs, IMHO.

(WHEN .wsdl is referring to .xsd/schemas using import) If you're using the WMB Tooklit (v8.0.0.4 WMB) then you can find .xsd using following steps :

Create library (optional) > Right Click , New Message Model File > Select SOAP XML > Choose Option 'I already have WSDL for my data' > 'Select file outside workspace' > 'Select the WSDL bindings to Import' (if there are multiple) > Finish.

This will give you the .xsd and .wsdl files in your Workspace (Application Perspective).

Content is what is passed as children. View is the template of the current component.

The view is initialized before the content and ngAfterViewInit() is therefore called before ngAfterContentInit().

** ngAfterViewInit() is called when the bindings of the children directives (or components) have been checked for the first time. Hence its perfect for accessing and manipulating DOM with Angular 2 components. As @Günter Zöchbauer mentioned before is correct @ViewChild() hence runs fine inside it.

Example:

@Component({
    selector: 'widget-three',
    template: `<input #input1 type="text">`
})
export class WidgetThree{
    @ViewChild('input1') input1;

    constructor(private renderer:Renderer){}

    ngAfterViewInit(){
        this.renderer.invokeElementMethod(
            this.input1.nativeElement,
            'focus',
            []
        )
    }
}

int sum=0;
for(int i:A)
  sum+=i;

I'd personally suggest using a different unit of measurement than px. I don't think that pixels have much relevance in terms of print; ideally you'd use:

• point (pt)
• centimetre (cm)

I'm sure there are others, and one excellent article about print-css can be found here: Going to Print, by Eric Meyer.

I surprise no one had mentioned this possible easy approach in visual studio code.

Install VS Code and Apache maven ( just as mentioned by @Steve Chambers)

After installing this extension vscode:extension/vscjava.vscode-java-pack

In the java overview page , there is a an option which reads 'Create Maven Project' which further takes to a simple wizard to generate maven project.

Its pretty quick which is intutitive enough, even newbies can very well start with a Maven project.

Have you tried something like this?

button.setBackgroundTintList(getResources().getColorStateList(R.id.blue_100));

note that getResources() will only work in an activity. But it can be called on every context too.

sleep(1.0/24.0)

As to your follow up question if that's the best way: No, you could get not-so-smooth framerates because the rendering of each frame might not take the same amount of time.

You could try one of these solutions:

• Use a timer which fires 24 times a second with the drawing code.
• Create as many frames as possible, create the motion based on the time passed, not per frame.

If you can access the server over ssh and can run your own scripts you can make a simple fifo server using php (although you will have to recompile php with posix support for fork).

The server can be written in anything really, you probably can easily do it in python.

Or the simplest solution would be sending an HttpRequest and not reading the return data but the server might destroy the script before it finish processing.

Example server :

<?php
define('FIFO_PATH', '/home/user/input.queue');
define('FORK_COUNT', 10);

if(file_exists(FIFO_PATH)) {
    die(FIFO_PATH . ' exists, please delete it and try again.' . "\n");
}

if(!file_exists(FIFO_PATH) && !posix_mkfifo(FIFO_PATH, 0666)){
    die('Couldn\'t create the listening fifo.' . "\n");
}

$pids = array();
$fp = fopen(FIFO_PATH, 'r+');
for($i = 0; $i < FORK_COUNT; ++$i) {
    $pids[$i] = pcntl_fork();
    if(!$pids[$i]) {
        echo "process(" . posix_getpid() . ", id=$i)\n";
        while(true) {
            $line = chop(fgets($fp));
            if($line == 'quit' || $line === false) break;
            echo "processing (" . posix_getpid() . ", id=$i) :: $line\n";
        //  $data = json_decode($line);
        //  processData($data);
        }
        exit();
    }
}
fclose($fp);
foreach($pids as $pid){
    pcntl_waitpid($pid, $status);
}
unlink(FIFO_PATH);
?>

Example client :

<?php
define('FIFO_PATH', '/home/user/input.queue');
if(!file_exists(FIFO_PATH)) {
    die(FIFO_PATH . ' doesn\'t exist, please make sure the fifo server is running.' . "\n");
}

function postToQueue($data) {
    $fp = fopen(FIFO_PATH, 'w+');
    stream_set_blocking($fp, false); //don't block
    $data = json_encode($data) . "\n";
    if(fwrite($fp, $data) != strlen($data)) {
        echo "Couldn't the server might be dead or there's a bug somewhere\n";
    }
    fclose($fp);
}
$i = 1000;
while(--$i) {
    postToQueue(array('xx'=>21, 'yy' => array(1,2,3)));
}
?>

Yes, you can:

You can create a C-language project by using C++ project templates. In the generated project, locate files that have a .cpp file name extension and change it to .c. Then, on the Project Properties page for the project (not for the solution), expand Configuration Properties, C/C++ and select Advanced. Change the Compile As setting to Compile as C Code (/TC).

https://docs.microsoft.com/en-us/cpp/ide/visual-cpp-project-types?view=vs-2017

Hint: actively refused sounds like somewhat deeper technical trouble, but...

...actually, this response (and also specifically errno:10061) is also given, if one calls the bin/mongo executable and the mongodb service is simply not running on the target machine. This even applies to local machine instances (all happening on localhost).

? Always rule out for this trivial possibility first, i.e. simply by using the command line client to access your db.

See here.

A "REST service" and a "RESTful service" are one and the same.

A RESTful system is any system that follows the REST conventions as defined in the original document that created the idea of RESTful networked applications.

It's worth noting there are varying levels of RESTfulness. Overall, REST is a style, not a standard, so there is room for interpretation based on needs. one example is hierarchical resource URLs (e.g. /things/ID/relatedthings) vs flat URLs (e.g. /things/ID and /relatedthings?thing=ID)

Additionally if someone have a use case where he needs group names before executing search on Regex object he can use:

var regex = new Regex(pattern); // initialized somewhere
// ...
var groupNames = regex.GetGroupNames();

For the MySQL fans out there, I like the IFNULL() function. Other answers here suggest similar functionality with the ISNULL() function in some implementations. In my situation, I have a column of descriptions which is NOT NULL, and a column of serial numbers which may be NULL This is how I combined them into one column:

SELECT CONCAT(description,IFNULL(' SN: ', serial_number),'')) FROM my_table;

My results suggest that the results of concatenating a string with NULL results in a NULL. I have been getting the alternative value in those cases.

The ideas provided above are good. For fast access (in case you would like to make a real time application) you could try the following:

//suppose you read an image from a file that is gray scale
Mat image = imread("Your path", CV_8UC1);
//...do some processing
uint8_t *myData = image.data;
int width = image.cols;
int height = image.rows;
int _stride = image.step;//in case cols != strides
for(int i = 0; i < height; i++)
{
    for(int j = 0; j < width; j++)
    {
        uint8_t val = myData[ i * _stride + j];
        //do whatever you want with your value
    }
}

Pointer access is much faster than the Mat.at<> accessing. Hope it helps!

call your (windows-)git with cygpath as parameter, in order to convert the "calling path". I m confused why that should be a problem.

I have used methods described above. Now I am using the method which is a way similiar but more simple to me.

1. First create add README.md file to your project.
2. Then upload screenshoots or whatever description images needed to your project main directory.
3. After uploading image Assets use html to refer these assets directly without using link like below

Like this:

<img src="icon.jpg" width="324" height="324">

<p align="center">
  <img src="screen1.png" width="256" height="455">
  <img src="screen2.png" width="256" height="455">
  <img src="screen3.png" width="256" height="455">
</p>

On above example I have used paragraph to align images side by side. If you are going to use single image just use the code as below

<img src="icon.jpg" width="324" height="324">

Have a nice day!

With ES6 you can write this:

const countries = ['United States', 'Canada', 'Argentina', 'Armenia'];

const $ul = $('<ul>', { class: "mylist" }).append(
  countries.map(country => 
    $("<li>").append($("<a>").text(country))
  )
);

IN xampp just export the required table as a .sql file and then import it to the required

You can use \n to concatenate words and then apply this style to container div.

style="white-space: pre;"

More info can be found at https://developer.mozilla.org/en-US/docs/Web/CSS/white-space

<p style="white-space: pre;">_x000D_
    This is normal text._x000D_
</p>_x000D_
<p style="white-space: pre;">_x000D_
    This _x000D_
  text _x000D_
  contains _x000D_
  new lines._x000D_
</p>

If you are performing a new install of the SenseNet TaskManagement website on IIS (from source code, not WebPI), you will get this message, usually related to SignalR communication. As @nicole-caliniou points out, it is due to a key search in the Registry that fails.

To solve this for SenseNet TaskManagement v1.1.0, first find the registry key name in the web.config file. By default it is "SnTaskWeb".

 <appSettings>
   <add key="LogSourceName" value="SnTaskWeb" />

Open the registry editor, regedit.exe, and navigate to HKLM\SYSTEM\CurrentControlSet\Services\EventLog\SnTask. Right-click on SnTask and select New Key, and name the key SnTaskWeb for the configuration shown above. Then right-click on the SnTaskWeb element and select New Expandable String Value. The name should be EventMessageFile and the value data should be C:\Windows\Microsoft.NET\Framework\v4.0.30319\EventLogMessages.dll.

Keywords: signalr, sensenet, regedit, permissions

@Valid in itself has nothing to do with Spring. It's part of Bean Validation specification(there are several of them, the latest one being JSR 380 as of second half of 2017), but @Valid is very old and derives all the way from JSR 303.

As we all know, Spring is very good at providing integration with all different JSRs and java libraries in general(think of JPA, JTA, Caching, etc.) and of course those guys took care of validation as well. One of the key components that facilitates this is MethodValidationPostProcessor.

Trying to answer your question - @Valid is very handy for so called validation cascading when you want to validate a complex graph and not just a top-level elements of an object. Every time you want to go deeper, you have to use @Valid. That's what JSR dictates. Spring will comply with that with some minor deviations(for example I tried putting @Validated instead of @Valid on RestController method and validation works, but the same will not apply for a regular "service" beans).

