This REGEX is a patch from @Aamir answer that worked for me

/((?:(?:http?|ftp)[s]*:\/\/)?[a-z0-9-%\/\&=?\.]+\.[a-z]{2,4}\/?([^\s<>\#%"\,\{\}\\|\\\^\[\]`]+)?)/gi

It matches these URL formats

1. yourwebsite.com
2. yourwebsite.com/4564564/546564/546564?=adsfasd
3. www.yourwebsite.com
4. http://yourwebsite.com
5. https://yourwebsite.com
6. ftp://www.yourwebsite.com
7. ftp://yourwebsite.com
8. http://yourwebsite.com/4564564/546564/546564?=adsfasd

Best option would be

Add a compare validator to the web form. Set its controlToValidate. Set its Type property to Date. Set its operator property to DataTypeCheck eg:

<asp:CompareValidator
    id="dateValidator" runat="server" 
    Type="Date"
    Operator="DataTypeCheck"
    ControlToValidate="txtDatecompleted" 
    ErrorMessage="Please enter a valid date.">
</asp:CompareValidator>

Use this code to ensure the user doesn't just enter spaces but a valid name:

pattern="[a-zA-Z][a-zA-Z0-9\s]*"

I have created a custom regex to deal with names:

I have tried these types of names and found working perfect

1. John Smith
   
2. John D'Largy
   
3. John Doe-Smith
   
4. John Doe Smith
   
5. Hector Sausage-Hausen
   
6. Mathias d'Arras
   
7. Martin Luther King
   
8. Ai Wong
   
9. Chao Chang
   
10. Alzbeta Bara
    

My RegEx looks like this:

^([a-zA-Z]{2,}\s[a-zA-Z]{1,}'?-?[a-zA-Z]{2,}\s?([a-zA-Z]{1,})?)

MVC4 Model:

[RegularExpression("^([a-zA-Z]{2,}\\s[a-zA-Z]{1,}'?-?[a-zA-Z]{2,}\\s?([a-zA-Z]{1,})?)", ErrorMessage = "Valid Charactors include (A-Z) (a-z) (' space -)") ]

Please note the double \\ for escape characters

For those of you that are new to RegEx I thought I'd include a explanation.

^               // start of line
[a-zA-Z]{2,}    // will except a name with at least two characters
\s              // will look for white space between name and surname
[a-zA-Z]{1,}    // needs at least 1 Character
\'?-?           // possibility of **'** or **-** for double barreled and hyphenated surnames
[a-zA-Z]{2,}    // will except a name with at least two characters
\s?             // possibility of another whitespace
([a-zA-Z]{1,})? // possibility of a second surname

I came across this post w/a similar issue. My fix was to add a hidden field to hold my invalid state for me.

<input type="hidden" ng-model="vm.application.isValid" required="" />

In my case I had a nullable bool which a person had to select one of two different buttons. if they answer yes, an entity is added to the collection and the state of the button changes. Until all of the questions get answered, (one of the buttons in each of the pairs has a click) the form is not valid.

vm.hasHighSchool = function (attended) { 
  vm.application.hasHighSchool = attended;
  applicationSvc.addSchool(attended, 1, vm.application);
}

<input type="hidden" ng-model="vm.application.hasHighSchool" required="" />
<div class="row">
  <div class="col-lg-3"><label>Did You Attend High School?</label><label class="required" ng-hide="vm.application.hasHighSchool != undefined">*</label></div>
  <div class="col-lg-2">
    <button value="Yes" title="Yes" ng-click="vm.hasHighSchool(true)" class="btn btn-default" ng-class="{'btn-success': vm.application.hasHighSchool == true}">Yes</button>
    <button value="No" title="No" ng-click="vm.hasHighSchool(false)" class="btn btn-default" ng-class="{'btn-success':  vm.application.hasHighSchool == false}">No</button>
  </div>
</div>

You can simply use the jQuery Validate plugin as follows.

jQuery:

$(document).ready(function () {

    $('#myform').validate({ // initialize the plugin
        rules: {
            field1: {
                required: true,
                email: true
            },
            field2: {
                required: true,
                minlength: 5
            }
        }
    });

});

HTML:

<form id="myform">
    <input type="text" name="field1" />
    <input type="text" name="field2" />
    <input type="submit" />
</form>

DEMO: http://jsfiddle.net/xs5vrrso/

Options: http://jqueryvalidation.org/validate

Methods: http://jqueryvalidation.org/category/plugin/

Standard Rules: http://jqueryvalidation.org/category/methods/

Optional Rules available with the additional-methods.js file:

maxWords
minWords
rangeWords
letterswithbasicpunc
alphanumeric
lettersonly
nowhitespace
ziprange
zipcodeUS
integer
vinUS
dateITA
dateNL
time
time12h
phoneUS
phoneUK
mobileUK
phonesUK
postcodeUK
strippedminlength
email2 (optional TLD)
url2 (optional TLD)
creditcardtypes
ipv4
ipv6
pattern
require_from_group
skip_or_fill_minimum
accept
extension

To support language like Hindi which can contain /p{Mark} as well in between language characters. My solution is ^[\p{L}\p{M}]+([\p{L}\p{Pd}\p{Zs}'.]*[\p{L}\p{M}])+$|^[\p{L}\p{M}]+$

You can find all the test cases for this here https://regex101.com/r/3XPOea/1/tests

And you could go the RegExp-way:

var num = "987238";

if(num.match(/^-?\d+$/)){
  //valid integer (positive or negative)
}else if(num.match(/^\d+\.\d+$/)){
  //valid float
}else{
  //not valid number
}

package com.mycompany;

import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;

public class Car {

    @NotNull
    private String manufacturer;

    @NotNull
    @Size(min = 2, max = 14)
    private String licensePlate;

    @Min(2)
    private int seatCount;

    public Car(String manufacturer, String licencePlate, int seatCount) {
        this.manufacturer = manufacturer;
        this.licensePlate = licencePlate;
        this.seatCount = seatCount;
    }

    //getters and setters ...
}

@NotNull, @Size and @Min are so-called constraint annotations, that we use to declare constraints, which shall be applied to the fields of a Car instance:

manufacturer shall never be null

licensePlate shall never be null and must be between 2 and 14 characters long

seatCount shall be at least 2.

You have two approaches to this:

1. check the "keypress" event. If the user presses a special character key, stop him right there
2. check the "onblur" event: when the input element loses focus, validate its contents. If the value is invalid, display a discreet warning beside that input box.

I would suggest the second method because its less irritating. Remember to also check onpaste . If you use only keypress Then We Can Copy and paste special characters so use onpaste also to restrict Pasting special characters

Additionally, I will also suggest that you reconsider if you really want to prevent users from entering special characters. Because many people have $, #, @ and * in their passwords.

I presume that this might be in order to prevent SQL injection; if so: its better that you handle the checks server-side. Or better still, escape the values and store them in the database.

If the error is at the time of any calculation, double check that the values does not contains any comma(,). Values must be only in integer/ float format.

If you include the additional methods file, here's the current file for 1.7: http://ajax.microsoft.com/ajax/jquery.validate/1.7/additional-methods.js

You can use the lettersonly rule :) The additional methods are part of the zip you download, you can always find the latest here.

Here's an example:

$("form").validate({
  rules: {
    myField: { lettersonly: true }
  }
});

It's worth noting, each additional method is independent, you can include that specific one, just place this before your .validate() call:

jQuery.validator.addMethod("lettersonly", function(value, element) {
  return this.optional(element) || /^[a-z]+$/i.test(value);
}, "Letters only please"); 

I have a simpler vanilla js only solution:

For checkboxes:

document.getElementById("id").oninvalid = function () {
    this.setCustomValidity(this.checked ? '' : 'My message');
};

For inputs:

document.getElementById("id").oninvalid = function () {
    this.setCustomValidity(this.value ? '' : 'My message');
};

^[a-zA-Z0-9][-a-zA-Z0-9]+[a-zA-Z0-9].[a-z]{2,3}(.[a-z]{2,3})?(.[a-z]{2,3})?$

Examples that work:

stack.com
sta-ck.com
sta---ck.com
9sta--ck.com
sta--ck9.com
stack99.com
99stack.com
sta99ck.com

It will also work for extensions

.com.uk
.co.in
.uk.edu.in

Examples that will not work:

-stack.com

it will work even with the longest domain extension ".versicherung"

What exactly do you mean by "validation failure"? What are you validating? Are you referring to something like a syntax error (e.g. malformed XML)?

If that's the case, I'd say 400 Bad Request is probably the right thing, but without knowing what it is you're "validating", it's impossible to say.

You could also change the viewChild 'type' to NgForm as in:

@ViewChild('loginForm') loginForm: NgForm;

And then reference your controls in the same way @Julia mentioned:

 private login(formData: any): void {
    this.authService.login(formData).subscribe(res => {
      alert(`Congrats, you have logged in. We don't have anywhere to send you right now though, but congrats regardless!`);
    }, error => {
      this.loginFailed = true; // This displays the error message, I don't really like this, but that's another issue.

      this.loginForm.controls['email'].setErrors({ 'incorrect': true});
      this.loginForm.controls['password'].setErrors({ 'incorrect': true});
    });
  }

Setting the Errors to null will clear out the errors on the UI:

this.loginForm.controls['email'].setErrors(null);

The minimum length is 4 for Saint Helena (Format: +290 XXXX) and Niue (Format: +683 XXXX).

Given the rules you specified:

upto length 13 and including character + infront.

(and also incorporating the min length of 10 in your code)

You're going to want a regex that looks like this:

^\+[0-9]{10,13}$

With the min and max lengths encoded in the regex, you can drop those conditions from your if() block.

Off topic: I'd suggest that a range of 10 - 13 is too limiting for an international phone number field; you're almost certain to find valid numbers that are both longer and shorter than this. I'd suggest a range of 8 - 20 to be safe.

[EDIT] OP states the above regex doesn't work due to the escape sequence. Not sure why, but an alternative would be:

^[+][0-9]{10,13}$

[EDIT 2] OP now adds that the + sign should be optional. In this case, the regex needs a question mark after the +, so the example above would now look like this:

^[+]?[0-9]{10,13}$

$("element").data('bs.modal').isShown

won't work if the modal hasn't been shown before. You will need to add an extra condition:

$("element").data('bs.modal')

so the answer taking into account first appearance:

if ($("element").data('bs.modal') && $("element").data('bs.modal').isShown){
... 
}

You could retrieve the body text of the whole page like this:

bodyText = self.driver.find_element_by_tag_name('body').text

then use an assert to check it like this:

self.assertTrue("the text you want to check for" in bodyText)

Of course, you can be specific and retrieve a specific DOM element's text and then check that instead of retrieving the whole page.

This module works well for comparing two fields. Works great with Angular 1.3+. Simple to use https://www.npmjs.com/package/angular-password

It also allows saving the module as a generic. Just include them in packages list of your module.

Your CustomValidator will only fire when the TextBox isn't empty.

If you need to ensure that it's not empty then you'll need a RequiredFieldValidator too.

Note: If the input control is empty, no validation functions are called and validation succeeds. Use a RequiredFieldValidator control to require the user to enter data in the input control.

EDIT:

If your CustomValidator specifies the ControlToValidate attribute (and your original example does) then your validation functions will only be called when the control isn't empty.

If you don't specify ControlToValidate then your validation functions will be called every time.

This opens up a second possible solution to the problem. Rather than using a separate RequiredFieldValidator, you could omit the ControlToValidate attribute from the CustomValidator and setup your validation functions to do something like this:

Client Side code (Javascript):

function TextBoxDCountyClient(sender, args) {
    var v = document.getElementById('<%=TextBoxDTownCity.ClientID%>').value;
    if (v == '') {
        args.IsValid = false;  // field is empty
    }
    else {
        // do your other validation tests here...
    }
}

Server side code (C#):

protected void TextBoxDTownCity_Validate(
    object source, ServerValidateEventArgs args)
{
    string v = TextBoxDTownCity.Text;
    if (v == string.Empty)
    {
        args.IsValid = false;  // field is empty
    }
    else
    {
        // do your other validation tests here...
    }
}

For integer test it'll be:

- (BOOL) isIntegerNumber: (NSString*)input
{
    return [input integerValue] != 0 || [input isEqualToString:@"0"];
}

Url.Action("Evil", model)

will generate a get query string but your ajax method is post and it will throw error status of 500(Internal Server Error). – Fereydoon Barikzehy Feb 14 at 9:51

Just Add "JsonRequestBehavior.AllowGet" on your Json object.

Here is also a good and simple site to check your php codes and share your code with fiends :

http://trycodeonline.com

I've added a max validation to amd's great answer.

import { Directive, Input, forwardRef } from '@angular/core'
import { NG_VALIDATORS, Validator, AbstractControl, Validators } from '@angular/forms'

/*
 * This is a wrapper for [min] and [max], used to work with template driven forms
 */

@Directive({
  selector: '[min]',
  providers: [{ provide: NG_VALIDATORS, useExisting: MinNumberValidator, multi: true }]
})
export class MinNumberValidator implements Validator {

  @Input() min: number;

  validate(control: AbstractControl): { [key: string]: any } {
    return Validators.min(this.min)(control)
  }
}

@Directive({
  selector: '[max]',
  providers: [{ provide: NG_VALIDATORS, useExisting: MaxNumberValidator, multi: true }]
})
export class MaxNumberValidator implements Validator {

  @Input() max: number;

  validate(control: AbstractControl): { [key: string]: any } {
    return Validators.max(this.max)(control)
  }
}

char check1[10], check2[10];
int foo;

do{
  printf(">> ");
  scanf(" %s", check1);
  foo = strtol(check1, NULL, 10); // convert the string to decimal number
  sprintf(check2, "%d", foo); // re-convert "foo" to string for comparison
} while (!(strcmp(check1, check2) == 0 && 0 < foo && foo < 24)); // repeat if the input is not number

If the input is number, you can use foo as your input.