The first parameter is the String to encode; the second is the name of the character encoding to use (e.g., UTF-8).

Here is how you can create a rounded rectangle with SVG Path:

<path d="M100,100 h200 a20,20 0 0 1 20,20 v200 a20,20 0 0 1 -20,20 h-200 a20,20 0 0 1 -20,-20 v-200 a20,20 0 0 1 20,-20 z" />

Explanation

m100,100: move to point(100,100)

h200: draw a 200px horizontal line from where we are

a20,20 0 0 1 20,20: draw an arc with 20px X radius, 20px Y radius, clockwise, to a point with 20px difference in X and Y axis

v200: draw a 200px vertical line from where we are

a20,20 0 0 1 -20,20: draw an arc with 20px X and Y radius, clockwise, to a point with -20px difference in X and 20px difference in Y axis

h-200: draw a -200px horizontal line from where we are

a20,20 0 0 1 -20,-20: draw an arc with 20px X and Y radius, clockwise, to a point with -20px difference in X and -20px difference in Y axis

v-200: draw a -200px vertical line from where we are

a20,20 0 0 1 20,-20: draw an arc with 20px X and Y radius, clockwise, to a point with 20px difference in X and -20px difference in Y axis

z: close the path

<svg width="440" height="440">_x000D_
  <path d="M100,100 h200 a20,20 0 0 1 20,20 v200 a20,20 0 0 1 -20,20 h-200 a20,20 0 0 1 -20,-20 v-200 a20,20 0 0 1 20,-20 z" fill="none" stroke="black" stroke-width="3" />_x000D_
</svg>

Your APT proxy settings are not related to Docker.

Docker uses the HTTP_PROXY environment variable, if present. For example:

sudo HTTP_PROXY=http://192.168.1.1:3128/ docker pull busybox

But instead, I suggest you have a look at your /etc/default/dockerconfiguration file: you should have a line to uncomment (and maybe adjust) to get your proxy settings applied automatically. Then restart the Docker server:

service docker restart

if(($("#checkboxid1").is(":checked")) || ($("#checkboxid2").is(":checked"))
            || ($("#checkboxid3").is(":checked"))) {
 //Your Code here
}

You can use this code to verify that checkbox is checked at least one.

Thanks!!

I'll give my input because it helps me understand what im doing.

To make an auto scrolling slide show that has a 3 second wait I did the following:

var isPlaying = true;

function autoPlay(playing){
   var delayTime = 3000;
   var timeIncrement = 3000;

   if(playing){
        for(var i=0; i<6; i++){//I have 6 images
            setTimeout(nextImage, delayTime);
            delayTime += timeIncrement;
        }
        isPlaying = false;

   }else{
       alert("auto play off");
   }
}

autoPlay(isPlaying);

Remember that when executing setTimeout() like this; it will execute all time out functions as if they where executed at the same time assuming that in setTimeout(nextImage, delayTime);delay time is a static 3000 milliseconds.

What I did to account for this was add an extra 3000 milli/s after each for loop incrementation via delayTime += timeIncrement;.

For those who care here is what my nextImage() looks like:

function nextImage(){
    if(currentImg === 1){//change to img 2
        for(var i=0; i<6; i++){
            images[i].style.zIndex = "0";
        }
        images[1].style.zIndex = "1";
        imgNumber.innerHTML = imageNumber_Text[1];
        imgDescription.innerHTML = imgDescText[1];

        currentImg = 2;
    }
    else if(currentImg === 2){//change to img 3
        for(var i=0; i<6; i++){
            images[i].style.zIndex = "0";
        }
        images[2].style.zIndex = "1";
        imgNumber.innerHTML = imageNumber_Text[2];
        imgDescription.innerHTML = imgDescText[2];

        currentImg = 3;
    }
    else if(currentImg === 3){//change to img 4
        for(var i=0; i<6; i++){
            images[i].style.zIndex = "0";
        }
        images[3].style.zIndex = "1";
        imgNumber.innerHTML = imageNumber_Text[3];
        imgDescription.innerHTML = imgDescText[3];

        currentImg = 4;
    }
    else if(currentImg === 4){//change to img 5
        for(var i=0; i<6; i++){
            images[i].style.zIndex = "0";
        }
        images[4].style.zIndex = "1";
        imgNumber.innerHTML = imageNumber_Text[4];
        imgDescription.innerHTML = imgDescText[4];

        currentImg = 5;
    }
    else if(currentImg === 5){//change to img 6
    for(var i=0; i<6; i++){
            images[i].style.zIndex = "0";
        }
        images[5].style.zIndex = "1";
        imgNumber.innerHTML = imageNumber_Text[5];
        imgDescription.innerHTML = imgDescText[5];

        currentImg = 6;
    }
    else if(currentImg === 6){//change to img 1
        for(var i=0; i<6; i++){
            images[i].style.zIndex = "0";
        }
        images[0].style.zIndex = "1";
        imgNumber.innerHTML = imageNumber_Text[0];
        imgDescription.innerHTML = imgDescText[0];

        currentImg = 1;
    }
}

Note: this only answers part of the question.

If you just want to know the maximum number of sessions allowed, then you can execute in sqlplus, as sysdba:

SQL> show parameter sessions

This gives you an output like:

    NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
java_max_sessionspace_size           integer     0
java_soft_sessionspace_limit         integer     0
license_max_sessions                 integer     0
license_sessions_warning             integer     0
sessions                             integer     248
shared_server_sessions               integer

The sessions parameter is the one what you want.

There is a special trick I discovered by accident.

1. Select the query you wish to format.
2. Ctrl+Shift+Q (This will open your query in the query designer)
3. Then just go OK Voila! Query designer will format your query for you. Caveat is that you can only do this for statements and not procedural code, but its better than nothing.

I don't think there's a recommended order, as long as it compiles! What's annoying is when some headers require other headers to be included first... That's a problem with the headers themselves, not with the order of includes.

My personal preference is to go from local to global, each subsection in alphabetical order, i.e.:

1. h file corresponding to this cpp file (if applicable)
2. headers from the same component,
3. headers from other components,
4. system headers.

My rationale for 1. is that it should prove that each header (for which there is a cpp) can be #included without prerequisites (terminus technicus: header is "self-contained"). And the rest just seems to flow logically from there.

According to this code golfing solution by Gaffi, the following works:

a = Split(StrConv(s, 64), Chr(0))

If you are catching a browser back/forward button and don't want to navigate away, you can use:

window.addEventListener('popstate', function() {
    if (window.location.origin !== 'http://example.com') {
        // Do something if not your domain
    } else if (window.location.href === 'http://example.com/sign-in/step-1') {
        window.history.go(2); // Skip the already-signed-in pages if the forward button was clicked
    } else if (window.location.href === 'http://example.com/sign-in/step-2') {
        window.history.go(-2); // Skip the already-signed-in pages if the back button was clicked
    } else {
        // Let it do its thing
    }
});

Otherwise, you can use the beforeunload event, but the message may or may not work cross-browser, and requires returning something that forces a built-in prompt.

The easy method that will work even in corrupted setup environment is :

To download ez_setup.py and run it using command line

python ez_setup.py

output

Extracting in c:\uu\uu\appdata\local\temp\tmpjxvil3 Now working in c:\u\u\appdata\local\temp\tmpjxvil3\setuptools-5.6 Installing Setuptools

run

pip install beautifulsoup4

output

Downloading/unpacking beautifulsoup4 Running setup.py ... egg_info for package Installing collected packages: beautifulsoup4 Running setup.py install for beautifulsoup4 Successfully installed beautifulsoup4 Cleaning up...

Bam ! |Done¬

just give

a{
color:blue
}

even if its is visited it will always be blue

Numbers with at most 2 decimal places:

/^\d+(?:\.\d{1,2})?$/

This should work fine. Please try out :)

When executable path has whitespace in system, call

#include<iostream>
using namespace std;
int main()
{
    system("explorer C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe ");
    system("pause");
return 0;
}

With "Asset Type" set to "Image", try setting the same image for the foreground and background layers, keeping the same "Resize" percentage.

After trying almost every key on my keyboard:

C:\Users\Tim>cd ^
Mehr? Desktop

C:\Users\Tim\Desktop>

So it seems to be the ^ key.

This worked for me:

$('.class1[class~="class2"]').append('something');

Try this one -

Query:

SELECT 
      database_name = DB_NAME(database_id)
    , log_size_mb = CAST(SUM(CASE WHEN type_desc = 'LOG' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
    , row_size_mb = CAST(SUM(CASE WHEN type_desc = 'ROWS' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
    , total_size_mb = CAST(SUM(size) * 8. / 1024 AS DECIMAL(8,2))
FROM sys.master_files WITH(NOWAIT)
WHERE database_id = DB_ID() -- for current db 
GROUP BY database_id

Output:

-- my query
name           log_size_mb  row_size_mb   total_size_mb
-------------- ------------ ------------- -------------
xxxxxxxxxxx    512.00       302.81        814.81

-- sp_spaceused
database_name    database_size      unallocated space
---------------- ------------------ ------------------
xxxxxxxxxxx      814.81 MB          13.04 MB

Function:

ALTER FUNCTION [dbo].[GetDBSize] 
(
    @db_name NVARCHAR(100)
)
RETURNS TABLE
AS
RETURN

  SELECT 
        database_name = DB_NAME(database_id)
      , log_size_mb = CAST(SUM(CASE WHEN type_desc = 'LOG' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
      , row_size_mb = CAST(SUM(CASE WHEN type_desc = 'ROWS' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
      , total_size_mb = CAST(SUM(size) * 8. / 1024 AS DECIMAL(8,2))
  FROM sys.master_files WITH(NOWAIT)
  WHERE database_id = DB_ID(@db_name)
      OR @db_name IS NULL
  GROUP BY database_id

UPDATE 2016/01/22:

Show information about size, free space, last database backups

IF OBJECT_ID('tempdb.dbo.#space') IS NOT NULL
    DROP TABLE #space

CREATE TABLE #space (
      database_id INT PRIMARY KEY
    , data_used_size DECIMAL(18,2)
    , log_used_size DECIMAL(18,2)
)

DECLARE @SQL NVARCHAR(MAX)

SELECT @SQL = STUFF((
    SELECT '
    USE [' + d.name + ']
    INSERT INTO #space (database_id, data_used_size, log_used_size)
    SELECT
          DB_ID()
        , SUM(CASE WHEN [type] = 0 THEN space_used END)
        , SUM(CASE WHEN [type] = 1 THEN space_used END)
    FROM (
        SELECT s.[type], space_used = SUM(FILEPROPERTY(s.name, ''SpaceUsed'') * 8. / 1024)
        FROM sys.database_files s
        GROUP BY s.[type]
    ) t;'
    FROM sys.databases d
    WHERE d.[state] = 0
    FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 2, '')

EXEC sys.sp_executesql @SQL

SELECT
      d.database_id
    , d.name
    , d.state_desc
    , d.recovery_model_desc
    , t.total_size
    , t.data_size
    , s.data_used_size
    , t.log_size
    , s.log_used_size
    , bu.full_last_date
    , bu.full_size
    , bu.log_last_date
    , bu.log_size
FROM (
    SELECT
          database_id
        , log_size = CAST(SUM(CASE WHEN [type] = 1 THEN size END) * 8. / 1024 AS DECIMAL(18,2))
        , data_size = CAST(SUM(CASE WHEN [type] = 0 THEN size END) * 8. / 1024 AS DECIMAL(18,2))
        , total_size = CAST(SUM(size) * 8. / 1024 AS DECIMAL(18,2))
    FROM sys.master_files
    GROUP BY database_id
) t
JOIN sys.databases d ON d.database_id = t.database_id
LEFT JOIN #space s ON d.database_id = s.database_id
LEFT JOIN (
    SELECT
          database_name
        , full_last_date = MAX(CASE WHEN [type] = 'D' THEN backup_finish_date END)
        , full_size = MAX(CASE WHEN [type] = 'D' THEN backup_size END)
        , log_last_date = MAX(CASE WHEN [type] = 'L' THEN backup_finish_date END)
        , log_size = MAX(CASE WHEN [type] = 'L' THEN backup_size END)
    FROM (
        SELECT
              s.database_name
            , s.[type]
            , s.backup_finish_date
            , backup_size =
                        CAST(CASE WHEN s.backup_size = s.compressed_backup_size
                                    THEN s.backup_size
                                    ELSE s.compressed_backup_size
                        END / 1048576.0 AS DECIMAL(18,2))
            , RowNum = ROW_NUMBER() OVER (PARTITION BY s.database_name, s.[type] ORDER BY s.backup_finish_date DESC)
        FROM msdb.dbo.backupset s
        WHERE s.[type] IN ('D', 'L')
    ) f
    WHERE f.RowNum = 1
    GROUP BY f.database_name
) bu ON d.name = bu.database_name
ORDER BY t.total_size DESC

Output:

database_id name                             state_desc   recovery_model_desc total_size   data_size   data_used_size  log_size    log_used_size  full_last_date          full_size    log_last_date           log_size
----------- -------------------------------- ------------ ------------------- ------------ ----------- --------------- ----------- -------------- ----------------------- ------------ ----------------------- ---------
24          StackOverflow                    ONLINE       SIMPLE              66339.88     65840.00    65102.06        499.88      5.05           NULL                    NULL         NULL                    NULL
11          AdventureWorks2012               ONLINE       SIMPLE              16404.13     15213.00    192.69          1191.13     15.55          2015-11-10 10:51:02.000 44.59        NULL                    NULL
10          locateme                         ONLINE       SIMPLE              1050.13      591.00      2.94            459.13      6.91           2015-11-06 15:08:34.000 17.25        NULL                    NULL
8           CL_Documents                     ONLINE       FULL                793.13       334.00      333.69          459.13      12.95          2015-11-06 15:08:31.000 309.22       2015-11-06 13:15:39.000 0.01
1           master                           ONLINE       SIMPLE              554.00       492.06      4.31            61.94       5.20           2015-11-06 15:08:12.000 0.65         NULL                    NULL
9           Refactoring                      ONLINE       SIMPLE              494.32       366.44      308.88          127.88      34.96          2016-01-05 18:59:10.000 37.53        NULL                    NULL
3           model                            ONLINE       SIMPLE              349.06       4.06        2.56            345.00      0.97           2015-11-06 15:08:12.000 0.45         NULL                    NULL
13          sql-format.com                   ONLINE       SIMPLE              216.81       181.38      149.00          35.44       3.06           2015-11-06 15:08:39.000 23.64        NULL                    NULL
23          users                            ONLINE       FULL                173.25       73.25       3.25            100.00      5.66           2015-11-23 13:15:45.000 0.72         NULL                    NULL
4           msdb                             ONLINE       SIMPLE              46.44        20.25       19.31           26.19       4.09           2015-11-06 15:08:12.000 2.96         NULL                    NULL
21          SSISDB                           ONLINE       FULL                45.06        40.00       4.06            5.06        4.84           2014-05-14 18:27:11.000 3.08         NULL                    NULL
27          tSQLt                            ONLINE       SIMPLE              9.00         5.00        3.06            4.00        0.75           NULL                    NULL         NULL                    NULL
2           tempdb                           ONLINE       SIMPLE              8.50         8.00        4.50            0.50        1.78           NULL                    NULL         NULL                    NULL

Here is another answer:

With DinnerComboBox
.AddItem "Italian"
.AddItem "Chinese"
.AddItem "Frites and Meat"
End With 

Source: Show the

Can you not use AcceptButton in for the Forms Properties Window? This sets the default behaviour for the Enter key press, but you are still able to use other shortcuts.

MySQL has started deprecating SQL_CALC_FOUND_ROWS functionality with version 8.0.17 onwards.

So, it is always preferred to consider executing your query with LIMIT, and then a second query with COUNT(*) and without LIMIT to determine whether there are additional rows.

From docs:

The SQL_CALC_FOUND_ROWS query modifier and accompanying FOUND_ROWS() function are deprecated as of MySQL 8.0.17 and will be removed in a future MySQL version.

COUNT(*) is subject to certain optimizations. SQL_CALC_FOUND_ROWS causes some optimizations to be disabled.

Use these queries instead:

SELECT * FROM tbl_name WHERE id > 100 LIMIT 10;
SELECT COUNT(*) WHERE id > 100;

Also, SQL_CALC_FOUND_ROWS has been observed to having more issues generally, as explained in the MySQL WL# 12615 :

SQL_CALC_FOUND_ROWS has a number of problems. First of all, it's slow. Frequently, it would be cheaper to run the query with LIMIT and then a separate SELECT COUNT() for the same query, since COUNT() can make use of optimizations that can't be done when searching for the entire result set (e.g. filesort can be skipped for COUNT(*), whereas with CALC_FOUND_ROWS, we must disable some filesort optimizations to guarantee the right result)

More importantly, it has very unclear semantics in a number of situations. In particular, when a query has multiple query blocks (e.g. with UNION), there's simply no way to calculate the number of “would-have-been” rows at the same time as producing a valid query. As the iterator executor is progressing towards these kinds of queries, it is genuinely difficult to try to retain the same semantics. Furthermore, if there are multiple LIMITs in the query (e.g. for derived tables), it's not necessarily clear to which of them SQL_CALC_FOUND_ROWS should refer to. Thus, such nontrivial queries will necessarily get different semantics in the iterator executor compared to what they had before.

Finally, most of the use cases where SQL_CALC_FOUND_ROWS would seem useful should simply be solved by other mechanisms than LIMIT/OFFSET. E.g., a phone book should be paginated by letter (both in terms of UX and in terms of index use), not by record number. Discussions are increasingly infinite-scroll ordered by date (again allowing index use), not by paginated by post number. And so on.

Another super clear way of doing this could be as follows:

let modifiedString = originalString
   .split('').reverse().join('')
   .replace('_', '')
   .split('').reverse().join('')

COUNTIF function will only count cells that contain numbers in your specified range.

COUNTA(range) will count all values in the list of arguments. Text entries and numbers are counted, even when they contain an empty string of length 0.

Example: Function in A7 =COUNTA(A1:A6)

Range:

A1 a

A2 b

A3 banana

A4 42

A5

A6

A7 4 -> result

Google spreadsheet function list contains a list of all available functions for future reference https://support.google.com/drive/table/25273?hl=en.

Change it to this:

var email = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;

This is a regular expression literal that is passed the i flag which means to be case insensitive.

Keep in mind that email address validation is hard (there is a 4 or 5 page regular expression at the end of Mastering Regular Expressions demonstrating this) and your expression certainly will not capture all valid e-mail addresses.

Why not just add Labels to the top of the Listbox and if changes are needed, the only thing you need to programmatically change are the labels.

I had a similar problem running SciPy on my computer. There are two ways to fix this problem: 1. Yes you do need to cd into your python directory. 2. Sometimes you have to tell the computer explicitly what path to go through, you have to find the program you're using, open up the properties, and reroute the path it takes to run. 3. consult the manual: http://matplotlib.org/users/installing.html or http://www.scipy.org/install.html

the Scipy package is very finicky, and needs things spelled out in obnoxious detail.

The answer above caused me to jump through some hoops/gotchas, so just posting the cleaner code that worked for me:

$dt = new DateTime();
$dt->setTimezone(new DateTimeZone('America/New_York'));
$dt->setTimestamp(123456789);

echo $dt->format('F j, Y @ G:i');

data = pd.read_csv('your_dataset.tsv', delimiter = '\t', quoting = 3)

You can use a delimiter to separate data, quoting = 3 helps to clear quotes in datasst

try: gsub('\\$', '', '$5.00$')

For you to output foo {1, 2, 3} you have to do something like:

string t = "1, 2, 3";
string v = String.Format(" foo {{{0}}}", t);

To output a { you use {{ and to output a } you use }}.

or Now, you can also use c# string interpolation like this (feature available in C# 6.0)

Escaping Brackets: String Interpolation $(""). it is new feature in C# 6.0

var inVal = "1, 2, 3";
var outVal = $" foo {{{inVal}}}";
//Output will be:  foo {1, 2, 3}

If you're using Java 8

List<String> list = new ArrayList<>();

boolean containsSearchStr = list.stream().anyMatch("search_value"::equalsIgnoreCase);

External fragmentation
Total memory space is enough to satisfy a request or to reside a process in it, but it is not contiguous so it can not be used.