I have this piece of code that does the job very well for me.

 var prevVal = '';
$(".numericValue").on("input", function (evt) {
    var self = $(this);
    if (self.val().match(/^-?\d*(\.(?=\d*)\d*)?$/) !== null) {
        prevVal = self.val()
    } else {
        self.val(prevVal);
    }
    if ((evt.which != 46 || self.val().indexOf('.') != -1) && (evt.which < 48 || evt.which > 57) && (evt.which != 45 && self.val().indexOf("-") == 0)) {
        evt.preventDefault();
    }
});

Knockout.js validation is handy but it is not robust. You always have to create server side validation replica. In your case (as you use knockout.js) you are sending JSON data to server and back asynchronously, so you can make user think that he sees client side validation, but in fact it would be asynchronous server side validation.

Take a look at example here upida.cloudapp.net:8080/org.upida.example.knockout/order/create?clientId=1 This is a "Create Order" link. Try to click "save", and play with products. This example is done using upida library (there are spring mvc version and asp.net mvc of this library) from codeplex.

Use the following regular expression to validate:

var date_regex = /^(0[1-9]|1[0-2])\/(0[1-9]|1\d|2\d|3[01])\/(19|20)\d{2}$/;
if (!(date_regex.test(testDate))) {
    return false;
}

This is working for me for MM/dd/yyyy.

My solution:

$rules = $user->isDirty('email') ? \User::$rules : array_except(\User::$rules, 'email');

Then in validation:

$validator = \Validator::make(\Input::all(), $rules, \User::$messages);

The logic is if the email address in the form is different, we need to validated it, if the email hasn't changed, we don't need to validate, so remove that rule from validation.

Consider using the Apache Commons UrlValidator class

UrlValidator urlValidator = new UrlValidator();
urlValidator.isValid("http://my favorite site!");

There are several properties that you can set to control how this class behaves, by default http, https, and ftp are accepted.

TLDR Answer

Given an email address like...

[email protected]

The length limits are as follows:

• Entire Email Address (aka: "The Path"): i.e., [email protected] -- 256 characters maximum.
• Local-Part: i.e., me -- 64 character maximum.
• Domain: i.e., example.com -- 254 characters maximum.

Source

SMTP originally defined what a path was in RFC821, published August 1982, which is an official Internet Standard (most RFC's are only proposals). To quote it...

...a reverse-path, specifies who the mail is from.

...a forward-path, which specifies who the mail is to.

RFC2821, published in April 2001, is the Obsoleted Standard that defined our present maximum values for local-parts, domains, and paths. A new Draft Standard, RFC5321, published in October 2008, keeps the same limits. In between these two dates, RFC3696 was published, on February 2004. It mistakenly cites the maximum email address limit as 320-characters, but this document is "Informational" only, and states: "This memo provides information for the Internet community. It does not specify an Internet standard of any kind." So, we can disregard it.

To quote RFC2821, the modern, accepted standard as confirmed in RFC5321...

4.5.3.1.1. Local-part

The maximum total length of a user name or other local-part is 64 characters.

4.5.3.1.2. Domain

The maximum total length of a domain name or number is 255 characters.

4.5.3.1.3. Path

The maximum total length of a reverse-path or forward-path is 256 characters (including the punctuation and element separators).

You'll notice that I indicate a domain maximum of 254 and the RFC indicates a domain maximum of 255. It's a matter of simple arithmetic. A 255-character domain, plus the "@" sign, is a 256-character path, which is the max path length. An empty or blank name is invalid, though, so the domain actually has a maximum of 254.

I'm starting in the webdesign universe and i used DIVs inside LIs with no problem with the semantics. I think that DIVs aren't allowed on lists, that means you can't put a DIV inside an UL, but it has no problem inserting it on a LI (because LI are just list items haha) The problem that i have been encountering is that sometimes the DIV behaves somewhat different from usual, but nothing that our good CSS can't handle haha. Anyway, sorry for my bad english and if my response wasn't helpful haha good luck!

JavaScript validation is not secure as anybody can change what your script does in the browser. Using it for enhancing the visual experience is ok though.

var textBox = document.getElementById("myTextBox");
var textLength = textBox.value.length;
if(textLength > 5)
{
    //red
    textBox.style.backgroundColor = "#FF0000";
}
else
{
    //green
    textBox.style.backgroundColor = "#00FF00";
}

I am implementing old http (0.9, 1.0, 1.1) request and response reader/writer. Request URI is the most problematic place.

You can't just use RFC 1738, 2396 or 3986 as it is. There are many old HTTP clients and servers that allows more characters. So I've made research based on accidentally published webserver access logs: "GET URI HTTP/1.0" 200.

I've found that the following non-standard characters are often used in URI:

\ { } < > | ` ^ "

These characters were described in RFC 1738 as unsafe.

If you want to be compatible with all old HTTP clients and servers - you have to allow these characters in request URI.

Please read more information about this research in oghttp-request-collector.

This is the regex Google serves on their i18napis.appspot.com domain:

GIR[ ]?0AA|((AB|AL|B|BA|BB|BD|BH|BL|BN|BR|BS|BT|BX|CA|CB|CF|CH|CM|CO|CR|CT|CV|CW|DA|DD|DE|DG|DH|DL|DN|DT|DY|E|EC|EH|EN|EX|FK|FY|G|GL|GY|GU|HA|HD|HG|HP|HR|HS|HU|HX|IG|IM|IP|IV|JE|KA|KT|KW|KY|L|LA|LD|LE|LL|LN|LS|LU|M|ME|MK|ML|N|NE|NG|NN|NP|NR|NW|OL|OX|PA|PE|PH|PL|PO|PR|RG|RH|RM|S|SA|SE|SG|SK|SL|SM|SN|SO|SP|SR|SS|ST|SW|SY|TA|TD|TF|TN|TQ|TR|TS|TW|UB|W|WA|WC|WD|WF|WN|WR|WS|WV|YO|ZE)(\d[\dA-Z]?[ ]?\d[ABD-HJLN-UW-Z]{2}))|BFPO[ ]?\d{1,4}

Use PHP's empty() function. The following things are considered to be empty

"" (an empty string)
0 (0 as an integer)
0.0 (0 as a float)
"0" (0 as a string)
NULL
FALSE
array() (an empty array)
$var; (a variable declared, but without a value)

For more details check empty function

This is a JQuery code for Preventing Submit

$('form').submit(function (e) {
            if (radioButtonValue !== "0") {
                e.preventDefault();
            }
        });

It is two problems - is the slashes the right places and is it a valid date. I would suggest you catch input changes and put the slashes in yourself. (annoying for the user)

The interesting problem is whether they put in a valid date and I would suggest exploiting how flexible js is:

function isValidDate(str) {_x000D_
  var newdate = new Date();_x000D_
  var yyyy = 2000 + Number(str.substr(4, 2));_x000D_
  var mm = Number(str.substr(2, 2)) - 1;_x000D_
  var dd = Number(str.substr(0, 2));_x000D_
  newdate.setFullYear(yyyy);_x000D_
  newdate.setMonth(mm);_x000D_
  newdate.setDate(dd);_x000D_
  return dd == newdate.getDate() && mm == newdate.getMonth() && yyyy == newdate.getFullYear();_x000D_
}_x000D_
console.log(isValidDate('jk'));//false_x000D_
console.log(isValidDate('290215'));//false_x000D_
console.log(isValidDate('290216'));//true_x000D_
console.log(isValidDate('292216'));//false

Since str_split() function is not multibyte safe, an easy solution to split UTF-8 encoded string is to use preg_split() with u (PCRE_UTF8) modifier.

preg_split( '//u', $str, null, PREG_SPLIT_NO_EMPTY )

Description

There are many ways to validate your TextBox. You can do this on every keystroke, at a later time, or on the Validating event.

The Validating event gets fired if your TextBox looses focus. When the user clicks on a other Control, for example. If your set e.Cancel = true the TextBox doesn't lose the focus.

MSDN - Control.Validating Event When you change the focus by using the keyboard (TAB, SHIFT+TAB, and so on), by calling the Select or SelectNextControl methods, or by setting the ContainerControl.ActiveControl property to the current form, focus events occur in the following order

Enter

GotFocus

Leave

Validating

Validated

LostFocus

When you change the focus by using the mouse or by calling the Focus method, focus events occur in the following order:

Enter

GotFocus

LostFocus

Leave

Validating

Validated

Sample Validating Event

private void textBox1_Validating(object sender, CancelEventArgs e)
{
    if (textBox1.Text != "something")
        e.Cancel = true;
}

Update

You can use the ErrorProvider to visualize that your TextBox is not valid. Check out Using Error Provider Control in Windows Forms and C#

More Information

• MSDN - Control.Validating Event
• MSDN - ErrorProvider Component (Windows Forms)
• Using Error Provider Control in Windows Forms and C#

This question is more dificult to answer than seems at first sight. If you want to deal with emails correctly.

There were loads of people around the world looking for "the regex to rule them all" but the truth is that there are tones of email providers.

What's the problem? Well, "a_z%@gmail.com cannot exists but it may exists an address like that through another provider "[email protected].

Why? According to the RFC: https://en.wikipedia.org/wiki/Email_address#RFC_specification.

I'll take an excerpt to facilitate the lecture:

The local-part of the email address may use any of these ASCII characters:

- uppercase and lowercase Latin letters A to Z and a to z;
- digits 0 to 9;
- special characters !#$%&'*+-/=?^_`{|}~;
- dot ., provided that it is not the first or last character unless quoted, and provided also that it does not appear consecutively unless quoted (e.g. [email protected] is not allowed but "John..Doe"@example.com is allowed);[6]
Note that some mail servers wildcard local parts, typically the characters following a plus and less often the characters following a minus, so fred+bah@domain and fred+foo@domain might end up in the same inbox as fred+@domain or even as fred@domain. This can be useful for tagging emails for sorting, see below, and for spam control. Braces { and } are also used in that fashion, although less often.
- space and "(),:;<>@[\] characters are allowed with restrictions (they are only allowed inside a quoted string, as described in the paragraph below, and in addition, a backslash or double-quote must be preceded by a backslash);
- comments are allowed with parentheses at either end of the local-part; e.g. john.smith(comment)@example.com and (comment)[email protected] are both equivalent to [email protected].

So, i can own an email address like that:

A__z/J0hn.sm{it!}[email protected]

If you try this address i bet it will fail in all or the major part of regex posted all across the net. But remember this address follows the RFC rules so it's fair valid.

Imagine my frustration at not being able to register anywhere checked with those regex!!

The only one who really can validate an email address is the provider of the email address.

How to deal with, so?

It doesn't matter if a user adds a non-valid e-mail in almost all cases. You can rely on HTML 5 input type="email" that is running near to RFC, little chance to fail. HTML5 input type="email" info: https://www.w3.org/TR/2012/WD-html-markup-20121011/input.email.html

For example, this is an RFC valid email:

"very.(),:;<>[]\".VERY.\"very@\\ \"very\".unusual"@strange.example.com

But the html5 validation will tell you that the text before @ must not contain " or () chars for example, which is actually incorrect.

Anyway, you should do this by accepting the email address and sending an email message to that email address, with a code/link the user must visit to confirm validity.

A good practice while doing this is the "enter your e-mail again" input to avoid user typing errors. If this is not enough for you, add a pre-submit modal-window with a title "is this your current e-mail?", then the mail entered by the user inside an h2 tag, you know, to show clearly which e-mail they entered, then a "yes, submit" button.

<?php

$url= 'www.something.com';
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, true);   
curl_setopt($ch, CURLOPT_NOBODY, true);    
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.4");
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_TIMEOUT,10);
curl_setopt($ch, CURLOPT_ENCODING, "gzip");
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
$output = curl_exec($ch);
$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);


echo $httpcode;
?>

public static function custom_validation()
{
    $rules = array('title' => 'required ','description'  => 'required','status' => 'required',);
    $messages = array('title.required' => 'The Title must be required','status.required' => 'The Status must be required','description.required' => 'The Description must be required',);
    $validation = Validator::make(Input::all(), $rules, $messages);
    return $validation;
}

validation is working with ng repeat if I use the following syntax scope.step3Form['item[107][quantity]'].$touched I don't know it's a best practice or the best solution, but it works

<tr ng-repeat="item in items">
   <td>
        <div class="form-group">
            <input type="text" ng-model="item.quantity" name="item[<% item.id%>][quantity]" required="" class="form-control" placeholder = "# of Units" />
            <span ng-show="step3Form.$submitted || step3Form['item[<% item.id %>][quantity]'].$touched">
                <span class="help-block" ng-show="step3Form['item[<% item.id %>][quantity]'].$error.required"> # of Units is required.</span>
            </span>
        </div>
    </td>
</tr>

if you keep src attribute empty browser will sent request to current page url always add 1*1 transparent img in src attribute if dont want any url

src="data:image/gif;base64,R0lGODlhAQABAAAAACwAAAAAAQABAAA="

Removed NOT operation in alpha-numeric validation. Moved variables to block level scope. Some comments here and there. Derived from the best Micheal

function isAlphaNumeric ( str ) {

  /* Iterating character by character to get ASCII code for each character */
  for ( let i = 0, len = str.length, code = 0; i < len; ++i ) {

    /* Collecting charCode from i index value in a string */
    code = str.charCodeAt( i ); 

    /* Validating charCode falls into anyone category */
    if (
        ( code > 47 && code < 58) // numeric (0-9)
        || ( code > 64 && code < 91) // upper alpha (A-Z)
        || ( code > 96 && code < 123 ) // lower alpha (a-z)
    ) {
      continue;
    } 

    /* If nothing satisfies then returning false */
    return false
  }

  /* After validating all the characters and we returning success message*/
  return true;
};

console.log(isAlphaNumeric("oye"));
console.log(isAlphaNumeric("oye123"));
console.log(isAlphaNumeric("oye%123"));

C# version of andrew's answer:

<asp:CustomValidator ID="CustomValidator1" runat="server" 
        ErrorMessage="Please accept the terms..." 
        onservervalidate="CustomValidator1_ServerValidate"></asp:CustomValidator>
    <asp:CheckBox ID="CheckBox1" runat="server" />

Code-behind:

protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
{
    args.IsValid = CheckBox1.Checked;
}

Somewhat easy to make add or remove HTML5 validation to fieldsets.