Internal fragmentation
Memory block assigned to process is bigger. Some portion of memory is left unused as it can not be used by another process.

As ultimately suggested by this other answer and it's comments on this page:

error: function(xhr, status, error) {
  var err = JSON.parse(xhr.responseText);
  alert(err.Message);
}

1. Close Android Studio (if Android Studio is running)
2. Run Genymotion as administrator

that's all! simple.

If you wish to set focus on particular element, you can use below approach.

1. Create a service called focus.

   angular.module('application')
   .factory('focus', function ($timeout, $window) {
       return function (id) {
           $timeout(function () {
               var element = $window.document.getElementById(id);
               if (element)
                   element.focus();
           });
       };
   });
   

2. Inject it into the controller from where you wish to call.

3. Call this service.

Try to run

npm i node-sass@latest

Having a table with a foreign key to itself does make sense to me.

You can then use a common table expression in SQL or the connect by prior statement in Oracle to build your tree.

/^[a-zA-Z]*$/

Change the * to + if you don't want to allow empty matches.

References:

Character classes ([...]), Anchors (^ and $), Repetition (+, *)

The / are just delimiters, it denotes the start and the end of the regex. One use of this is now you can use modifiers on it.

C++ does not provide any way to do it directly. It would entirely depend on what platforms and libraries that you have.

At worst case, you can use the boost::asio library to establish a TCP connection, send the HTTP headers (RFC 2616), and parse the responses directly. Looking at your application needs, this is simple enough to do.

i use dumpsys to catch if app is crashed and process is still active. situation i used it is to find about remote machine app is crashed or not.

dumpsys | grep myapp | grep "Application Error" 

or

adb shell dumpsys | grep myapp | grep Error

or anything that helps...etc

if app is not running you will get nothing as result. When app is stoped messsage is shown on screen by android, process is still active and if you check via "ps" command or anything else, you will see process state is not showing any error or crash meaning. But when you click button to close message, app process will cleaned from process list. so catching crash state without any code in application is hard to find. but dumpsys helps you.

With Log4j2, this can be achieved using the following utility method added to your code.

private static void setLogLevel() {
  if (Boolean.getBoolean("log4j.debug")) {
    Configurator.setLevel(System.getProperty("log4j.logger"), Level.DEBUG);
  }
}

You need these imports

import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.core.config.Configurator;

Now invoke the setLogLevel method in your main() or whereever appropriate and pass command line params -Dlog4j.logger=com.mypackage.Thingie and -Dlog4j.debug=true.

I wouldn't expect vertical tabs to need different Javascript from horizontal tabs. The only thing that would be different is the CSS for presenting the tabs and content on the page. JS for tabs generally does no more than show/hide/maybe load content.

If you don't have cocoa pods installed you need to:

sudo gem install cocoapods

Then run:

cd /ios
pod install

delete the build folder in ios folder of your react native project

run:

react-native run-ios

if error persists:

• delete build folder again
• open the /ios folder in Xcode
• navigate File -> Project Settings -> Build System -> change (Shared workspace settings and Per-User workspace settings): Build System -> Legacy Build System

You can use ajax and jquery to solve this problem:

<script>
    function getData() {
        $.ajax({
            url : "/urlpattern",
            type : "post",
            success : function(data) {
                alert("success");
            } 
        });
    }
</script>
<form method="POST">
    <button name="data" type="button" onclick="getData()">Click</button>
</form>

The HTML5 replaceState is the answer, as already mentioned by Vivart and geo1701. However it is not supported in all browsers/versions. History.js wraps HTML5 state features and provides additional support for HTML4 browsers.

There is a very simple solution using dense_rank()

dense_rank() over (partition by [Mth] order by [UserAccountKey]) 
+ dense_rank() over (partition by [Mth] order by [UserAccountKey] desc) 
- 1

This will give you exactly what you were asking for: The number of distinct UserAccountKeys within each month.

For ASP.NET Core You can use asp-route-* attribute:

<form asp-action="Login" asp-route-previous="@Model.ReturnUrl">

An example: Imagine that you have a Vehicle Controller with actions

Index

Details

Edit

and you can edit any vehicle from Index or from Details, so if you clicked edit from index you must return to index after edit and if you clicked edit from details you must return to details after edit.

//In your viewmodel add the ReturnUrl Property
public class VehicleViewModel
{
     ..............
     ..............
     public string ReturnUrl {get;set;}
}



Details.cshtml
<a asp-action="Edit" asp-route-previous="Details" asp-route-id="@Model.CarId">Edit</a>

Index.cshtml
<a asp-action="Edit" asp-route-previous="Index" asp-route-id="@item.CarId">Edit</a>

Edit.cshtml
<form asp-action="Edit" asp-route-previous="@Model.ReturnUrl" class="form-horizontal">
        <div class="box-footer">
            <a asp-action="@Model.ReturnUrl" class="btn btn-default">Back to List</a>
            <button type="submit" value="Save" class="btn btn-warning pull-right">Save</button>
        </div>
    </form>

In your controller:

// GET: Vehicle/Edit/5
    public ActionResult Edit(int id,string previous)
    {
            var model = this.UnitOfWork.CarsRepository.GetAllByCarId(id).FirstOrDefault();
            var viewModel = this.Mapper.Map<VehicleViewModel>(model);//if you using automapper
    //or by this code if you are not use automapper
    var viewModel = new VehicleViewModel();

    if (!string.IsNullOrWhiteSpace(previous)
                viewModel.ReturnUrl = previous;
            else
                viewModel.ReturnUrl = "Index";
            return View(viewModel);
        }



[HttpPost]
    public IActionResult Edit(VehicleViewModel model, string previous)
    {
            if (!string.IsNullOrWhiteSpace(previous))
                model.ReturnUrl = previous;
            else
                model.ReturnUrl = "Index";
            ............. 
            .............
            return RedirectToAction(model.ReturnUrl);
    }

npm i html-react-parser;

import Parser from 'html-react-parser';

<td>{Parser(this.state.archyves)}</td>

You can achieve this by using simply as a returns set of records using return query.

CREATE OR REPLACE FUNCTION schemaName.get_two_users_from_school(schoolid bigint)
 RETURNS SETOF record
 LANGUAGE plpgsql
AS $function$
begin

 return query
  SELECT id, name FROM schemaName.user where school_id = schoolid;

end;
$function$

And call this function as : select * from schemaName.get_two_users_from_school(schoolid) as x(a bigint, b varchar);

For me WORKSPACE was a valid property of the pipeline itself. So when I handed over this to a Groovy method as parameter context from the pipeline script itself, I was able to access the correct value using "... ${context.WORKSPACE} ..."

(on Jenkins 2.222.3, Build Pipeline Plugin 1.5.8, Pipeline: Nodes and Processes 2.35)

With jQuery (and without FormData API) you can use something like this:

function readFile(file){
   var loader = new FileReader();
   var def = $.Deferred(), promise = def.promise();

   //--- provide classic deferred interface
   loader.onload = function (e) { def.resolve(e.target.result); };
   loader.onprogress = loader.onloadstart = function (e) { def.notify(e); };
   loader.onerror = loader.onabort = function (e) { def.reject(e); };
   promise.abort = function () { return loader.abort.apply(loader, arguments); };

   loader.readAsBinaryString(file);

   return promise;
}

function upload(url, data){
    var def = $.Deferred(), promise = def.promise();
    var mul = buildMultipart(data);
    var req = $.ajax({
        url: url,
        data: mul.data,
        processData: false,
        type: "post",
        async: true,
        contentType: "multipart/form-data; boundary="+mul.bound,
        xhr: function() {
            var xhr = jQuery.ajaxSettings.xhr();
            if (xhr.upload) {

                xhr.upload.addEventListener('progress', function(event) {
                    var percent = 0;
                    var position = event.loaded || event.position; /*event.position is deprecated*/
                    var total = event.total;
                    if (event.lengthComputable) {
                        percent = Math.ceil(position / total * 100);
                        def.notify(percent);
                    }                    
                }, false);
            }
            return xhr;
        }
    });
    req.done(function(){ def.resolve.apply(def, arguments); })
       .fail(function(){ def.reject.apply(def, arguments); });

    promise.abort = function(){ return req.abort.apply(req, arguments); }

    return promise;
}

var buildMultipart = function(data){
    var key, crunks = [], bound = false;
    while (!bound) {
        bound = $.md5 ? $.md5(new Date().valueOf()) : (new Date().valueOf());
        for (key in data) if (~data[key].indexOf(bound)) { bound = false; continue; }
    }

    for (var key = 0, l = data.length; key < l; key++){
        if (typeof(data[key].value) !== "string") {
            crunks.push("--"+bound+"\r\n"+
                "Content-Disposition: form-data; name=\""+data[key].name+"\"; filename=\""+data[key].value[1]+"\"\r\n"+
                "Content-Type: application/octet-stream\r\n"+
                "Content-Transfer-Encoding: binary\r\n\r\n"+
                data[key].value[0]);
        }else{
            crunks.push("--"+bound+"\r\n"+
                "Content-Disposition: form-data; name=\""+data[key].name+"\"\r\n\r\n"+
                data[key].value);
        }
    }

    return {
        bound: bound,
        data: crunks.join("\r\n")+"\r\n--"+bound+"--"
    };
};

//----------
//---------- On submit form:
var form = $("form");
var $file = form.find("#file");
readFile($file[0].files[0]).done(function(fileData){
   var formData = form.find(":input:not('#file')").serializeArray();
   formData.file = [fileData, $file[0].files[0].name];
   upload(form.attr("action"), formData).done(function(){ alert("successfully uploaded!"); });
});