 $('form').each(function(){

    // CLEAR OUT ALL THE HTML5 REQUIRED ATTRS
    $(this).find('.required').attr('required', false);

    // ADD THEM BACK TO THE CURRENT FIELDSET
    // I'M JUST USING A CLASS TO IDENTIFY REQUIRED FIELDS
    $(this).find('fieldset.current .required').attr('required', true);

    $(this).submit(function(){

        var current     = $(this).find('fieldset.current')
        var next        = $(current).next()

        // MOVE THE CURRENT MARKER
        $(current).removeClass('current');
        $(next).addClass('current');

        // ADD THE REQUIRED TAGS TO THE NEXT PART
        // NO NEED TO REMOVE THE OLD ONES
        // SINCE THEY SHOULD BE FILLED OUT CORRECTLY
        $(next).find('.required').attr('required', true);

    });

});

document.getElementById(this).innerHTML = '';

Put it inside your if-case. What it does is just to check for the current object within the document and replace it with nothing. You'll have too loop through the list first, I am guessing you are already doing that since you have that if.

Using individual regular expressions to test the different parts would be considerably easier than trying to get one single regular expression to cover all of them. It also makes it easier to add or remove validation criteria.

Note, also, that your usage of .filter() was incorrect; it will always return a jQuery object (which is considered truthy in JavaScript). Personally, I'd use an .each() loop to iterate over all of the inputs, and report individual pass/fail statuses. Something like the below:

$(".buttonClick").click(function () {

    $("input[type=text]").each(function () {
        var validated =  true;
        if(this.value.length < 8)
            validated = false;
        if(!/\d/.test(this.value))
            validated = false;
        if(!/[a-z]/.test(this.value))
            validated = false;
        if(!/[A-Z]/.test(this.value))
            validated = false;
        if(/[^0-9a-zA-Z]/.test(this.value))
            validated = false;
        $('div').text(validated ? "pass" : "fail");
        // use DOM traversal to select the correct div for this input above
    });
});

Working demo

Best email validation regex

[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?

And it's usage :-

bool isEmail = Regex.IsMatch(emailString, @"\A(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?)\Z", RegexOptions.IgnoreCase);

the best one :D (RFC-friendly & no error "too complex") :

function    isMail(mail)
{
    pattuser = /^([A-Z0-9_%+\-!#$&'*\/=?^`{|}~]+\.?)*[A-Z0-9_%+\-!#$&'*\/=?^`{|}~]+$/i;
    pattdomain = /^([A-Z0-9-]+\.?)*[A-Z0-9-]+(\.[A-Z]{2,9})+$/i;

    tab = mail.split("@");
    if (tab.length != 2)
        return false;
    return (pattuser.test(tab[0]) && pattdomain.test(tab[1]));
}

All the validation from model are skipped when we use validate: false

user = User.new(....)
user.save(validate: false)

I know the post is old but after a 3 months time and with various email combinations I came across, able to make this sql for validating Email IDs.

CREATE FUNCTION [dbo].[isValidEmailFormat]
(
    @EmailAddress varchar(500)
)
RETURNS bit
AS
BEGIN
    DECLARE @Result bit

    SET @EmailAddress = LTRIM(RTRIM(@EmailAddress));
    SELECT @Result =
    CASE WHEN
    CHARINDEX(' ',LTRIM(RTRIM(@EmailAddress))) = 0
    AND LEFT(LTRIM(@EmailAddress),1) <> '@'
    AND RIGHT(RTRIM(@EmailAddress),1) <> '.'
    AND LEFT(LTRIM(@EmailAddress),1) <> '-'
    AND CHARINDEX('.',@EmailAddress,CHARINDEX('@',@EmailAddress)) - CHARINDEX('@',@EmailAddress) > 2    
    AND LEN(LTRIM(RTRIM(@EmailAddress))) - LEN(REPLACE(LTRIM(RTRIM(@EmailAddress)),'@','')) = 1
    AND CHARINDEX('.',REVERSE(LTRIM(RTRIM(@EmailAddress)))) >= 3
    AND (CHARINDEX('.@',@EmailAddress) = 0 AND CHARINDEX('..',@EmailAddress) = 0)
    AND (CHARINDEX('-@',@EmailAddress) = 0 AND CHARINDEX('..',@EmailAddress) = 0)
    AND (CHARINDEX('_@',@EmailAddress) = 0 AND CHARINDEX('..',@EmailAddress) = 0)
    AND ISNUMERIC(SUBSTRING(@EmailAddress, 1, 1)) = 0
    AND CHARINDEX(',', @EmailAddress) = 0
    AND CHARINDEX('!', @EmailAddress) = 0
    AND CHARINDEX('-.', @EmailAddress)=0
    AND CHARINDEX('%', @EmailAddress)=0
    AND CHARINDEX('#', @EmailAddress)=0
    AND CHARINDEX('$', @EmailAddress)=0
    AND CHARINDEX('&', @EmailAddress)=0
    AND CHARINDEX('^', @EmailAddress)=0
    AND CHARINDEX('''', @EmailAddress)=0
    AND CHARINDEX('\', @EmailAddress)=0
    AND CHARINDEX('/', @EmailAddress)=0
    AND CHARINDEX('*', @EmailAddress)=0
    AND CHARINDEX('+', @EmailAddress)=0
    AND CHARINDEX('(', @EmailAddress)=0
    AND CHARINDEX(')', @EmailAddress)=0
    AND CHARINDEX('[', @EmailAddress)=0
    AND CHARINDEX(']', @EmailAddress)=0
    AND CHARINDEX('{', @EmailAddress)=0
    AND CHARINDEX('}', @EmailAddress)=0
    AND CHARINDEX('?', @EmailAddress)=0
    AND CHARINDEX('<', @EmailAddress)=0
    AND CHARINDEX('>', @EmailAddress)=0
    AND CHARINDEX('=', @EmailAddress)=0
    AND CHARINDEX('~', @EmailAddress)=0
    AND CHARINDEX('`', @EmailAddress)=0 
    AND CHARINDEX('.', SUBSTRING(@EmailAddress, CHARINDEX('@', @EmailAddress)+1, 2))=0
    AND CHARINDEX('.', SUBSTRING(@EmailAddress, CHARINDEX('@', @EmailAddress)-1, 2))=0
    AND LEN(SUBSTRING(@EmailAddress, 0, CHARINDEX('@', @EmailAddress)))>1
    AND CHARINDEX('.', REVERSE(@EmailAddress)) > 2
    AND CHARINDEX('.', REVERSE(@EmailAddress)) < 5  
    THEN 1 ELSE  0 END


    RETURN @Result
END

Any suggestions are welcomed!

There are several different ways you can handle this. You could add a RequiredFieldValidator as well as a RangeValidator (if that works for your case) or you could add a CustomFieldValidator.

Link to the CustomFieldValidator: http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.customvalidator%28VS.71%29.aspx

Link to MSDN Article on ASP.NET Validation: http://msdn.microsoft.com/en-us/library/aa479045.aspx

Update (March 2020): The W3C validator no longer complains about escaping URLs.

I was checking why Image URL's need escaping, hence tried it in https://validator.w3.org. The explanation is pretty nice. It highlights that even URL's need to be escaped. [PS:I guess it will unescaped when its consumed since URL's need &. Can anyone clarify?]

<img alt="" src="foo?bar=qut&qux=fop" />

An entity reference was found in the document, but there is no reference by that name defined. Often this is caused by misspelling the reference name, unencoded ampersands, or by leaving off the trailing semicolon (;). The most common cause of this error is unencoded ampersands in URLs as described by the WDG in "Ampersands in URLs". Entity references start with an ampersand (&) and end with a semicolon (;). If you want to use a literal ampersand in your document you must encode it as "&" (even inside URLs!). Be careful to end entity references with a semicolon or your entity reference may get interpreted in connection with the following text. Also keep in mind that named entity references are case-sensitive; &Aelig; and æ are different characters. If this error appears in some markup generated by PHP's session handling code, this article has explanations and solutions to your problem.

Use;

^(19|[2-9][0-9])\d{2}$ 

for years 1900 - 9999.

No need to worry for 9999 and onwards - A.I. will be doing all programming by then !!! Hehehehe

You can test your regex at https://regex101.com/

Also more info about non-capturing groups ( mentioned in one the comments above ) here http://www.manifold.net/doc/radian/why_do_non-capture_groups_exist_.htm

I use MVC 3. An example of email address property in one of my classes is:

[Display(Name = "Email address")]
[Required(ErrorMessage = "The email address is required")]
[Email(ErrorMessage = "The email address is not valid")]
public string Email { get; set; }

Remove the Required if the input is optional. No need for regular expressions although I have one which covers all of the options within an email address up to RFC 2822 level (it's very long).

You don't need the date validator. It doesn't support dd/mm/yyyy format, and that's why you are getting "Please enter a valid date" message for input like 13/01/2014. You already have the dateITA validator, which uses dd/mm/yyyy format as you need.

Just like the date validator, your code for dateGreaterThan and dateLessThan calls new Date for input string and has the same issue parsing dates. You can use a function like this to parse the date:

function parseDMY(value) {
    var date = value.split("/");
    var d = parseInt(date[0], 10),
        m = parseInt(date[1], 10),
        y = parseInt(date[2], 10);
    return new Date(y, m - 1, d);
}

In case anyone else has this issue, I experienced the same thing. As discussed in the comments, it was due to the browser attempting to validate hidden fields. It was finding empty fields in the form and trying to focus on them, but because they were set to display:none;, it couldn't. Hence the error.

I was able to solve it by using something similar to this:

$("body").on("submit", ".myForm", function(evt) {

    // Disable things that we don't want to validate.
    $(["input:hidden, textarea:hidden, select:hidden"]).attr("disabled", true);

    // If HTML5 Validation is available let it run. Otherwise prevent default.
    if (this.el.checkValidity && !this.el.checkValidity()) {
        // Re-enable things that we previously disabled.
        $(["input:hidden, textarea:hidden, select:hidden"]).attr("disabled", false);
        return true;
    }
    evt.preventDefault();

    // Re-enable things that we previously disabled.
    $(["input:hidden, textarea:hidden, select:hidden"]).attr("disabled", false);

    // Whatever other form processing stuff goes here.
});

Also, this is possibly a duplicate of "Invalid form control" only in Google Chrome

Try this code:

<input type="text" name="Phone Number" pattern="[7-9]{1}[0-9]{9}" 
       title="Phone number with 7-9 and remaing 9 digit with 0-9">

This code will inputs only in the following format:

9238726384 (starting with 9 or 8 or 7 and other 9 digit using any number)
8237373746
7383673874

Incorrect format:
2937389471(starting not with 9 or 8 or 7)
32796432796(more than 10 digit)
921543(less than 10 digit)

Here's a different approach without using a regex:

function check_your_datetime($x) {
    return (date('Y-m-d H:i:s', strtotime($x)) == $x);
}

Number.isInteger() is probably the most concise. It returns true if it is an integer, and false if it isn't.

A simple one would be

\d{4}-\d{2}-\d{2}

Debuggex Demo

but this does not restrict month to 1-12 and days from 1 to 31.

There are more complex checks like in the other answers, by the way pretty clever ones. Nevertheless you have to check for a valid date, because there are no checks for if a month has 28, 30, or 31 days.

Use JavaScript function isNaN,

if (isNaN($('#inputid').val()))

if (isNaN(document.getElementById('inputid').val()))

if (isNaN(document.getElementById('inputid').value))

Update: And here a nice article talking about it but using jQuery: Restricting Input in HTML Textboxes to Numeric Values

Without make validation patterns, You can easily trim begin and end spaces using these modules.Try this.

https://www.npmjs.com/package/ngx-trim-directive https://www.npmjs.com/package/ng2-trim-directive

Thank you.

For number from 0 to 255 I use this regex:

(([0-9])|([1-9][0-9])|(1([0-9]{2}))|(2[0-4][0-9])|(25[0-5]))

Above regex will match integer number from 0 to 255, but not match 256.

So for IPv4 I use this regex:

^(([0-9])|([1-9][0-9])|(1([0-9]{2}))|(2[0-4][0-9])|(25[0-5]))((\.(([0-9])|([1-9][0-9])|(1([0-9]{2}))|(2[0-4][0-9])|(25[0-5]))){3})$

It is in this structure: ^(N)((\.(N)){3})$ where N is the regex used to match number from 0 to 255.
This regex will match IP like below:

0.0.0.0
192.168.1.2

but not those below:

10.1.0.256
1.2.3.
127.0.1-2.3

For IPv4 CIDR (Classless Inter-Domain Routing) I use this regex:

^(([0-9])|([1-9][0-9])|(1([0-9]{2}))|(2[0-4][0-9])|(25[0-5]))((\.(([0-9])|([1-9][0-9])|(1([0-9]{2}))|(2[0-4][0-9])|(25[0-5]))){3})\/(([0-9])|([12][0-9])|(3[0-2]))$

It is in this structure: ^(N)((\.(N)){3})\/M$ where N is the regex used to match number from 0 to 255, and M is the regex used to match number from 0 to 32.
This regex will match CIDR like below:

0.0.0.0/0
192.168.1.2/32

but not those below:

10.1.0.256/16
1.2.3./24
127.0.0.1/33

And for list of IPv4 CIDR like "10.0.0.0/16", "192.168.1.1/32" I use this regex:

^("(([0-9])|([1-9][0-9])|(1([0-9]{2}))|(2[0-4][0-9])|(25[0-5]))((\.(([0-9])|([1-9][0-9])|(1([0-9]{2}))|(2[0-4][0-9])|(25[0-5]))){3})\/(([0-9])|([12][0-9])|(3[0-2]))")((,([ ]*)("(([0-9])|([1-9][0-9])|(1([0-9]{2}))|(2[0-4][0-9])|(25[0-5]))((\.(([0-9])|([1-9][0-9])|(1([0-9]{2}))|(2[0-4][0-9])|(25[0-5]))){3})\/(([0-9])|([12][0-9])|(3[0-2]))"))*)$

It is in this structure: ^(“C”)((,([ ]*)(“C”))*)$ where C is the regex used to match CIDR (like 0.0.0.0/0).
This regex will match list of CIDR like below:

“10.0.0.0/16”,”192.168.1.2/32”, “1.2.3.4/32”

but not those below:

“10.0.0.0/16” 192.168.1.2/32 “1.2.3.4/32”

Maybe it might get shorter but for me it is easy to understand so fine by me.