With FormData API you just have to add all fields of your form to FormData object and send it via $.ajax({ url: url, data: formData, processData: false, contentType: false, type:"POST"})

Here is a short function you can use to diff two arrays. It implements the LCS algorithm:

function computeDiff($from, $to)
{
    $diffValues = array();
    $diffMask = array();

    $dm = array();
    $n1 = count($from);
    $n2 = count($to);

    for ($j = -1; $j < $n2; $j++) $dm[-1][$j] = 0;
    for ($i = -1; $i < $n1; $i++) $dm[$i][-1] = 0;
    for ($i = 0; $i < $n1; $i++)
    {
        for ($j = 0; $j < $n2; $j++)
        {
            if ($from[$i] == $to[$j])
            {
                $ad = $dm[$i - 1][$j - 1];
                $dm[$i][$j] = $ad + 1;
            }
            else
            {
                $a1 = $dm[$i - 1][$j];
                $a2 = $dm[$i][$j - 1];
                $dm[$i][$j] = max($a1, $a2);
            }
        }
    }

    $i = $n1 - 1;
    $j = $n2 - 1;
    while (($i > -1) || ($j > -1))
    {
        if ($j > -1)
        {
            if ($dm[$i][$j - 1] == $dm[$i][$j])
            {
                $diffValues[] = $to[$j];
                $diffMask[] = 1;
                $j--;  
                continue;              
            }
        }
        if ($i > -1)
        {
            if ($dm[$i - 1][$j] == $dm[$i][$j])
            {
                $diffValues[] = $from[$i];
                $diffMask[] = -1;
                $i--;
                continue;              
            }
        }
        {
            $diffValues[] = $from[$i];
            $diffMask[] = 0;
            $i--;
            $j--;
        }
    }    

    $diffValues = array_reverse($diffValues);
    $diffMask = array_reverse($diffMask);

    return array('values' => $diffValues, 'mask' => $diffMask);
}

It generates two arrays:

• values array: a list of elements as they appear in the diff.
• mask array: contains numbers. 0: unchanged, -1: removed, 1: added.

If you populate an array with characters, it can be used to compute inline difference. Now just a single step to highlight the differences:

function diffline($line1, $line2)
{
    $diff = computeDiff(str_split($line1), str_split($line2));
    $diffval = $diff['values'];
    $diffmask = $diff['mask'];

    $n = count($diffval);
    $pmc = 0;
    $result = '';
    for ($i = 0; $i < $n; $i++)
    {
        $mc = $diffmask[$i];
        if ($mc != $pmc)
        {
            switch ($pmc)
            {
                case -1: $result .= '</del>'; break;
                case 1: $result .= '</ins>'; break;
            }
            switch ($mc)
            {
                case -1: $result .= '<del>'; break;
                case 1: $result .= '<ins>'; break;
            }
        }
        $result .= $diffval[$i];

        $pmc = $mc;
    }
    switch ($pmc)
    {
        case -1: $result .= '</del>'; break;
        case 1: $result .= '</ins>'; break;
    }

    return $result;
}

Eg.:

echo diffline('StackOverflow', 'ServerFault')

Will output:

S<del>tackO</del><ins>er</ins>ver<del>f</del><ins>Fau</ins>l<del>ow</del><ins>t</ins> 

StackOerverfFaulowt

Additional notes:

• The diff matrix requires (m+1)*(n+1) elements. So you can run into out of memory errors if you try to diff long sequences. In this case diff larger chunks (eg. lines) first, then diff their contents in a second pass.
• The algorithm can be improved if you trim the matching elements from the beginning and the end, then run the algorithm on the differing middle only. A latter (more bloated) version contains these modifications too.

The way I like to do this is using the %x literal, which makes it easy (and readable!) to use quotes in a command, like so:

directorylist = %x[find . -name '*test.rb' | sort]

Which, in this case, will populate file list with all test files under the current directory, which you can process as expected:

directorylist.each do |filename|
  filename.chomp!
  # work with file
end

The question is dead but still knowing one more way doesn't hurt:

my_list = [ (old1, new1), (old2, new2), (old3, new3), ... (oldN, newN)]

for first,*args in my_list:
    if first == Value:
        PAIR_FOUND = True
        MATCHING_VALUE = args
        break

String.prototype.hashCode = function() {
  var hash = 0, i, chr;
  if (this.length === 0) return hash;
  for (i = 0; i < this.length; i++) {
    chr   = this.charCodeAt(i);
    hash  = ((hash << 5) - hash) + chr;
    hash |= 0; // Convert to 32bit integer
  }
  return hash;
};

Source: http://werxltd.com/wp/2010/05/13/javascript-implementation-of-javas-string-hashcode-method/

I see this is a little old, but there might be a better solution here.

When you want a string, but you want the string to only match certain values, you can use enums.

For example:

enum Fruit {
    Orange = "Orange",
    Apple  = "Apple",
    Banana = "Banana"
}

let myFruit: Fruit = Fruit.Banana;

Now you'll know that no matter what, myFruit will always be the string "Banana" (Or whatever other enumerable value you choose). This is useful for many things, whether it be grouping similar values like this, or mapping user-friendly values to machine-friendly values, all while enforcing and restricting the values the compiler will allow.

[function.fopen]: failed to open stream

If you have access to your php.ini file, try enabling Fopen. Find the respective line and set it to be "on": & if in wp e.g localhost/wordpress/function.fopen in the php.ini :

allow_url_fopen = off
should bee this 
allow_url_fopen = On

And add this line below it:
allow_url_include = off
should bee this 
allow_url_include = on

Create a small function and use it anywhere

public SqlConnection con = "Your connection string"; 
public void gridviewUpdate()
{
    con.Open();
    string select = "SELECT * from table_name";
    SqlDataAdapter da = new SqlDataAdapter(select, con);
    DataSet ds = new DataSet();
    da.Fill(ds, "table_name");
    datagridview.DataSource = ds;
    datagridview.DataMember = "table_name";
    con.Close();
}

You don't want multipart, but a "plain" POST request (with Content-Type: application/json) instead. Here is all you need:

var request = require('request');

var requestData = {
  request: {
    slice: [
      {
        origin: "ZRH",
        destination: "DUS",
        date: "2014-12-02"
      }
    ],
    passengers: {
      adultCount: 1,
      infantInLapCount: 0,
      infantInSeatCount: 0,
      childCount: 0,
      seniorCount: 0
    },
    solutions: 2,
    refundable: false
  }
};

request('https://www.googleapis.com/qpxExpress/v1/trips/search?key=myApiKey',
        { json: true, body: requestData },
        function(err, res, body) {
  // `body` is a js object if request was successful
});

7zip (7za) can be used for adding/updating files/directories nicely:

Example: Replacing (regardless of file date) the MANIFEST.MF file in a JAR file. The /source/META-INF directory contains the MANIFEST.MF file that you want to put into the jar (zip):

7za a /tmp/file.jar /source/META-INF/

Only update (does not replace the target if the source is older)

7za u /tmp/file.jar /source/META-INF/

swift 3

    let cancelBarButton = UIBarButtonItem(title: "Cancel", style: .done, target: self, action: #selector(cancelPressed(_:)))
    cancelBarButton.setTitleTextAttributes( [NSFontAttributeName : UIFont.cancelBarButtonFont(),
                                                          NSForegroundColorAttributeName : UIColor.white], for: .normal)
    self.navigationItem.leftBarButtonItem = cancelBarButton


    func cancelPressed(_ sender: UIBarButtonItem ) {
        self.dismiss(animated: true, completion: nil)
    }

To handle spaces, @, and other unsafe characters in arbitrary locations in the url path, Use Uri.Builder in combination with a local instance of URL as I have described here:

private Uri.Builder builder;
public Uri getUriFromUrl(String thisUrl) {
    URL url = new URL(thisUrl);
    builder =  new Uri.Builder()
                            .scheme(url.getProtocol())
                            .authority(url.getAuthority())
                            .appendPath(url.getPath());
    return builder.build();
}

I encountered this problem too. If you want the activity that handles permissions not in the history/recents, then you will be tempted to change your AndroidManifest.xml entry.

If you set the activity that you call requestPermissions or AppCompatActivity.requestPermissions with

android:noHistory="true"
android:excludeFromRecents="true"

in your AndroidManifest.xml then onRequestPermissionsResult() will not be called. This is true if your Activity is derived from Activity or AppCompatActivity.

This can be fixed by removing both flags from 'AndroidManifest.xml' and finishing your activity with finishAndRemoveTask() instead.

I would just do:

private static Timer timer;
 private static void Main()
 {
   timer = new Timer(_ => OnCallBack(), null, 1000 * 10,Timeout.Infinite); //in 10 seconds
   Console.ReadLine();
 }

  private static void OnCallBack()
  {
    timer.Dispose();
    Thread.Sleep(3000); //doing some long operation
    timer = new Timer(_ => OnCallBack(), null, 1000 * 10,Timeout.Infinite); //in 10 seconds
  }

And ignore the period parameter, since you're attempting to control the periodicy yourself.

Your original code is running as fast as possible, since you keep specifying 0 for the dueTime parameter. From Timer.Change:

If dueTime is zero (0), the callback method is invoked immediately.

psql -U username -d mydatabase -c 'SELECT * FROM mytable'

If you're new to postgresql and unfamiliar with using the command line tool psql then there is some confusing behaviour you should be aware of when you've entered an interactive session.

For example, initiate an interactive session:

psql -U username mydatabase 
mydatabase=#

At this point you can enter a query directly but you must remember to terminate the query with a semicolon ;

For example:

mydatabase=# SELECT * FROM mytable;

If you forget the semicolon then when you hit enter you will get nothing on your return line because psql will be assuming that you have not finished entering your query. This can lead to all kinds of confusion. For example, if you re-enter the same query you will have most likely create a syntax error.