Hope it helps!

HTML Form Element Validation

Run Function

<script>
    $("#validationForm").validation({
         button: "#btnGonder",
         onSubmit: function () {
             alert("Submit Process");
         },
         onCompleted: function () {
             alert("onCompleted");
         },
         onError: function () {
             alert("Error Process");
         }
    });
</script>

Go to example and download https://github.com/naimserin/Validation.

You can either do this on a PHP level or on a Javascript level. If you use Javascript, and/or JQuery, you can check and validate if all the checkboxes are checked with a selector...

Jquery also offers several validation libraries. Check out: http://jqueryvalidation.org/

The problem with using Javascript to validate is that it may be bypassed so it is wise to check on the server too.

Example using PHP and assuming you are calling a PO

<?php
    if( $_GET["BoxSelect"] )
 {
     //Process your form here
     // Save to database, send email, redirect...
} else {

     // Return an error and do not anything
     echo "Checkbox is missing"; 


     exit();
 }
?>

If you are using Angular Reactive Forms you can create a file with a function - a validator. This will not allow only spaces to be entered.

import { AbstractControl } from '@angular/forms';
export function removeSpaces(control: AbstractControl) {
  if (control && control.value && !control.value.replace(/\s/g, '').length) {
    control.setValue('');
  }
  return null;
}

and then in your component typescript file use the validator like this for example.

this.formGroup = this.fb.group({
  name: [null, [Validators.required, removeSpaces]]
});

Recursive way to retrieve all the errors from an Angular form, after creating any kind of formulary structure there's no way to retrieve all the errors from the form. This is very useful for debugging purposes but also for plotting those errors.

Tested for Angular 9

getFormErrors(form: AbstractControl) {
    if (form instanceof FormControl) {
        // Return FormControl errors or null
        return form.errors ?? null;
    }
    if (form instanceof FormGroup) {
        const groupErrors = form.errors;
        // Form group can contain errors itself, in that case add'em
        const formErrors = groupErrors ? {groupErrors} : {};
        Object.keys(form.controls).forEach(key => {
            // Recursive call of the FormGroup fields
            const error = this.getFormErrors(form.get(key));
            if (error !== null) {
                // Only add error if not null
                formErrors[key] = error;
            }
        });
        // Return FormGroup errors or null
        return Object.keys(formErrors).length > 0 ? formErrors : null;
    }
}

I tried Omega's example however it was not working with my C# code. I recommend using this instead:

[RegularExpression(@"^(?=[^\d_].*?\d)\w(\w|[!@#$%]){7,20}", ErrorMessage = @"Error. Password must have one capital, one special character and one numerical character. It can not start with a special character or a digit.")]

Knibb High football rules!

This should be relatively fast and accurate but I admit I didn't put it through a thorough test, just a few.

It avoids expensive exceptions, regex, and also avoids looping through a character set, instead using ascii ranges for validation.

public static bool IsBase64String(string s)
    {
        s = s.Trim();
        int mod4 = s.Length % 4;
        if(mod4!=0){
            return false;
        }
        int i=0;
        bool checkPadding = false;
        int paddingCount = 1;//only applies when the first is encountered.
        for(i=0;i<s.Length;i++){
            char c = s[i];
            if (checkPadding)
            {
                if (c != '=')
                {
                    return false;
                }
                paddingCount++;
                if (paddingCount > 3)
                {
                    return false;
                }
                continue;
            }
            if(c>='A' && c<='z' || c>='0' && c<='9'){
                continue;
            }
            switch(c){ 
              case '+':
              case '/':
                 continue;
              case '=': 
                 checkPadding = true;
                 continue;
            }
            return false;
        }
        //if here
        //, length was correct
        //, there were no invalid characters
        //, padding was correct
        return true;
    }

I would use the DateTime.TryParse() method: http://msdn.microsoft.com/en-us/library/system.datetime.tryparse.aspx

For a vivid demonstration, the following monster is pretty good but still does not correctly recognize all syntactically valid email addresses: it recognizes nested comments up to four levels deep.

This is a job for a parser, but even if an address is syntactically valid, it still may not be deliverable. Sometimes you have to resort to the hillbilly method of "Hey, y'all, watch ee-us!"

// derivative of work with the following copyright and license:
// Copyright (c) 2004 Casey West.  All rights reserved.
// This module is free software; you can redistribute it and/or
// modify it under the same terms as Perl itself.

// see http://search.cpan.org/~cwest/Email-Address-1.80/

private static string gibberish = @"
(?-xism:(?:(?-xism:(?-xism:(?-xism:(?-xism:(?-xism:(?-xism:\
s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^
\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))
|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+)*\s*\)\s*))+)*\s*\)\s*)+
|\s+)*[^\x00-\x1F\x7F()<>\[\]:;@\,.<DQ>\s]+(?-xism:(?-xism:\
s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^
\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))
|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+)*\s*\)\s*))+)*\s*\)\s*)+
|\s+)*)|(?-xism:(?-xism:(?-xism:\s*\((?:\s*(?-xism:(?-xism:(
?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:\s*\((?
:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x
0D]))|)+)*\s*\)\s*))+)*\s*\)\s*)+|\s+)*<DQ>(?-xism:(?-xism:[
^\\<DQ>])|(?-xism:\\(?-xism:[^\x0A\x0D])))+<DQ>(?-xism:(?-xi
sm:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xis
m:[^\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\
]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+)*\s*\)\s*))+)*\s*\)\
s*)+|\s+)*))+)?(?-xism:(?-xism:(?-xism:\s*\((?:\s*(?-xism:(?
-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:
\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[
^\x0A\x0D]))|)+)*\s*\)\s*))+)*\s*\)\s*)+|\s+)*<(?-xism:(?-xi
sm:(?-xism:(?-xism:(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^(
)\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:\s*\((?:\s*(
?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))
|)+)*\s*\)\s*))+)*\s*\)\s*)+|\s+)*(?-xism:[^\x00-\x1F\x7F()<
>\[\]:;@\,.<DQ>\s]+(?:\.[^\x00-\x1F\x7F()<>\[\]:;@\,.<DQ>\s]
+)*)(?-xism:(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))
|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-xism:
(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+)*\s
*\)\s*))+)*\s*\)\s*)+|\s+)*)|(?-xism:(?-xism:(?-xism:\s*\((?
:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x
0D]))|(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xi
sm:\\(?-xism:[^\x0A\x0D]))|)+)*\s*\)\s*))+)*\s*\)\s*)+|\s+)*
<DQ>(?-xism:(?-xism:[^\\<DQ>])|(?-xism:\\(?-xism:[^\x0A\x0D]
)))+<DQ>(?-xism:(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\
]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-x
ism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+
)*\s*\)\s*))+)*\s*\)\s*)+|\s+)*))\@(?-xism:(?-xism:(?-xism:(
?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?
-xism:[^\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^
()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+)*\s*\)\s*))+)*\s
*\)\s*)+|\s+)*(?-xism:[^\x00-\x1F\x7F()<>\[\]:;@\,.<DQ>\s]+(
?:\.[^\x00-\x1F\x7F()<>\[\]:;@\,.<DQ>\s]+)*)(?-xism:(?-xism:
\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[
^\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+)
)|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+)*\s*\)\s*))+)*\s*\)\s*)
+|\s+)*)|(?-xism:(?-xism:(?-xism:\s*\((?:\s*(?-xism:(?-xism:
(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:\s*\((
?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\
x0D]))|)+)*\s*\)\s*))+)*\s*\)\s*)+|\s+)*\[(?:\s*(?-xism:(?-x
ism:[^\[\]\\])|(?-xism:\\(?-xism:[^\x0A\x0D])))+)*\s*\](?-xi
sm:(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:
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?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+)*\s*\)\s*))+
)*\s*\)\s*)+|\s+)*)))>(?-xism:(?-xism:\s*\((?:\s*(?-xism:(?-
xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:\
s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^
\x0A\x0D]))|)+)*\s*\)\s*))+)*\s*\)\s*)+|\s+)*))|(?-xism:(?-x
ism:(?-xism:(?-xism:(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^
()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:\s*\((?:\s*
(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D])
)|)+)*\s*\)\s*))+)*\s*\)\s*)+|\s+)*(?-xism:[^\x00-\x1F\x7F()
<>\[\]:;@\,.<DQ>\s]+(?:\.[^\x00-\x1F\x7F()<>\[\]:;@\,.<DQ>\s
]+)*)(?-xism:(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+)
)|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-xism
:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+)*\
s*\)\s*))+)*\s*\)\s*)+|\s+)*)|(?-xism:(?-xism:(?-xism:\s*\((
?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\
x0D]))|(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-x
ism:\\(?-xism:[^\x0A\x0D]))|)+)*\s*\)\s*))+)*\s*\)\s*)+|\s+)
*<DQ>(?-xism:(?-xism:[^\\<DQ>])|(?-xism:\\(?-xism:[^\x0A\x0D
])))+<DQ>(?-xism:(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\
\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-
xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|)
+)*\s*\)\s*))+)*\s*\)\s*)+|\s+)*))\@(?-xism:(?-xism:(?-xism:
(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(
?-xism:[^\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[
^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+)*\s*\)\s*))+)*\
s*\)\s*)+|\s+)*(?-xism:[^\x00-\x1F\x7F()<>\[\]:;@\,.<DQ>\s]+
(?:\.[^\x00-\x1F\x7F()<>\[\]:;@\,.<DQ>\s]+)*)(?-xism:(?-xism
:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:
[^\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+
))|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+)*\s*\)\s*))+)*\s*\)\s*
)+|\s+)*)|(?-xism:(?-xism:(?-xism:\s*\((?:\s*(?-xism:(?-xism
:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:\s*\(
(?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A
\x0D]))|)+)*\s*\)\s*))+)*\s*\)\s*)+|\s+)*\[(?:\s*(?-xism:(?-
xism:[^\[\]\\])|(?-xism:\\(?-xism:[^\x0A\x0D])))+)*\s*\](?-x
ism:(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism
:\\(?-xism:[^\x0A\x0D]))|(?-xism:\s*\((?:\s*(?-xism:(?-xism:
(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|)+)*\s*\)\s*))
+)*\s*\)\s*)+|\s+)*))))(?-xism:\s*\((?:\s*(?-xism:(?-xism:(?
>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0D]))|(?-xism:\s*\((?:
\s*(?-xism:(?-xism:(?>[^()\\]+))|(?-xism:\\(?-xism:[^\x0A\x0
D]))|)+)*\s*\)\s*))+)*\s*\)\s*)*)"
  .Replace("<DQ>", "\"")
  .Replace("\t", "")
  .Replace(" ", "")
  .Replace("\r", "")
  .Replace("\n", "");

private static Regex mailbox =
  new Regex(gibberish, RegexOptions.ExplicitCapture); 

Here's one from jQuery Validate plugin's additional-methods.js file...

jQuery.validator.addMethod("zipUS", function(value, element) {
    return /(^\d{5}$)|(^\d{5}-\d{4}$)/.test(value);
}, "Please specify a valid US zip code.");

EDIT: Since the above code is part of the jQuery Validate plugin, it depends on the .addMethod() method.

Remove dependency on plugins and make it more generic....

function checkZip(value) {
    return (/(^\d{5}$)|(^\d{5}-\d{4}$)/).test(value);
};

Example Usage: http://jsfiddle.net/5PNcJ/

I have created a working CodePen example to demonstrate how you might accomplish your goals.

I added ng-click to the <form> and removed the logic from your button:

<form name="addRelation" data-ng-click="save(model)">
...
<input class="btn" type="submit" value="SAVE" />

Here's the updated template:

<section ng-app="app" ng-controller="MainCtrl">
  <form class="well" name="addRelation" data-ng-click="save(model)">
    <label>First Name</label>
    <input type="text" placeholder="First Name" data-ng-model="model.firstName" id="FirstName" name="FirstName" required/><br/>
    <span class="text-error" data-ng-show="addRelation.submitted && addRelation.FirstName.$invalid">First Name is required</span><br/>
    <label>Last Name</label>
    <input type="text" placeholder="Last Name" data-ng-model="model.lastName" id="LastName" name="LastName" required/><br/>
    <span class="text-error" data-ng-show="addRelation.submitted && addRelation.LastName.$invalid">Last Name is required</span><br/>
    <label>Email</label>
    <input type="email" placeholder="Email" data-ng-model="model.email" id="Email" name="Email" required/><br/>
    <span class="text-error" data-ng-show="addRelation.submitted && addRelation.Email.$error.required">Email address is required</span>
    <span class="text-error" data-ng-show="addRelation.submitted && addRelation.Email.$error.email">Email address is not valid</span><br/>
    <input class="btn" type="submit" value="SAVE" />  
  </form>
</section>

and controller code:

app.controller('MainCtrl', function($scope) {  
  $scope.save = function(model) {
    $scope.addRelation.submitted = true;

    if($scope.addRelation.$valid) {
      // submit to db
      console.log(model); 
    } else {
      console.log('Errors in form data');
    }
  };
});

I hope this helps.

I could do this (demo):

<!doctype html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js"></script>
</head>
<body>
    <form >
        <input type="file" id="f" data-max-size="32154" />
        <input type="submit" />
    </form>
<script>
$(function(){
    $('form').submit(function(){
        var isOk = true;
        $('input[type=file][data-max-size]').each(function(){
            if(typeof this.files[0] !== 'undefined'){
                var maxSize = parseInt($(this).attr('max-size'),10),
                size = this.files[0].size;
                isOk = maxSize > size;
                return isOk;
            }
        });
        return isOk;
    });
});
</script>
</body>
</html>

Alternate solution of the values check

//Duplicate Title Entry 
    $.each(ar , function (i, val) {
        if ( jQuery("input:first").val()== val) alert('VALUE FOUND'+Valuecheck);
  });

@Bean
public RestTemplate restTemplate() 
                throws KeyStoreException, NoSuchAlgorithmException, KeyManagementException {
    TrustStrategy acceptingTrustStrategy = (X509Certificate[] chain, String authType) -> true;

    SSLContext sslContext = org.apache.http.ssl.SSLContexts.custom()
                    .loadTrustMaterial(null, acceptingTrustStrategy)
                    .build();

    SSLConnectionSocketFactory csf = new SSLConnectionSocketFactory(sslContext);

    CloseableHttpClient httpClient = HttpClients.custom()
                    .setSSLSocketFactory(csf)
                    .build();

    HttpComponentsClientHttpRequestFactory requestFactory =
                    new HttpComponentsClientHttpRequestFactory();

    requestFactory.setHttpClient(httpClient);
    RestTemplate restTemplate = new RestTemplate(requestFactory);
    return restTemplate;
 }

Drupal 8

Drupal 8 does not include JS-libraries to pages automaticly. So most probably if you meet this error you need to attach 'core/jquery.form' library to your page (or form). Add something like this to your render array:

$form['#attached']['library'][] = 'core/jquery.form';

Use Validator.element():

Validates a single element, returns true if it is valid, false otherwise.

Here is the example shown in the API:

var validator = $( "#myform" ).validate();
validator.element( "#myselect" );

.valid() validates the entire form, as others have pointed out. The API says:

Checks whether the selected form is valid or whether all selected elements are valid.

Try this one:

    for (;;) {
        if (!sc.hasNextInt()) {
            System.out.println(" enter only integers!: ");
            sc.next(); // discard
            continue;
        }
        choose = sc.nextInt();
        if (choose >= 0) {
            System.out.print("no problem with input");

        } else {
            System.out.print("invalid inputs");

        }
    break;
  }

Here is a working example for strict json parsing with gson library:

public static JsonElement parseStrict(String json) {
    // throws on almost any non-valid json
    return new Gson().getAdapter(JsonElement.class).fromJson(json); 
}

See also my other detailed answer in How to check if JSON is valid in Java using GSON with more info and extended test case with various non-valid examples.

On a different note, it is also always a good practice to add a token to your form and verify it to check if the data was not sent from outside. Here are the steps:

1. Generate a unique token (you can use hash) Ex:

   $token = hash (string $algo , string $data [, bool $raw_output = FALSE ] );
   

2. Assign this token to a session variable. Ex:

   $_SESSION['form_token'] = $token;
   

3. Add a hidden input to submit the token. Ex:

   input type="hidden" name="token" value="{$token}"
   

4. then as part of your validation, check if the submitted token matches the session var.

   Ex: if ( $_POST['token'] === $_SESSION['form_token'] ) ....
   

You need to trigger form validation before checking if it is valid. Field validation runs after you enter data in each field. Form validation is triggered by the submit event but at the document level. So your event handler is being triggered before jquery validates the whole form. But fret not, there's a simple solution to all of this.

You should validate the form:

if ($(this).validate().form()) {
  // do ajax stuff
}

https://jqueryvalidation.org/Validator.form/#validator-form()

Using only standard API, pass the string to a URL object then convert it to a URI object. This will accurately determine the validity of the URL according to the RFC2396 standard.

Example:

public boolean isValidURL(String url) {

    try {
        new URL(url).toURI();
    } catch (MalformedURLException | URISyntaxException e) {
        return false;
    }

    return true;
}

For anyone developing with WordPress, just use

esc_url_raw($url) === $url

to validate a URL (here's WordPress' documentation on esc_url_raw). It handles URLs much better than filter_var($url, FILTER_VALIDATE_URL) because it is unicode and XSS-safe. (Here is a good article mentioning all the problems with filter_var).

Using directive it becomes easy and can be used throughout the application

HTML

<input type="text" placeholder="Enter value" numbersOnly>

As .keyCode() and .which() are deprecated, codes are checked using .key() Referred from

Directive:

@Directive({
   selector: "[numbersOnly]"
})

export class NumbersOnlyDirective {
  @Input() numbersOnly:boolean;

  navigationKeys: Array<string> = ['Backspace']; //Add keys as per requirement
  
  constructor(private _el: ElementRef) { }

  @HostListener('keydown', ['$event']) onKeyDown(e: KeyboardEvent) {
    
    if (
      // Allow: Delete, Backspace, Tab, Escape, Enter, etc
      this.navigationKeys.indexOf(e.key) > -1 || 
      (e.key === 'a' && e.ctrlKey === true) || // Allow: Ctrl+A
      (e.key === 'c' && e.ctrlKey === true) || // Allow: Ctrl+C
      (e.key === 'v' && e.ctrlKey === true) || // Allow: Ctrl+V
      (e.key === 'x' && e.ctrlKey === true) || // Allow: Ctrl+X
      (e.key === 'a' && e.metaKey === true) || // Cmd+A (Mac)
      (e.key === 'c' && e.metaKey === true) || // Cmd+C (Mac)
      (e.key === 'v' && e.metaKey === true) || // Cmd+V (Mac)
      (e.key === 'x' && e.metaKey === true) // Cmd+X (Mac)
    ) {
        return;  // let it happen, don't do anything
    }
    // Ensure that it is a number and stop the keypress
    if (e.key === ' ' || isNaN(Number(e.key))) {
      e.preventDefault();
    }
  }
}

function validateURL(textval) {
    var urlregex = /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/;
    return urlregex.test(textval);
}

This can return true for URLs like:

http://stackoverflow.com/questions/1303872/url-validation-using-javascript

or:

http://regexlib.com/DisplayPatterns.aspx?cattabindex=1&categoryId=2

there is a simpler way of checking if a variable is an integer. you can use $.isNumeric() function. e.g.

$.isNumeric( 10 );     // true

this will return true but if you put a string in place of the 10, you will get false.

I hope this works for you.

I have run the following below and it passes all the test cases...

It makes use of the different way in which parseFloat and Number handle their inputs...

function IsNumeric(_in) {
    return (parseFloat(_in) === Number(_in) && Number(_in) !== NaN);
}

The previous posters made a little mistake. The accept attribute is only a display filter. It will not validate your entry before submitting.

This attribute forces the file dialog to display the required mime type only. But the user can override that filter. He can choose . and see all the files in the current directory. By doing so, he can select any file with any extension, and submit the form.

So, to answer to the original poster, NO. You cannot restrict the input file to one particular extension by using HTML.

But you can use javascript to test the filename that has been chosen, just before submitting. Just insert an onclick attribute on your submit button and call the code that will test the input file value. If the extension is forbidden, you'll have to return false to invalidate the form. You may even use a jQuery custom validator and so on, to validate the form.

Finally, you'll have to test the extension on the server side too. Same problem about the maximum allowed file size.

Should not enclose true with double quote " " it should be like

$(document).ready(function() {            
   $('input').attr('required', true);   
});

Also you can use prop

jQuery(document).ready(function() {            
   $('input').prop('required', true);   
}); 

Instead of true you can try required. Such as

$('input').prop('required', 'required');

Well - you won't be able to do it server-side on post-back as the file will get submitted (uploaded) during the post-back.

I think you may be able to do it on the client using JavaScript. Personally, I use a third party component called radUpload by Telerik. It has a good client-side and server-side API, and it provides a progress bar for big file uploads.

I'm sure there are open source solutions available, too.

In AngularJS (version 1.x), there is a build-in directive ngRequired

<input type='email'
       name='email'
       ng-model='user.email' 
       placeholder='[email protected]'
       ng-required='!user.phone' />

<input type='text'
       ng-model='user.phone'             
       placeholder='(xxx) xxx-xxxx'
       ng-required='!user.email' /> 

In Angular2 or above

<input type='email'
       name='email'
       [(ngModel)]='user.email' 
       placeholder='[email protected]'
       [required]='!user.phone' />

<input type='text'
       [(ngModel)]='user.phone'             
       placeholder='(xxx) xxx-xxxx'
       [required]='!user.email' /> 

Yes , Jared and Kelly Orr are right. I use the following code like in edit exception.

foreach (var issue in dinner.GetRuleViolations())
{
    ModelState.AddModelError(issue.PropertyName, issue.ErrorMessage);
}

in stead of

ModelState.AddRuleViolations(dinner.GetRuleViolations());

Here is a pure HTML/CSS solution for Chrome tested in version 65.0.3325.162 (official build) (64-bit).

Set the input type="text" and use CSS text-security:disc to mimic type="password".

<input type="text" name="username">
<input type="text" name="password" style="text-security:disc; -webkit-text-security:disc;">

• Note: Works in Firefox but CSS moz-text-security is Deprecated/Removed. To fix this create a CSS font-face made only of dots and use font-family: 'dotsfont';.

  Source: Get input type=text to look like type=password

  The Source above contains a link to a work-around for CSS moz-text-security and -webkit-text-security property.

  Source: https://github.com/kylewelsby/dotsfont

As far as I have tested this solution works for Chrome, Firefox version 59.0 (64-bit), Internet Explorer version 11.0.9600 as well as the IE Emulators Internet Explorer 5 and greater.

I was able to achieve that by wrapping Button with ConstraintLayout:

<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:elevation="0dp">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/top_toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="@color/white_color">

            <androidx.constraintlayout.widget.ConstraintLayout
                android:layout_width="match_parent"
                android:layout_marginTop="10dp"
                android:layout_height="wrap_content">

                <TextView
                    android:id="@+id/cancel"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/cancel"
                    android:layout_marginStart="5dp"
                    app:layout_constraintBottom_toBottomOf="parent"
                    app:layout_constraintLeft_toLeftOf="parent"
                    app:layout_constraintTop_toTopOf="parent" />

                <Button
                    android:id="@+id/btn_publish"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/publish"
                    android:background="@drawable/button_publish_rounded"
                    app:layout_constraintTop_toTopOf="parent"
                    app:layout_constraintBottom_toBottomOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
                    android:layout_marginEnd="10dp"
                    app:layout_constraintLeft_toRightOf="@id/cancel"
                    tools:layout_editor_absoluteY="0dp" />

            </androidx.constraintlayout.widget.ConstraintLayout>

        </androidx.appcompat.widget.Toolbar>

    </com.google.android.material.appbar.AppBarLayout>

</androidx.coordinatorlayout.widget.CoordinatorLayout>

You may create a drawable resourcebutton_publish_rounded, define the button properties and assign this file to button's android:background property:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@color/green" />
    <corners android:radius="100dp" />
</shape>

This is a slight variation of the above theme but I'm putting here in case others hit this and cannot make sense of it ...as I did.

When using saveXML(), preserveWhiteSpace in the target DOMdocument does not apply to imported nodes (as at PHP 5.6).

Consider the following code:

$dom = new DOMDocument();                               //create a document
$dom->preserveWhiteSpace = false;                       //disable whitespace preservation
$dom->formatOutput = true;                              //pretty print output
$documentElement = $dom->createElement("Entry");        //create a node
$dom->appendChild ($documentElement);                   //append it 
$message = new DOMDocument();                           //create another document
$message->loadXML($messageXMLtext);                     //populate the new document from XML text
$node=$dom->importNode($message->documentElement,true); //import the new document content to a new node in the original document
$documentElement->appendChild($node);                   //append the new node to the document Element
$dom->saveXML($dom->documentElement);                   //print the original document

In this context, the $dom->saveXML(); statement will NOT pretty print the content imported from $message, but content originally in $dom will be pretty printed.

In order to achieve pretty printing for the entire $dom document, the line:

$message->preserveWhiteSpace = false; 

must be included after the $message = new DOMDocument(); line - ie. the document/s from which the nodes are imported must also have preserveWhiteSpace = false.

To Create a foreign key on any table

ALTER TABLE [SCHEMA].[TABLENAME] ADD FOREIGN KEY (COLUMNNAME) REFERENCES [TABLENAME](COLUMNNAME)
EXAMPLE
ALTER TABLE [dbo].[UserMaster] ADD FOREIGN KEY (City_Id) REFERENCES [dbo].[CityMaster](City_Id)

For:

var str = "hello world!";

To get the resulting string without the first 10 characters and an empty string if the string is less or equal in length to 10 you can use:

var result = str.Length <= 10 ? "" : str.Substring(10);

or

var result = str.Length <= 10 ? "" : str.Remove(0, 10);

First variant being preferred since it needs only one method parameter.