As an experiment, try typing any garble you want at the psql prompt then hit enter. psql will silently provide you with a new line. If you enter a semicolon on that new line and then hit enter, then you will receive the ERROR:

mydatabase=# asdfs 
mydatabase=# ;  
ERROR:  syntax error at or near "asdfs"
LINE 1: asdfs
    ^

The rule of thumb is: If you received no response from psql but you were expecting at least SOMETHING, then you forgot the semicolon ;

Also make sure your code doesn't have true for setBlockNetworkLoads

webView.getSettings().setBlockNetworkLoads (false);

Debian 8 Jessie
This works sudo apt-get install wkhtmltopdf

Adding to Mike McAllister's pretty-thorough answer...

Materialized views can only be set to refresh automatically through the database detecting changes when the view query is considered simple by the compiler. If it's considered too complex, it won't be able to set up what are essentially internal triggers to track changes in the source tables to only update the changed rows in the mview table.

When you create a materialized view, you'll find that Oracle creates both the mview and as a table with the same name, which can make things confusing.

It worked for me can try with this, hope it will be helpful . Let me know if any concern .

Date startDate = java.util.Calendar.getInstance().getTime(); //set your start time
Date endDate = java.util.Calendar.getInstance().getTime(); // set  your end time

long duration = endDate.getTime() - startDate.getTime();


long diffInSeconds = TimeUnit.MILLISECONDS.toSeconds(duration);
long diffInMinutes = TimeUnit.MILLISECONDS.toMinutes(duration);
long diffInHours = TimeUnit.MILLISECONDS.toHours(duration);
long diffInDays = TimeUnit.MILLISECONDS.toDays(duration);

Toast.makeText(MainActivity.this, "Diff"
        + duration + diffInDays + diffInHours + diffInMinutes + diffInSeconds, Toast.LENGTH_SHORT).show(); **// Toast message for android .**

System.out.println("Diff" + duration + diffInDays + diffInHours + diffInMinutes + diffInSeconds); **// Print console message for Java .**

There are plenty of built in python modules that whould help with this. For example urllib and htmllib.

The problem will be simpler if you change the way you're approaching it. You say you want to "fill some forms, click submit button, send the data back to server, recieve the response", which sounds like a four stage process.

In fact, what you need to do is post some data to a webserver and get a response.

This is as simple as:

>>> import urllib
>>> params = urllib.urlencode({'spam': 1, 'eggs': 2, 'bacon': 0})
>>> f = urllib.urlopen("http://www.musi-cal.com/cgi-bin/query", params)
>>> print f.read()

(example taken from the urllib docs).

What you do with the response depends on how complex the HTML is and what you want to do with it. You might get away with parsing it using a regular expression or two, or you can use the htmllib.HTMLParser class, or maybe a higher level more flexible parser like Beautiful Soup.

If you really need a has-next functionality (because you're just faithfully transcribing an algorithm from a reference implementation in Java, say, or because you're writing a prototype that will need to be easily transcribed to Java when it's finished), it's easy to obtain it with a little wrapper class. For example:

class hn_wrapper(object):
  def __init__(self, it):
    self.it = iter(it)
    self._hasnext = None
  def __iter__(self): return self
  def next(self):
    if self._hasnext:
      result = self._thenext
    else:
      result = next(self.it)
    self._hasnext = None
    return result
  def hasnext(self):
    if self._hasnext is None:
      try: self._thenext = next(self.it)
      except StopIteration: self._hasnext = False
      else: self._hasnext = True
    return self._hasnext

now something like

x = hn_wrapper('ciao')
while x.hasnext(): print next(x)

emits

c
i
a
o

as required.

Note that the use of next(sel.it) as a built-in requires Python 2.6 or better; if you're using an older version of Python, use self.it.next() instead (and similarly for next(x) in the example usage). [[You might reasonably think this note is redundant, since Python 2.6 has been around for over a year now -- but more often than not when I use Python 2.6 features in a response, some commenter or other feels duty-bound to point out that they are 2.6 features, thus I'm trying to forestall such comments for once;-)]]

Here's an example

// in the service
getVehicles(){
    return Observable.interval(2200).map(i=> [{name: 'car 1'},{name: 'car 2'}])
}

// in the controller
vehicles: Observable<Array<any>>
ngOnInit() {
    this.vehicles = this._vehicleService.getVehicles();
}

// in template
<div *ngFor='let vehicle of vehicles | async'>
    {{vehicle.name}}
</div>

http://jsfiddle.net/jwB2Y/123/

The following CSS class force the label text to flow inline and get clipped if its length is more than max-length of the label.

.inline-label { 
    white-space: nowrap;
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    float:left;     
    }

HTML:

<div>
    <label for="id1" class="inline-label">This is the dummy text i want to display::</label>
    <input type="text" id="id1"/>
</div>

The proper data type for "2010-12-20 00:00:00.0000000" value is DATETIME2(7) / DT_DBTIME2 ().

But used data type for CYCLE_DATE field is DATETIME - DT_DATE. This means milliseconds precision with accuracy down to every third millisecond (yyyy-mm-ddThh:mi:ss.mmL where L can be 0,3 or 7).

The solution is to change CYCLE_DATE date type to DATETIME2 - DT_DBTIME2.

public int getAge(String birthdate, String today){
    // birthdate = "1986-02-22"
    // today = "2014-09-16"

    // String class has a split method for splitting a string
    // split(<delimiter>)
    // birth[0] = 1986 as string
    // birth[1] = 02 as string
    // birth[2] = 22 as string
    // now[0] = 2014 as string
    // now[1] = 09 as string
    // now[2] = 16 as string
    // **birth** and **now** arrays are automatically contains 3 elements 
    // split method here returns 3 elements because of yyyy-MM-dd value
    String birth[] = birthdate.split("-");
    String now[] = today.split("-");
    int age = 0;

    // let us convert string values into integer values
    // with the use of Integer.parseInt(<string>)
    int ybirth = Integer.parseInt(birth[0]);
    int mbirth = Integer.parseInt(birth[1]);
    int dbirth = Integer.parseInt(birth[2]);

    int ynow = Integer.parseInt(now[0]);
    int mnow = Integer.parseInt(now[1]);
    int dnow = Integer.parseInt(now[2]);

    if(ybirth < ynow){ // has age if birth year is lesser than current year
        age = ynow - ybirth; // let us get the interval of birth year and current year
        if(mbirth == mnow){ // when birth month comes, it's ok to have age = ynow - ybirth if
            if(dbirth > dnow) // birth day is coming. need to subtract 1 from age. not yet a bday
                age--;
        }else if(mbirth > mnow){ age--; } // birth month is comming. need to subtract 1 from age            
    }

    return age;
}

Hope this helps :)

begins the session, you need to say this at the top of a page or before you call session code

 session_start(); 

put a user id in the session to track who is logged in

 $_SESSION['user'] = $user_id;

Check if someone is logged in

 if (isset($_SESSION['user'])) {
   // logged in
 } else {
   // not logged in
 }

Find the logged in user ID

$_SESSION['user']

So on your page

 <?php
 session_start();


 if (isset($_SESSION['user'])) {
 ?>
   logged in HTML and code here
 <?php

 } else {
   ?>
   Not logged in HTML and code here
   <?php
 }

You can also use the shell Path APIs PathFindFileName, PathRemoveExtension. Probably worse than _splitpath for this particular problem, but those APIs are very useful for all kinds of path parsing jobs and they take UNC paths, forward slashes and other weird stuff into account.

wstring filename = L"C:\\MyDirectory\\MyFile.bat";
wchar_t* filepart = PathFindFileName(filename.c_str());
PathRemoveExtension(filepart); 

http://msdn.microsoft.com/en-us/library/windows/desktop/bb773589(v=vs.85).aspx

The drawback is that you have to link to shlwapi.lib, but I'm not really sure why that's a drawback.

I was experiencing a similar problem running (and trying to debug) two different Django applications on the same machine.

I was running them with these commands:

./manage.py runserver 8000
./manage.py runserver 8001

When I did login in the first one and then in the second one I always got logged out the first one and viceversa.

I added this on my /etc/hosts

127.0.0.1    app1
127.0.0.1    app2

Then I started the two apps with these commands:

./manage.py runserver app1:8000
./manage.py runserver app2:8001

Problem solved :)

Is Powershell an option?

Start Powershell:

powershell

Create the VPN Connection: Add-VpnConnection

Add-VpnConnection [-Name] <string> [-ServerAddress] <string> [-TunnelType <string> {Pptp | L2tp | Sstp | Ikev2 | Automatic}] [-EncryptionLevel <string> {NoEncryption | Optional | Required | Maximum}] [-AuthenticationMethod <string[]> {Pap | Chap | MSChapv2 | Eap}] [-SplitTunneling] [-AllUserConnection] [-L2tpPsk <string>] [-RememberCredential] [-UseWinlogonCredential] [-EapConfigXmlStream <xml>] [-Force] [-PassThru] [-WhatIf] [-Confirm] 

Edit VPN connections: Set-VpnConnection

Set-VpnConnection [-Name] <string> [[-ServerAddress] <string>] [-TunnelType <string> {Pptp | L2tp | Sstp | Ikev2 | Automatic}] [-EncryptionLevel <string> {NoEncryption | Optional | Required | Maximum}] [-AuthenticationMethod <string[]> {Pap | Chap | MSChapv2 | Eap}] [-SplitTunneling <bool>] [-AllUserConnection] [-L2tpPsk <string>] [-RememberCredential <bool>] [-UseWinlogonCredential <bool>] [-EapConfigXmlStream <xml>] [-PassThru] [-Force] [-WhatIf] [-Confirm]

Lookup VPN Connections: Get-VpnConnection

Get-VpnConnection [[-Name] <string[]>] [-AllUserConnection]

Connect: rasdial [connectionName]

rasdial connectionname [username [password | \]] [/domain:domain*] [/phone:phonenumber] [/callback:callbacknumber] [/phonebook:phonebookpath] [/prefixsuffix**]

You can manage your VPN connections with the powershell commands above, and simply use the connection name to connect via rasdial.

The results of Get-VpnConnection can be a little verbose. This can be simplified with a simple Select-Object filter:

Get-VpnConnection | Select-Object -Property Name

More information can be found here:

• Manage VPN Connections in Windows 8 by Using Windows PowerShell
• Rasdial
• Select-Object

The solution

svn status | grep ^? | sed 's/?    //' | xargs svn add

does not work with whitespaces. Instead one can use

svn status | grep ^? | sed 's/^?       //' | xargs -I fn svn add "fn"

(seems like the number of leading blanks is different on my system -- just adjust it).

What you are looking for is called covariant type parameters. This means that if one type of object can be substituted for another in a method (for instance, Animal can be replaced with Dog), the same applies to expressions using those objects (so List<Animal> could be replaced with List<Dog>). The problem is that covariance is not safe for mutable lists in general. Suppose you have a List<Dog>, and it is being used as a List<Animal>. What happens when you try to add a Cat to this List<Animal> which is really a List<Dog>? Automatically allowing type parameters to be covariant breaks the type system.

It would be useful to add syntax to allow type parameters to be specified as covariant, which avoids the ? extends Foo in method declarations, but that does add additional complexity.

You can use Date.getTime() function, or the Date object itself which when divided returns the time in milliseconds.

var d = new Date();

d/1000
> 1510329641.84

d.getTime()/1000
> 1510329641.84

Try this code:

function GetTextRectToPixels(obj)
{
var tmpRect = obj.getBoundingClientRect();
obj.style.width = "auto"; 
obj.style.height = "auto"; 
var Ret = obj.getBoundingClientRect(); 
obj.style.width = (tmpRect.right - tmpRect.left).toString() + "px";
obj.style.height = (tmpRect.bottom - tmpRect.top).toString() + "px"; 
return Ret;
}

An elegant solution with dplyr would be:

df %>%
  # recode empty strings "" by NAs
  na_if("") %>%
  # remove NAs
  na.omit

Does it have to be gray? You could just set the opacity of the image lower (to dull it). Alternatively, you could create a <div> overlay and set that to be gray (change the alpha to get the effect).

• html:

  <div id="wrapper">
      <img id="myImage" src="something.jpg" />
  </div>
  

• css:

  #myImage {
      opacity: 0.4;
      filter: alpha(opacity=40); /* msie */
  }
  
  /* or */
  
  #wrapper {
      opacity: 0.4;
      filter: alpha(opacity=40); /* msie */
      background-color: #000;
  }
  

If you want use RegEx in .NET,

Regex rx = new Regex(@"^([\w]+)(\-)*");
var match = rx.Match("thisis-thefirst");
var text = match.Groups[1].Value;
Assert.AreEqual("thisis", text);

I'm using a old version of Hibernate (3.3.0) with a newest version of OpenEJB (4.6.0). My solution was:

EntityManagerImpl entityManager = (EntityManagerImpl)em.getDelegate();
Session session = entityManager.getSession();
Connection connection = session.connection();
Statement statement = null;
try {
    statement = connection.createStatement();
    statement.execute(sql);
    connection.commit();
} catch (SQLException e) {
    throw new RuntimeException(e);
}

I had an error after that:

Commit can not be set while enrolled in a transaction

Because this code above was inside a EJB Controller (you can't commit inside a transaction). I annotated the method with @TransactionAttribute(value = TransactionAttributeType.NOT_SUPPORTED) and the problem was gone.

If you're going to downvote this answer

I wrote this a few months prior to the inclusion of git-credential in TortoiseGit. Given the number of large security holes found in the last few years and how much I've learned about network security, I would HIGHLY recommend you use a unique (minimum 2048-bit RSA) SSH key for every server you connect to.

The below syntax is still available, though there are far better tools available today like git-credential that the accepted answer tells you how to use. Do that instead.

Try changing the remote URL to https://[email protected]/username/repo.git where username is your github username and repo is the name of your repository.

If you also want to store your password (not recommended), the URL would look like this: https://username:[email protected]/username/repo.git.

There's also another way to store the password from this github help article: https://help.github.com/articles/set-up-git#password-caching

If you want a one-liner from numpy and aren't too concerned about performance, try:

np.sum(np.diag(the_array,1),0)[:-1]

Explanation: np.diag(the_array,1) creates a matrix with your array one-off the diagonal, np.sum(...,0) sums the matrix column-wise, and ...[:-1] takes the elements that would correspond to the size of the original array. Playing around with the 1 and :-1 as parameters can give you shifts in different directions.

You can use simple linq query as follow to select all records from sql table

var qry = ent.tableName.Select(x => x).ToList();

If you're using Java 8 or up, you can use a library I just released: https://github.com/robtimus/try-parse. It has support for int, long and boolean that doesn't rely on catching exceptions. Unlike Guava's Ints.tryParse it returns OptionalInt / OptionalLong / Optional, much like in https://stackoverflow.com/a/38451745/1180351 but more efficient.

You can employ the use of data in jQuery and catch all of the events which then tests it against it's last value (untested):

$(document).ready(function() {  
    $("#fieldId").bind("keyup keydown keypress change blur", function() {
        if ($(this).val() != jQuery.data(this, "lastvalue") {
         alert("changed");
        }
        jQuery.data(this, "lastvalue", $(this).val());
    });
});

This would work pretty good against a long list of items too. Using jQuery.data means you don't have to create a javascript variable to track the value. You could do $("#fieldId1, #fieldId2, #fieldId3, #fieldId14, etc") to track many fields.

UPDATE: Added blur to the bind list.

Here's an example using underscore functions.

var exampleArray = [{name: 'moe', age: 40}, {name: 'larry', age: 50}, {name: 'curly', age: 60}];
var finalArray = _.compact(_.pluck(exampleArray,"name")).join(",");

Final output would be "moe,larry,curly"

In my case is a cookie-related issue, I had many cookies with value extremely big, and that was causing the problem.

You can replicate this issue here on stackoverflow.com, just open the console and type this:

[ ...Array(5) ].forEach((i, idx) => {
    document.cookie = `stackoverflow_cookie${idx}=${'a'.repeat(4000)}`;
});

What is that?

I am creating 5 cookies with a string of length or value of 4000 bytes; then reload the page and you will see the same issue.

I tried it on google.com and you'll get the error but they automatically clear the cookies for you, which is a nice fallback to start fresh.

There was a Python enhancement proposal PEP 299 which aimed to replace if __name__ == '__main__': idiom with def __main__:, but it was rejected. It's still a good read to know what to keep in mind when using if __name__ = '__main__':.

There are several ways to intercept the initialization process in Spring. If you have to initialize all beans and autowire/inject them there are at least two ways that I know of that will ensure this. I have only testet the second one but I belive both work the same.

If you are using @Bean you can reference by initMethod, like this.

@Configuration
public class BeanConfiguration {

  @Bean(initMethod="init")
  public BeanA beanA() {
    return new BeanA();
  }
}

public class BeanA {

  // method to be initialized after context is ready
  public void init() {
  }

} 

If you are using @Component you can annotate with @EventListener like this.

@Component
public class BeanB {

  @EventListener
  public void onApplicationEvent(ContextRefreshedEvent event) {
  }
}

In my case I have a legacy system where I am now taking use of IoC/DI where Spring Boot is the choosen framework. The old system brings many circular dependencies to the table and I therefore must use setter-dependency a lot. That gave me some headaches since I could not trust @PostConstruct since autowiring/injection by setter was not yet done. The order is constructor, @PostConstruct then autowired setters. I solved it with @EventListener annotation which wil run last and at the "same" time for all beans. The example shows implementation of InitializingBean aswell.

I have two classes (@Component) with dependency to each other. The classes looks the same for the purpose of this example displaying only one of them.

@Component
public class BeanA implements InitializingBean {
  private BeanB beanB;

  public BeanA() {
    log.debug("Created...");
  }

  @PostConstruct
  private void postConstruct() {
    log.debug("@PostConstruct");
  }

  @Autowired
  public void setBeanB(BeanB beanB) {
    log.debug("@Autowired beanB");
    this.beanB = beanB;
  }

  @Override
  public void afterPropertiesSet() throws Exception {
    log.debug("afterPropertiesSet()");
  }

  @EventListener
  public void onApplicationEvent(ContextRefreshedEvent event) {
    log.debug("@EventListener");
  } 
}

This is the log output showing the order of the calls when the container starts.

2018-11-30 18:29:30.504 DEBUG 3624 --- [           main] com.example.demo.BeanA                   : Created...
2018-11-30 18:29:30.509 DEBUG 3624 --- [           main] com.example.demo.BeanB                   : Created...
2018-11-30 18:29:30.517 DEBUG 3624 --- [           main] com.example.demo.BeanB                   : @Autowired beanA
2018-11-30 18:29:30.518 DEBUG 3624 --- [           main] com.example.demo.BeanB                   : @PostConstruct
2018-11-30 18:29:30.518 DEBUG 3624 --- [           main] com.example.demo.BeanB                   : afterPropertiesSet()
2018-11-30 18:29:30.518 DEBUG 3624 --- [           main] com.example.demo.BeanA                   : @Autowired beanB
2018-11-30 18:29:30.518 DEBUG 3624 --- [           main] com.example.demo.BeanA                   : @PostConstruct
2018-11-30 18:29:30.518 DEBUG 3624 --- [           main] com.example.demo.BeanA                   : afterPropertiesSet()
2018-11-30 18:29:30.607 DEBUG 3624 --- [           main] com.example.demo.BeanA                   : @EventListener
2018-11-30 18:29:30.607 DEBUG 3624 --- [           main] com.example.demo.BeanB                   : @EventListener

As you can see @EventListener is run last after everything is ready and configured.

kubectl exec -it POD_NAME -c CONTAINER_NAME bash - then kill 1

Assuming the container is run as root which is not recommended.

In my case when I changed the application config, I had to reboot the container which was used in a sidecar pattern, I would kill the PID for the spring boot application which is owned by the docker user.