You can also use query which is very readable in my opinion and straightforward to use:

import pandas as pd

df = pd.DataFrame({'A': [1, 2, 3, 4], 'B': [10, 20, 50, 80], 'C': [6, 7, 8, 9]})
df = df.set_index(['A', 'B'])

      C
A B    
1 10  6
2 20  7
3 50  8
4 80  9

For what you had in mind you can now simply do:

df.query('A == 1')

      C
A B    
1 10  6

You can also have more complex queries using and

df.query('A >= 1 and B >= 50')

      C
A B    
3 50  8
4 80  9

and or

df.query('A == 1 or B >= 50')

      C
A B    
1 10  6
3 50  8
4 80  9

You can also query on different index levels, e.g.

df.query('A == 1 or C >= 8')

will return

      C
A B    
1 10  6
3 50  8
4 80  9

If you want to use variables inside your query, you can use @:

b_threshold = 20
c_threshold = 8

df.query('B >= @b_threshold and C <= @c_threshold')

      C
A B    
2 20  7
3 50  8

In Swift:

let globalPoint = aView.superview?.convertPoint(aView.frame.origin, toView: nil)

This will do it without painful manipulation or multiple command sequences:

build/%.o: src/%.cpp
src/%.o: src/%.cpp
%.o:
    $(CC) -c $< -o $@

build/test.exe: build/widgets/apple.o build/widgets/knob.o build/tests/blend.o src/ui/flash.o
    $(LD) $^ -o $@

JasperE has explained why "%.o: %.cpp" won't work; this version has one pattern rule (%.o:) with commands and no prereqs, and two pattern rules (build/%.o: and src/%.o:) with prereqs and no commands. (Note that I put in the src/%.o rule to deal with src/ui/flash.o, assuming that wasn't a typo for build/ui/flash.o, so if you don't need it you can leave it out.)

build/test.exe needs build/widgets/apple.o,
build/widgets/apple.o looks like build/%.o, so it needs src/%.cpp (in this case src/widgets/apple.cpp),
build/widgets/apple.o also looks like %.o, so it executes the CC command and uses the prereqs it just found (namely src/widgets/apple.cpp) to build the target (build/widgets/apple.o)

public class CheckHeapSize {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        long heapSize = Runtime.getRuntime().totalMemory(); 

        // Get maximum size of heap in bytes. The heap cannot grow beyond this size.// Any attempt will result in an OutOfMemoryException.
        long heapMaxSize = Runtime.getRuntime().maxMemory();

         // Get amount of free memory within the heap in bytes. This size will increase // after garbage collection and decrease as new objects are created.
        long heapFreeSize = Runtime.getRuntime().freeMemory(); 

        System.out.println("heapsize"+formatSize(heapSize));
        System.out.println("heapmaxsize"+formatSize(heapMaxSize));
        System.out.println("heapFreesize"+formatSize(heapFreeSize));

    }
    public static String formatSize(long v) {
        if (v < 1024) return v + " B";
        int z = (63 - Long.numberOfLeadingZeros(v)) / 10;
        return String.format("%.1f %sB", (double)v / (1L << (z*10)), " KMGTPE".charAt(z));
    }
}

>> For Visual Studio Users using Package Manager Console <<

If you are using the Package Manager Console in Visual Studio and you want to execute:

npm install and get:

ENOENT: no such file or directory, open 'C:\Users...\YourProject\package.json'

Verify that you are executing the command in the correct directory.

VS by default uses the solution folder when opening the Package Manager Console.

Execute dir then you can see in which folder you currently are. Most probably in the solution folder, that's why you get this error. Now you have to cd to your project folder.

cd YourWebProject

Now npm install should work now, if not, then you have another issue.

I found shellcheck utility and may be some folks find it interesting https://github.com/koalaman/shellcheck

A little example:

$ cat test.sh 
ARRAY=("hello there" world)

for x in $ARRAY; do
  echo $x
done

$ shellcheck test.sh 

In test.sh line 3:
for x in $ARRAY; do
         ^-- SC2128: Expanding an array without an index only gives the first element.

fix the bug, first try...

$ cat test.sh       
ARRAY=("hello there" world)

for x in ${ARRAY[@]}; do
  echo $x
done

$ shellcheck test.sh

In test.sh line 3:
for x in ${ARRAY[@]}; do
         ^-- SC2068: Double quote array expansions, otherwise they're like $* and break on spaces.

Let's try again...

$ cat test.sh 
ARRAY=("hello there" world)

for x in "${ARRAY[@]}"; do
  echo $x
done

$ shellcheck test.sh

find now!

It's just a small example.

I use PHP to find the URL and match the page name (without the extension of .php, also I can add multiple pages that all have the same word in common like contact, contactform, etc. All will have that class added) and add a class with PHP to change the color, etc. For that you would have to save your pages with file extension .php.

Here is a demo. Change your links and pages as required. The CSS class for all the links is .tab and for the active link there is also another class of .currentpage (as is the PHP function) so that is where you will overwrite your CSS rules. You could name them whatever you like.

<?php # Using REQUEST_URI
    $currentpage = $_SERVER['REQUEST_URI'];?>
    <div class="nav">
        <div class="tab
             <?php
                 if(preg_match("/index/i", $currentpage)||($currentpage=="/"))
                     echo " currentpage";
             ?>"><a href="index.php">Home</a>
         </div>
         <div class="tab
             <?php
                 if(preg_match("/services/i", $currentpage))
                     echo " currentpage";
             ?>"><a href="services.php">Services</a>
         </div>
         <div class="tab
             <?php
                 if(preg_match("/about/i", $currentpage))
                     echo " currentpage";
             ?>"><a href="about.php">About</a>
         </div>
         <div class="tab
             <?php
                 if(preg_match("/contact/i", $currentpage))
                     echo " currentpage";
             ?>"><a href="contact.php">Contact</a>
         </div>
     </div> <!--nav-->

In my opinion, caisah's answer misses an important part of your question, namely dealing with the server being offline.

Still, using requests is my favorite option, albeit as such:

import requests

try:
    requests.get(url)
except requests.exceptions.ConnectionError:
    print(f"URL {url} not reachable")

in c# 7.0 we can do :

var a = reader["ERateCode"] as string;
var b = reader["ERateLift"] as int?;
var c = reader["Id"] as int?;

so it will keep null value if it is.

Here is the alternative general solution - it sorts elements of a dict by keys and values.

The advantage of it - no need to specify keys, and it would still work if some keys are missing in some of dictionaries.

def sort_key_func(item):
    """ Helper function used to sort list of dicts

    :param item: dict
    :return: sorted list of tuples (k, v)
    """
    pairs = []
    for k, v in item.items():
        pairs.append((k, v))
    return sorted(pairs)
sorted(A, key=sort_key_func)

Unless you have native code (machine code compiled for a specific arcitechture) your code will run equally well in a 32-bit and 64-bit JVM.

Note, however, that due to the larger adresses (32-bit is 4 bytes, 64-bit is 8 bytes) a 64-bit JVM will require more memory than a 32-bit JVM for the same task.

I was having the same problem while trying to create a file on the server (actually a file that is a copy from a template).

Here's the complete error message:

{ERROR} 08/07/2012 22:15:58 - System.UnauthorizedAccessException: Access to the path 'C:\inetpub\wwwroot\SAvE\Templates\Cover.pdf' is denied.

I added a new folder called Templates inside the IIS app folder. One very important thing in my case is that I needed to give the Write (Gravar) permission for the IUSR user on that folder. You may also need to give Network Service and ASP.NET v$.# the same Write permission.

After doing this everything works as expected.

1. Normal Class: A Java class

2. Java Beans:

   • All properties private (use getters/setters)
   • A public no-argument constructor
   • Implements Serializable.

3. Pojo: Plain Old Java Object is a Java object not bound by any restriction other than those forced by the Java Language Specification. I.e., a POJO should not have to

   • Extend prespecified classes
   • Implement prespecified interface
   • Contain prespecified annotations

You cannot create different "variable names" but you can create different object properties. There are many ways to do whatever it is you're actually trying to accomplish. In your case I would just do

for (var i = myArray.length - 1; i >= 0; i--) {    console.log(eval(myArray[i])); }; 

More generally you can create object properties dynamically, which is the type of flexibility you're thinking of.

var result = {}; for (var i = myArray.length - 1; i >= 0; i--) {     result[myArray[i]] = eval(myArray[i]);   }; 

I'm being a little handwavey since I don't actually understand language theory, but in pure Javascript (including Node) references (i.e. variable names) are happening at a higher level than at runtime. More like at the call stack; you certainly can't manufacture them in your code like you produce objects or arrays. Browsers do actually let you do this anyway though it's terrible practice, via

window['myVarName'] = 'namingCollisionsAreFun';  

(per comment)

Right-click any series on the chart. In the "Format Data Series" dialog, there is a "Series Order" tab, in which you can move series up and down. I find this much easier than fiddling with the last argument of the series formula.

This is in Excel 2003 in Windows. There is a similar dialog in Excel 2011 for Mac:

Use the following command:

in.nextLine();

right after

System.out.println("Invalid input. Please Try Again.");
System.out.println();

or after the following curly bracket (where your comment regarding it, is).

This command advances the scanner to the next line (when reading from a file or string, this simply reads the next line), thus essentially flushing it, in this case. It clears the buffer and readies the scanner for a new input. It can, preferably, be used for clearing the current buffer when a user has entered an invalid input (such as a letter when asked for a number).

Documentation of the method can be found here: http://docs.oracle.com/javase/7/docs/api/java/util/Scanner.html#nextLine()

Hope this helps!

I'm using gson 2.2.3

public class Main {

/**
 * @param args
 * @throws IOException 
 */
public static void main(String[] args) throws IOException {

    JsonReader jsonReader = new JsonReader(new FileReader("jsonFile.json"));

    jsonReader.beginObject();

    while (jsonReader.hasNext()) {

    String name = jsonReader.nextName();
        if (name.equals("descriptor")) {
             readApp(jsonReader);

        }
    }

   jsonReader.endObject();
   jsonReader.close();

}

public static void readApp(JsonReader jsonReader) throws IOException{
    jsonReader.beginObject();
     while (jsonReader.hasNext()) {
         String name = jsonReader.nextName();
         System.out.println(name);
         if (name.contains("app")){
             jsonReader.beginObject();
             while (jsonReader.hasNext()) {
                 String n = jsonReader.nextName();
                 if (n.equals("name")){
                     System.out.println(jsonReader.nextString());
                 }
                 if (n.equals("age")){
                     System.out.println(jsonReader.nextInt());
                 }
                 if (n.equals("messages")){
                     jsonReader.beginArray();
                     while  (jsonReader.hasNext()) {
                          System.out.println(jsonReader.nextString());
                     }
                     jsonReader.endArray();
                 }
             }
             jsonReader.endObject();
         }

     }
     jsonReader.endObject();
}
}

Maybe your method for adding items into fragment should be public (placed in desired Fragment) and should have parameter the same type as selectedItems ..

That will make it visible from activity, which will have selectedItems array and voila..

p.s. better name it addItemsFromArray(typeOfSelectedItems[] pSelectedItems) cause name addItem() is quite undescriptive

Edit: stackoverflow just suggested similar topic :) Check here for detailed idea implementation.. :)

@m59 Directives will work for ng-bind-html you just need to wait for $viewContentLoaded to finish

app.directive('targetBlank', function($timeout) {
  return function($scope, element) {
    $scope.initializeTarget = function() {
      return $scope.$on('$viewContentLoaded', $timeout(function() {
        var elems;
        elems = element.prop('tagName') === 'A' ? element : element.find('a');
        elems.attr('target', '_blank');
      }));
    };
    return $scope.initializeTarget();

  };
});

Update: Current Spring cache implementation uses all method parameters as the cache key if not specified otherwise. If you want to use selected keys, refer to Arjan's answer which uses SpEL list {#isbn, #includeUsed} which is the simplest way to create unique keys.

From Spring Documentation

The default key generation strategy changed with the release of Spring 4.0. Earlier versions of Spring used a key generation strategy that, for multiple key parameters, only considered the hashCode() of parameters and not equals(); this could cause unexpected key collisions (see SPR-10237 for background). The new 'SimpleKeyGenerator' uses a compound key for such scenarios.

Before Spring 4.0

I suggest you to concat the values of the parameters in Spel expression with something like key="#checkWarehouse.toString() + #isbn.toString()"), I believe this should work as org.springframework.cache.interceptor.ExpressionEvaluator returns Object, which is later used as the key so you don't have to provide an int in your SPEL expression.

As for the hash code with a high collision probability - you can't use it as the key.

Someone in this thread has suggested to use T(java.util.Objects).hash(#p0,#p1, #p2) but it WILL NOT WORK and this approach is easy to break, for example I've used the data from SPR-9377 :

    System.out.println( Objects.hash("someisbn", new Integer(109), new Integer(434)));
    System.out.println( Objects.hash("someisbn", new Integer(110), new Integer(403)));

Both lines print -636517714 on my environment.

P.S. Actually in the reference documentation we have

@Cacheable(value="books", key="T(someType).hash(#isbn)") 
public Book findBook(ISBN isbn, boolean checkWarehouse, boolean includeUsed)

I think that this example is WRONG and misleading and should be removed from the documentation, as the keys should be unique.

P.P.S. also see https://jira.springsource.org/browse/SPR-9036 for some interesting ideas regarding the default key generation.

I'd like to add for the sake of correctness and as an entertaining mathematical/computer science fact that unlike built-in hash, using a secure cryptographic hash function like MD5 or SHA256, due to the properties of such function IS absolutely possible for this task, but to compute it every time may be too expensive, checkout for example Dan Boneh cryptography course to learn more.

You can do it in componentDidMount() lifecycle method in following way

componentDidMount(){
    const buttonElement = document.querySelector(".rsc-submit-button");
    const inputElement = document.querySelector(".rsc-input");
    buttonElement.setAttribute('aria-hidden', 'true');
    inputElement.setAttribute('aria-label', 'input');
  }

EDIT : my bad! With my answer, the icon won't behave as a toggler Actually, it will be shown even when not collapsed... Still searching...

This would work :

<button class="btn btn-primary" type="button" data-toggle="collapse" 
    data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent"
    aria-expanded="false" aria-label="Toggle navigation">
    <span>
        <i class="fas fa-bars"></i>
    </span>
</button>

The trick proposed by my answer is to replace the navbar-toggler with a classical button class btn and then, as answered earlier, use an icon font.

Note, that if you keep <button class="navbar-toggler">, the button will have a "strange" shape.

As stated in this post on github, bootstrap uses some "css trickery", so users don't have to rely on fonts.

So, just don't use the "navbar-toggler" class on your button if you want to use an icon font.

Cheers.