This error can also be the result of not having the line,

FIELDS SPECIFIED BY ','

(if you're using commas to separate the fields) in your MySQL syntax, as described in this page of the MySQL docs.

RTSP (actually RTP) can be used for streaming video, but also many other types of media including live presentations. Rtsp is just the protocol used to setup the RTP session.

For all the details you can check out my open source RTSP Server implementation on the following address: https://net7mma.codeplex.com/

Or my article @ http://www.codeproject.com/Articles/507218/Managed-Media-Aggregation-using-Rtsp-and-Rtp

It supports re-sourcing streams as well as the dynamic creation of streams, various RFC's are implemented and the library achieves better performance and less memory then FFMPEG and just about any other solutions in the transport layer and thus makes it a good candidate to use as a centralized point of access for most scenarios.

To sharpen an image we can use the filter (as in many previous answers)

kernel = np.array([[-1, -1, -1],[-1, 8, -1],[-1, -1, 0]], np.float32) 

kernel /= denominator * kernel

It will be the most when the denominator is 1 and will decrease as increased (2.3..)

The most used one is when the denominator is 3.

Below is the implementation.

kernel = np.array([[-1, -1, -1],[-1, 8, -1],[-1, -1, 0]], np.float32) 

kernel = 1/3 * kernel

dst = cv2.filter2D(image, -1, kernel)

If you installed the command line tools separately, delete them using:

sudo rm -rf /Library/Developer/CommandLineTools

Update 2017- Wamp version 3.0.6

If you have Installed VC redist from Microsoft but still your wamp icon is orange then it could be a conflict caused by Skype for port #80.

You will need to change port number as explained below.

Right click on Wamp--> tool--> apache section-->use a port other than 80

Now listen to

http://localhost:7080/phpmyadmin/

When you installed composer pretty sure you used $ sudo command because of that the ~/.composer folder was created by the root.

Run this to fix the issue:

$ sudo chown -R $USER $HOME/.composer

Another way to do this is by using the bitstring module:

>>> from bitstring import BitArray
>>> b = BitArray(bin='11111111')
>>> b.uint
255

Note that the unsigned integer is different from the signed integer:

>>> b.int
-1

The bitstring module isn't a requirement, but it has lots of performant methods for turning input into and from bits into other forms, as well as manipulating them.

Disclaimer: This answer may be a bit old. Since the bootstrap 4 beta. Bootstrap has changed since then.

The table column size class has been changed from this

<th class="col-sm-3">3 columns wide</th>

to

<th class="col-3">3 columns wide</th>

For Laravel 6.X you can do the following:

$user = Auth::guard(<GUARD_NAME>)->user();
$user_id = $user->id;
$full_name = $user->full_name;

You can use the flip commands numpy.flipud() or numpy.fliplr() to get the indexes in descending order after sorting using the argsort command. Thats what I usually do.

In ASP.Net you can use System.Web.HttpUtility to safely encode the cookie value before writing to the cookie and convert it back to its original form on reading it out.

// Encode
HttpUtility.UrlEncode(cookieData);

// Decode
HttpUtility.UrlDecode(encodedCookieData);

This will stop ampersands and equals signs spliting a value into a bunch of name/value pairs as it is written to a cookie.

There's display: none, but I think that might be a bit more than what you're looking for.

There's a simple way of testing low speeds on a real device that seems to have been overlooked. It does require a Mac and an ethernet (or other wired) network connection.

Turn on Wifi sharing on the Mac, turning your computer into a Wifi hotspot, connect your device to this. Use Netlimiter/Charles Proxy or Network Link Conditioner (which you may have already installed) to control the speeds.

For more details and to understand what sort of speeds you should test on check out: http://opensignal.com/blog/2016/02/05/go-slow-how-why-to-test-apps-on-poor-connections/

I like this algorithm as it uses a 1x9 vs 3x3 representation of the board.

private int[] board = new int[9];
private static final int[] START = new int[] { 0, 3, 6, 0, 1, 2, 0, 2 };
private static final int[] INCR  = new int[] { 1, 1, 1, 3, 3, 3, 4, 2 };
private static int SIZE = 3;
/**
 * Determines if there is a winner in tic-tac-toe board.
 * @return {@code 0} for draw, {@code 1} for 'X', {@code -1} for 'Y'
 */
public int hasWinner() {
    for (int i = 0; i < START.length; i++) {
        int sum = 0;
        for (int j = 0; j < SIZE; j++) {
            sum += board[START[i] + j * INCR[i]];
        }
        if (Math.abs(sum) == SIZE) {
            return sum / SIZE;
        }
    }
    return 0;
}

A very simple implementation with String.split():

String path = "/abc/def/ghfj.doc";
// Split path into segments
String segments[] = path.split("/");
// Grab the last segment
String document = segments[segments.length - 1];

The easiest option is to make use of the Excel copy/paste.

Public Sub insertRowBelow()
ActiveCell.Offset(1).EntireRow.Insert Shift:=xlDown, CopyOrigin:=xlFormatFromRightOrAbove
ActiveCell.EntireRow.Copy
ActiveCell.Offset(1).EntireRow.PasteSpecial xlPasteFormats
Application.CutCopyMode = False
End Sub

There are awk built-in variables.

NR - It gives the total number of records processed.

FNR - It gives the total number of records for each input file.

In essence, many things can go wrong in a multi threaded environment (instructions reordering, partially constructed objects, same variable having different values in different threads because of caching at the CPU level etc.).

I like the definition given by Java Concurrency in Practice:

A [portion of code] is thread-safe if it behaves correctly when accessed from multiple threads, regardless of the scheduling or interleaving of the execution of those threads by the runtime environment, and with no additional synchronization or other coordination on the part of the calling code.

By correctly they mean that the program behaves in compliance with its specifications.

Contrived example

Imagine that you implement a counter. You could say that it behaves correctly if:

• counter.next() never returns a value that has already been returned before (we assume no overflow etc. for simplicity)
• all values from 0 to the current value have been returned at some stage (no value is skipped)

A thread safe counter would behave according to those rules regardless of how many threads access it concurrently (which would typically not be the case of a naive implementation).

_{Note: cross-post on Programmers}

Here is a log lifecycle of each fragment in ViewPager which have 4 fragment and offscreenPageLimit = 1 (default value)

FragmentStatePagerAdapter

Go to Fragment1 (launch activity)

Fragment1: onCreateView
Fragment1: onStart
Fragment2: onCreateView
Fragment2: onStart

Go to Fragment2

Fragment3: onCreateView
Fragment3: onStart

Go to Fragment3

Fragment1: onStop
Fragment1: onDestroyView
Fragment1: onDestroy
Fragment1: onDetach
Fragment4: onCreateView
Fragment4: onStart

Go to Fragment4

Fragment2: onStop
Fragment2: onDestroyView
Fragment2: onDestroy

FragmentPagerAdapter

Go to Fragment1 (launch activity)

Fragment1: onCreateView
Fragment1: onStart
Fragment2: onCreateView
Fragment2: onStart

Go to Fragment2

Fragment3: onCreateView
Fragment3: onStart

Go to Fragment3

Fragment1: onStop
Fragment1: onDestroyView
Fragment4: onCreateView
Fragment4: onStart

Go to Fragment4

Fragment2: onStop
Fragment2: onDestroyView

Conclusion: FragmentStatePagerAdapter call onDestroy when the Fragment is overcome offscreenPageLimit while FragmentPagerAdapter not.

Note: I think we should use FragmentStatePagerAdapter for a ViewPager which have a lot of page because it will good for performance.

Example of offscreenPageLimit:

If we go to Fragment3, it will detroy Fragment1 (or Fragment5 if have) because offscreenPageLimit = 1. If we set offscreenPageLimit > 1 it will not destroy.
If in this example, we set offscreenPageLimit=4, there is no different between using FragmentStatePagerAdapter or FragmentPagerAdapter because Fragment never call onDestroyView and onDestroy when we change tab

Github demo here

I used to cherry pick, but found I had some mysterious issues from time to time. I came across a blog by Raymond Chen, a 25 year veteran at Microsoft, that describes some scenarios where cherry picking can cause issues in certain cases.

One of the rules of thumb is, if you cherry pick from one branch into another, then later merge between those branches, you're likely sooner or later going to experience issues.

Here's a reference to Raymond Chen's blogs on this topic: https://devblogs.microsoft.com/oldnewthing/20180312-00/?p=98215

The only issue I had with Raymond's blog is he did not provide a full working example. So I will attempt to provide one here.

The question above asks how to merge only the commit pointed to by the HEAD in the a-good-feature branch over to master.

Here is how that would be done:

1. Find the common ancestor between the master and a-good-feature branches.
2. Create a new branch from that ancestor, we'll call this new branch patch.
3. Cherry pick one or more commits into this new patch branch.
4. Merge the patch branch into both the master and a-good-feature branches.
5. The master branch will now contain the commits, and both master and a-good-feature branches will also have a new common ancestor, which will resolve any future issues if further merging is performed later on.

Here is an example of those commands:

git checkout master...a-good-feature  [checkout the common ancestor]
git checkout -b patch
git cherry-pick a-good-feature  [this is not only the branch name, but also the commit we want]
git checkout master
git merge patch
git checkout a-good-feature
git merge -s ours patch

It might be worth noting that the last line that merged into the a-good-feature branch used the "-s ours" merge strategy. The reason for this is because we simply need to create a commit in the a-good-feature branch that points to a new common ancestor, and since the code is already in that branch, we want to make sure there isn't any chance of a merge conflict. This becomes more important if the commit(s) you are merging are not the most recent.

The scenarios and details surrounding partial merges can get pretty deep, so I recommend reading through all 10 parts of Raymond Chen's blog to gain a full understanding of what can go wrong, how to avoid it, and why this works.

I have a method, the internals of which are wrapped in a MySqlTransaction.

The deadlock issue showed up for me when I ran the same method in parallel with itself.

There was not an issue running a single instance of the method.

When I removed MySqlTransaction, I was able to run the method in parallel with itself with no issues.

Just sharing my experience, I'm not advocating anything.