You can do this with PARTITION and RANK:

select * from
(
    select MyPK, fmgcms_cpeclaimid, createdon,  
        Rank() over (Partition BY fmgcms_cpeclaimid order by createdon DESC) as Rank
    from Filteredfmgcms_claimpaymentestimate 
    where createdon < 'reportstartdate' 
) tmp
where Rank = 1

I went SSH using the per project deploy keys setting (read only)

I also had the same problem. Then I installed the zlib, still the problem remained the same. Then I added the following lines in my .bashrc and it worked. You should replace the path with your zlib installation path. (I didn't have root privileges).

export PATH =$PATH:$HOME/Softwares/library/Zlib/zlib-1.2.11/
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HOME/Softwares/library/Zlib/zlib-1.2.11/lib/
export LIBRARY_PATH=$LIBRARY_PATH:$HOME/Softwares/library/Zlib/zlib-1.2.11/lib/
export C_INCLUDE_PATH=$HOME/Softwares/library/Zlib/zlib-1.2.11/include/
export CPLUS_INCLUDE_PATH=$HOME/Softwares/library/Zlib/zlib-1.2.11/include/
export PKG_CONFIG_PATH=$HOME/Softwares/library/Zlib/zlib-1.2.11/lib/pkgconfig

Jason Bunting's answer gave me enough of a clue to find what I needed:

<<Object instance>>.constructor.name

So, for example, in the following piece of code:

function MyObject() {}
var myInstance = new MyObject();

myInstance.constructor.name would return "MyObject".

I have tried this

return this.db.collection('items').snapshotChanges().pipe(
          map(actions => {       
            return actions.map(a => {
              const data = a.payload.doc.data() as Item;
              data.id = a.payload.doc.id;
              data.$key = a.payload.doc.id;
              return data;
            });
          })
        );

I was looking for the same thing since the background of my select is the same as the arrow color. As previously mentioned, it is impossible yet to add anything using :before or :after on a select element. My solution was to create a wrapper element on which I added the following :before code.

.select-wrapper {
    position: relative;
}

.select-wrapper:before {
    content: '\f0d7';
    font-family: FontAwesome;
    color: #fff;
    display: inline-block;
    position: absolute;
    right: 20px;
    top: 15px;
    pointer-events: none;
}

And this my select

select {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    width: 100%;
    padding: 10px 20px;
    background: #000;
    color: #fff;
    border: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

select::-ms-expand {
    display: none;
}

I have used FontAwesome.io for my new arrow, but you can use whatever else you want. Obviously this is not a perfect solution, but depending on your needs it might be enough.

Here's a little plug if you mostly want to

• go crazy customizing the closed state of a select element
• but at open state, you favor a better native experience to picking options (scroll wheel, arrow keys, tab focus, ajax modifications to options, proper zindex, etc)
• dislike the messy ul, li generated markups

Then jquery.yaselect.js could be a better fit. Simply:

$('select').yaselect();

And the final markup is:

<div class="yaselect-wrap">
  <div class="yaselect-current"><!-- current selection --></div>
</div>
<select class="yaselect-select" size="5">
  <!-- your option tags -->
</select>

Check it out on github.com

With Bootstrap 4 .hidden-* classes were completely removed (yes, they were replaced by hidden-*-* but those classes are also gone from v4 alphas).

Starting with v4-beta, you can combine .d-*-none and .d-*-block classes to achieve the same result.

visible-* was removed as well; instead of using explicit .visible-* classes, make the element visible by not hiding it (again, use combinations of .d-none .d-md-block). Here is the working example:

<div class="col d-none d-sm-block">
    <span class="vcard">
        …
    </span>
</div>
<div class="col d-none d-xl-block">
    <div class="d-none d-md-block">
                …
    </div>
    <div class="d-none d-sm-block">
                …
    </div>
</div>

class="hidden-xs" becomes class="d-none d-sm-block" (or d-none d-sm-inline-block) ...

<span class="d-none d-sm-inline">hidden-xs</span>

<span class="d-none d-sm-inline-block">hidden-xs</span>

An example of Bootstrap 4 responsive utilities:

<div class="d-none d-sm-block"> hidden-xs           
  <div class="d-none d-md-block"> visible-md and up (hidden-sm and down)
    <div class="d-none d-lg-block"> visible-lg and up  (hidden-md and down)
      <div class="d-none d-xl-block"> visible-xl </div>
    </div>
  </div>
</div>

<div class="d-sm-none"> eXtra Small <576px </div>
<div class="d-none d-sm-block d-md-none d-lg-none d-xl-none"> SMall =576px </div>
<div class="d-none d-md-block d-lg-none d-xl-none"> MeDium =768px </div>
<div class="d-none d-lg-block d-xl-none"> LarGe =992px </div>
<div class="d-none d-xl-block"> eXtra Large =1200px </div>

<div class="d-xl-none"> hidden-xl (visible-lg and down)         
  <div class="d-lg-none d-xl-none"> visible-md and down (hidden-lg and up)
    <div class="d-md-none d-lg-none d-xl-none"> visible-sm and down  (or hidden-md and up)
      <div class="d-sm-none"> visible-xs </div>
    </div>
  </div>
</div>

• codepen.io/_yatko/pen/ZJXQxy

Documentation

you can see this also in sockets ...

PrintWriter out = new PrintWriter(socket.getOutputStream());

out.println("hello");

DATEDIFF but note it returns an integer so if you need fractions of hours use something like this:-

CAST(DATEDIFF(ss, startDate, endDate) AS decimal(precision, scale)) / 3600

While the original question may not have been specific to a web service, here is a complete testWebService you can add to display a web service non-cached response plus the file version. We use file version instead of assembly version because we want to know a version, but with all assembly versions 1.0.0.0, the web site can be easily patched (signing and demand link still active!). Replace @Class@ with the name of the web api controller this service is embedded in. It's good for a go/nogo on a web service plus a quick version check.

  [Route("api/testWebService")]
  [AllowAnonymous]
  [HttpGet]
  public HttpResponseMessage TestWebService()
  {
      HttpResponseMessage responseMessage = Request.CreateResponse(HttpStatusCode.OK);
      string loc = Assembly.GetAssembly(typeof(@Class@)).Location;
      FileVersionInfo versionInfo = FileVersionInfo.GetVersionInfo(loc);
      responseMessage.Content = new StringContent($"<h2>The XXXXX web service GET test succeeded.</h2>{DateTime.Now}<br/><br/>File Version: {versionInfo.FileVersion}");
      responseMessage.Content.Headers.ContentType = new MediaTypeHeaderValue("text/html");
      Request.RegisterForDispose(responseMessage);
      return responseMessage;
  }

I found it also necessary to add the following to web.config under configuration to make it truly anonymous

<location path="api/testwebservice">
    <system.web>
        <authorization>
            <allow users="*" />
        </authorization>
    </system.web>
</location>

Yes.

new ArrayList<String>(){{
   add("A");
   add("B");
}}

What this is actually doing is creating a class derived from ArrayList<String> (the outer set of braces do this) and then declare a static initialiser (the inner set of braces). This is actually an inner class of the containing class, and so it'll have an implicit this pointer. Not a problem unless you want to serialise it, or you're expecting the outer class to be garbage collected.

I understand that Java 7 will provide additional language constructs to do precisely what you want.

EDIT: recent Java versions provide more usable functions for creating such collections, and are worth investigating over the above (provided at a time prior to these versions)

You need create /home/yozloy/html/test folder. Or you can use alias like below show:

location /test {
    alias /home/yozloy/html/;
    autoindex on;
}

We are also looking for some way to convert html files with complex javascript to pdf. The javasript in our files contains document.write and DOM manipulation.

We have tried using a combination of HtmlUnit to parse the files and Flying Saucer to render to pdf but the results are not satisfactory enough. It works, but in our case the pdf is not close enough to what the user wants.

If you want to try this out, here is a code snippet to convert a local html file to pdf.

URL url = new File("test.html").toURI().toURL();
WebClient webClient = new WebClient(); 
HtmlPage page = webClient.getPage(url);

OutputStream os = null;
try{
   os = new FileOutputStream("test.pdf");

   ITextRenderer renderer = new ITextRenderer();
   renderer.setDocument(page,url.toString());
   renderer.layout();
   renderer.createPDF(os);
} finally{
   if(os != null) os.close();
}

Here is the twist! There might be client browsers with enabled Javascript and who use JS compatible browsers. But for what ever the reason Javascript does not work in the browser (ex: firewall settings). According to statistics this happens every 1 out of 93 scenarios. So the server detects the client is capable of executing Javascript but actually it doesn't!

As a solution I suggest we set a cookie in client site then read it from server. If the cookie is set then JS works fine. Any thoughts ?

You need to slightly modify your compare function and use functools.cmp_to_key to pass it to sorted. Example code:

import functools

lst = [list(range(i, i+5)) for i in range(5, 1, -1)]

def fitness(item):
    return item[0]+item[1]+item[2]+item[3]+item[4]
def compare(item1, item2):
    return fitness(item1) - fitness(item2)

sorted(lst, key=functools.cmp_to_key(compare))

Output:

[[2, 3, 4, 5, 6], [3, 4, 5, 6, 7], [4, 5, 6, 7, 8], [5, 6, 7, 8, 9]]

Works :)

You can overwrite the classes in your own css using !important, e.g. if you want to get rid of the rounded corners.

.ui-corner-all
{
border-radius: 0px !important;
}

You can just add the word vectors of one sentence together. Then count the Cosine similarity of two sentence vector as the similarity of two sentence. I think that's the most easy way.

Great question; I had the same issue. Turns out that there is indeed a keyboard shortcut to bring up this list: Ctrl+Shift+Space (a variation of the basic IntelliSense shortcut of Ctrl+Space).

This warning is about unsafe use of strcpy. Try IOBname[ii]='\0'; instead.

You don't really need a specific client, it's fairly simple with most libraries. For example in jQuery you can just call the generic $.ajax function with the type of request you want to make:

$.ajax({
    url: 'http://example.com/',
    type: 'PUT',
    data: 'ID=1&Name=John&Age=10', // or $('#myform').serializeArray()
    success: function() { alert('PUT completed'); }
});

You can replace PUT with GET/POST/DELETE or whatever.

The API appears to have changed (or at least, it doesn't work for me).

Running the following in the Package Manager Console works as expected:

Update-Database -Script -SourceMigration:0

Combining two answers: 49992698 and 47761914 :

# Create service account
kubectl create serviceaccount -n kube-system cluster-admin-dashboard-sa

# Bind ClusterAdmin role to the service account
kubectl create clusterrolebinding -n kube-system cluster-admin-dashboard-sa \
  --clusterrole=cluster-admin \
  --serviceaccount=kube-system:cluster-admin-dashboard-sa

# Parse the token
TOKEN=$(kubectl describe secret -n kube-system $(kubectl get secret -n kube-system | awk '/^cluster-admin-dashboard-sa-token-/{print $1}') | awk '$1=="token:"{print $2}')

Start a timer in the constructor of your class. The interval is in milliseconds so 5*60 seconds = 300 seconds = 300000 milliseconds.

static void Main(string[] args)
{
    System.Timers.Timer timer = new System.Timers.Timer();
    timer.Interval = 300000;
    timer.Elapsed += timer_Elapsed;
    timer.Start();
}

Then call GetData() in the timer_Elapsed event like this:

static void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
    //YourCode
}

public void GenerateSnapshot(string url, string selector, string filePath)
    {
        using (IWebDriver driver = new ChromeDriver())
        {
            driver.Navigate().GoToUrl(url);
            var remElement = driver.FindElement(By.CssSelector(selector));
            Point location = remElement.Location;

            var screenshot = (driver as ChromeDriver).GetScreenshot();
            using (MemoryStream stream = new MemoryStream(screenshot.AsByteArray))
            {
                using (Bitmap bitmap = new Bitmap(stream))
                {
                    RectangleF part = new RectangleF(location.X, location.Y, remElement.Size.Width, remElement.Size.Height);
                    using (Bitmap bn = bitmap.Clone(part, bitmap.PixelFormat))
                    {
                        bn.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);
                    }
                }
            }
            driver.Close();
        }
    }

Use a backslash:

echo "\""     # Prints one " character.

    --Code for same server
USE [mydb1]
GO

INSERT INTO dbo.mytable1 (
    column1
    ,column2
    ,column3
    ,column4
    )
SELECT column1
    ,column2
    ,column3
    ,column4
FROM [mydb2].dbo.mytable2 --WHERE any condition

/*
steps-
    1-  [mydb1] means our opend connection database 
    2-  mytable1 the table in mydb1 database where we want insert record
    3-  mydb2 another database.
    4-  mytable2 is database table where u fetch record from it. 
*/

--Code for different server
        USE [mydb1]

    SELECT *
    INTO mytable1
    FROM OPENDATASOURCE (
            'SQLNCLI'
            ,'Data Source=XXX.XX.XX.XXX;Initial Catalog=mydb2;User ID=XXX;Password=XXXX'
            ).[mydb2].dbo.mytable2

        /*  steps - 
            1-  [mydb1] means our opend connection database 
            2-  mytable1 means create copy table in mydb1 database where we want 
                insert record
            3-  XXX.XX.XX.XXX - another server name.
            4-  mydb2 another server database.
            5-  write User id and Password of another server credential
            6-  mytable2 is another server table where u fetch record from it. */

try

$('#xxx').attr('disabled', true);

The issue occurred in my case because spring framework couldn't fetch the properties of nested objects. Getters/Setters is one way of solving. Making the properties public is another quick and dirty solution to validate if this is indeed the problem.

for HTML5, you can use the 'prefetch'

<link rel="prefetch" href="/style.css" as="style" />

have a look at 'preload' for js.

<link rel="preload" href="used-later.js" as="script">

The command has to be entered in the directory of the repository. The error is complaining that your current directory isn't a git repo

1. Are you in the right directory? Does typing ls show the right files?
2. Have you initialized the repository yet? Typed git init? (git-init documentation)

Either of those would cause your error.

Thanks for all answers. You are all my heros ;-)

Did in the end something like this:

d = sorted(data, key = data.get)

for key in d:
    text = data[key]

In addition to indexOf (which other posters have suggested), using prototype's Enumerable.include() can make this more neat and concise:

var list = ['a', 'b', 'c'];
if (list.include(str)) {
  // do stuff
}

interface AccountSelectParams {
  ...
}
const params = { ... };

const tmpParams: { [key in keyof AccountSelectParams]: any } | undefined = {};
  for (const key of Object.keys(params)) {
    const customKey = (key as keyof typeof params);
    if (key in params && params[customKey] && !this.state[customKey]) {
      tmpParams[customKey] = params[customKey];
    }
  }

please commented if you get the idea of this concept

Here's a nice way to get the checked radio button's value with plain JavaScript:

const form = document.forms.demo;
const checked = form.querySelector('input[name=characters]:checked');

// log out the value from the :checked radio
console.log(checked.value);

Source: https://ultimatecourses.com/blog/get-value-checked-radio-buttons

Using this HTML:

<form name="demo">
  <label>
    Mario
    <input type="radio" value="mario" name="characters" checked>
  </label>
  <label>
    Luigi
    <input type="radio" value="luigi" name="characters">
  </label>
  <label>
    Toad
    <input type="radio" value="toad" name="characters">
  </label>
</form>

You could also use Array Find the checked property to find the checked item:

Array.from(form.elements.characters).find(radio => radio.checked);

The error message is fairly self-explanatory

(a,b,c,d,e) = line.split()

expects line.split() to yield 5 elements, but in your case, it is only yielding 1 element. This could be because the data is not in the format you expect, a rogue malformed line, or maybe an empty line - there's no way to know.

To see what line is causing the issue, you could add some debug statements like this:

if len(line.split()) != 11:
    print line

As Martin suggests, you might also be splitting on the wrong delimiter.

For Groovy (build.gradle)

You should not put your signing credentials directly in the build.gradle file. Instead the credentials should come from a file not under version control.

Put a file signing.properties where the module specific build.gradle is found. Don't forget to add it to your .gitignore file!

signing.properties

storeFilePath=/home/willi/example.keystore
storePassword=secret
keyPassword=secret
keyAlias=myReleaseSigningKey

build.gradle

android {
    // ...
    signingConfigs{
        release {
            def props = new Properties()

            def fileInputStream = new FileInputStream(file('../signing.properties'))
            props.load(fileInputStream)
            fileInputStream.close()

            storeFile = file(props['storeFilePath'])
            storePassword = props['storePassword']
            keyAlias = props['keyAlias']
            keyPassword = props['keyPassword']
        }
    }

    buildTypes {
        release {
            signingConfig signingConfigs.release
            // ...
        }
    }
}

Simple! The folder named .. is the parent folder, so you can make the path to the file you need as such

var foobar = require('../config/dev/foobar.json');

If you needed to go up two levels, you would write ../../ etc

Some more details about this in this SO answer and it's comments

Differences in In python 2 and 3 version:

If you already have a default method in a class with same name and you re-declare as a same name it will appear as unbound-method call of that class instance when you wanted to instantiated it.

If you wanted class methods, but you declared them as instance methods instead.

An instance method is a method that is used when to create an instance of the class.

An example would be

   def user_group(self):   #This is an instance method
        return "instance method returning group"

Class label method:

   @classmethod
   def user_group(groups):   #This is an class-label method
        return "class method returning group"

In python 2 and 3 version differ the class @classmethod to write in python 3 it automatically get that as a class-label method and don't need to write @classmethod I think this might help you.

var result = Regex.Replace("123- abcd33", @"[0-9\-]", string.Empty);

I dont think you can connect to SQL server from client side javascripts. You need to pick up some server side language to build web applications which can interact with your database and use javascript only to make your user interface better to interact with.

you can pick up any server side scripting language based on your language preference :

• PHP
• ASP.Net
• Ruby On Rails

Update Oct 2020:

So if you are on this page scratching your head why my favicon is not working , then read along. I tried all the things (which I supposedly thought I was doing right) yet favicon was not showing up on browser tabs.

Here is one line simple cracker code that worked flawlessly:

<link rel="icon" href="https://abcde.neocities.org/bla123.jpg" size="16x16" type="image/jpg">

Notes:

1. Put the image in the ROOT folder ( In one of my unsuccessful attempts , I was not using root dir)
2. Use direct favicon url link ( instead of href="images/bla123.jpg").
3. I placed this tag just below the <title> tag in the <Header>
4. I made the favicon size 64x64 px and size was 2.16 KB

I tested it on Firefox, Chrome, Edge, and opera. OS: Win 10, Mac OSX, ios and Android .Also I did not experience any cashing issues, worked pretty much as soon as I refreshed the page.

You should be able to adjust the width using the .modal-dialog class selector (in conjunction with media queries or whatever strategy you're using for responsive design):

.modal-dialog {
    width: 400px;
}

Normally I would agree with Yaakov Ellis but in this special case there is another viable solution:

Use two tables:

Table: Item
Columns: ItemID, Title, Content
Indexes: ItemID

Table: Tag
Columns: ItemID, Title
Indexes: ItemId, Title

This has some major advantages:

First it makes development much simpler: in the three-table solution for insert and update of item you have to lookup the Tag table to see if there are already entries. Then you have to join them with new ones. This is no trivial task.

Then it makes queries simpler (and perhaps faster). There are three major database queries which you will do: Output all Tags for one Item, draw a Tag-Cloud and select all items for one Tag Title.

All Tags for one Item:

3-Table:

SELECT Tag.Title 
  FROM Tag 
  JOIN ItemTag ON Tag.TagID = ItemTag.TagID
 WHERE ItemTag.ItemID = :id

2-Table:

SELECT Tag.Title
FROM Tag
WHERE Tag.ItemID = :id

Tag-Cloud:

3-Table:

SELECT Tag.Title, count(*)
  FROM Tag
  JOIN ItemTag ON Tag.TagID = ItemTag.TagID
 GROUP BY Tag.Title

2-Table:

SELECT Tag.Title, count(*)
  FROM Tag
 GROUP BY Tag.Title

Items for one Tag:

3-Table:

SELECT Item.*
  FROM Item
  JOIN ItemTag ON Item.ItemID = ItemTag.ItemID
  JOIN Tag ON ItemTag.TagID = Tag.TagID
 WHERE Tag.Title = :title

2-Table:

SELECT Item.*
  FROM Item
  JOIN Tag ON Item.ItemID = Tag.ItemID
 WHERE Tag.Title = :title

But there are some drawbacks, too: It could take more space in the database (which could lead to more disk operations which is slower) and it's not normalized which could lead to inconsistencies.

The size argument is not that strong because the very nature of tags is that they are normally pretty small so the size increase is not a large one. One could argue that the query for the tag title is much faster in a small table which contains each tag only once and this certainly is true. But taking in regard the savings for not having to join and the fact that you can build a good index on them could easily compensate for this. This of course depends heavily on the size of the database you are using.

The inconsistency argument is a little moot too. Tags are free text fields and there is no expected operation like 'rename all tags "foo" to "bar"'.

So tldr: I would go for the two-table solution. (In fact I'm going to. I found this article to see if there are valid arguments against it.)

The plus operator converts operands to int first and then does the addition. So the result is the int. You need to cast it back to short explicitly because conversions from a "longer" type to "shorter" type a made explicit, so that you don't loose data accidentally with an implicit cast.

As to why int16 is cast to int, the answer is, because this is what is defined in C# spec. And C# is this way is because it was designed to closely match to the way how CLR works, and CLR has only 32/64 bit arithmetic and not 16 bit. Other languages on top of CLR may choose to expose this differently.

In addition to the above, I would like to point out that client-side validation (HTML code, javascript, etc.) is never enough. Also check the length server-side, or just don't check at all (if it's not so important that people can be allowed to get around it, then it's not important enough to really warrant any steps to prevent that, either).

Also, fellows, he (or she) said HTML, not XHTML. ;)

moveToTop is the proper way.

z-Index is not correct. It works initially, but multiple dialogs will continue to float underneath the one you altered with z-index. No good.

In order to populate all of the column names into a comma-delimited list for a Select statement for the solutions mentioned for this question, I use the following options as they are a little less verbose than most responses here. Although, most responses here are still perfectly acceptable, however.

1)

SELECT column_name + ',' 
FROM   information_schema.columns 
WHERE  table_name = 'YourTable'

2) This is probably the simplest approach to creating columns, if you have SQL Server SSMS.

1) Go to the table in Object Explorer and click on the + to the left of the table name or double-click the table name to open the sub list.

2) Drag the column subfolder over to the main query area and it will autopaste the entire column list for you.

Seems there is a change in handling of attribute protection and now you must whitelist params in the controller (instead of attr_accessible in the model) because the former optional gem strong_parameters became part of the Rails Core.

This should look something like this:

class PeopleController < ActionController::Base
  def create
    Person.create(person_params)
  end

private
  def person_params
    params.require(:person).permit(:name, :age)
  end
end

So params.require(:model).permit(:fields) would be used

and for nested attributes something like

params.require(:person).permit(:name, :age, pets_attributes: [:id, :name, :category])

Some more details can be found in the Ruby edge API docs and strong_parameters on github or here

Have a look at Schema and Data Comparison tools in dbForge Studio for MySQL. These tool will help you to compare, to see the differences, generate a synchronization script and synchronize two databases.

Since the release of Android Oreo and its support library (26.0.0) you can do this easily. Refer to this answer in another question.

Basically your final style will look like this:

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
   <item name="fontFamily">@font/your_font</item> <!-- target android sdk versions < 26 and > 14 -->
</style>

You can also use text() to set or get the text content of selected elements

var text1 = $("#idName").text();

if (x) 

coerces x using JavaScript's internal toBoolean (http://es5.github.com/#x9.2)

x == false

coerces both sides using internal toNumber coercion (http://es5.github.com/#x9.3) or toPrimitive for objects (http://es5.github.com/#x9.1)

For full details see http://javascriptweblog.wordpress.com/2011/02/07/truth-equality-and-javascript/

What it does:

if set to "true", any cached data used by the OSGi framework and eclipse runtime will be wiped clean. This will clean the caches used to store bundle dependency resolution and eclipse extension registry data. Using this option will force eclipse to reinitialize these caches.

How to use it:

• Edit the eclipse.ini file located in your Eclipse install directory and insert -clean as the first line.
• Or edit the shortcut you use to start Eclipse and add -clean as the first argument.
• Or create a batch or shell script that calls the Eclipse executable with the -clean argument. The advantage to this step is you can keep the script around and use it each time you want to clean out the workspace. You can name it something like eclipse-clean.bat (or eclipse-clean.sh).

(From: http://www.eclipsezone.com/eclipse/forums/t61566.html)

Other eclipse command line options: http://help.eclipse.org/indigo/index.jsp?topic=%2Forg.eclipse.platform.doc.isv%2Freference%2Fmisc%2Fruntime-options.html

$('b').contents().unwrap();

This selects all <b> elements, then uses .contents() to target the text content of the <b>, then .unwrap() to remove its parent <b> element.

For the greatest performance, always go native:

var b = document.getElementsByTagName('b');

while(b.length) {
    var parent = b[ 0 ].parentNode;
    while( b[ 0 ].firstChild ) {
        parent.insertBefore(  b[ 0 ].firstChild, b[ 0 ] );
    }
     parent.removeChild( b[ 0 ] );
}

This will be much faster than any jQuery solution provided here.

public class Student implements Comparable<Student> {

    private int sid;
    private String sname;

    public Student(int sid, String sname) {
        super();
        this.sid = sid;
        this.sname = sname;
    }

    public int getSid() {
        return sid;
    }

    public void setSid(int sid) {
        this.sid = sid;
    }

    public String getSname() {
        return sname;
    }

    public void setSname(String sname) {
        this.sname = sname;
    }

    @Override
    public String toString() {
        return "Student [sid=" + sid + ", sname=" + sname + "]";
    }

    public int compareTo(Student o) {
        if (this.getSname().compareTo(o.getSname()) > 1) {
            return toString().compareTo(o.getSname());
        } else if (this.getSname().compareTo(o.getSname()) < 1) {
            return toString().compareTo(o.getSname());
        }
        return 0;
    }

}

One of the benefit of using the resource file is accessing the resources by names, so the image can change, the image name can change, as long as the resource is kept up to date correct image will show up.

Here is a cleaner approach to accomplish this: Assuming Resources.resx is in 'UI.Images' namespace, add the namespace reference in your xaml like this:

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:UI="clr-namespace:UI.Images" 

Set your Image source like this:

<Image Source={Binding {x:Static UI:Resources.Search}} /> where 'Search' is name of the resource.

Following Steps are much enough to back button:

Step 1: This code should be in Manifest.xml

<activity android:name=".activity.ChildActivity"
        android:parentActivityName=".activity.ParentActivity"
        android:screenOrientation="portrait">
        <meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value=".activity.ParentActivity" /></activity>

Step 2: You won't give

finish();

in your Parent Activity while starting Child Activity.

Step 3: If you need to come back to Parent Activity from Child Activity, Then you just give this code for Child Activity.

startActivity(new Intent(ParentActivity.this, ChildActivity.class));

Have you tried adding the semicolon to onclick="googleMapsQuery(422111);". I don't have enough of your code to test if the missing semicolon would cause the error, but ie is more picky about syntax.

It's called a favicon. It is inserted like this:

<link rel="shortcut icon" href="favicon.ico" />

i put this code in my parent activity

List registeredReceivers = new ArrayList<>();

@Override
public Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter) {
    registeredReceivers.add(System.identityHashCode(receiver));
    return super.registerReceiver(receiver, filter);
}

@Override
public void unregisterReceiver(BroadcastReceiver receiver) {
    if(registeredReceivers.contains(System.identityHashCode(receiver)))
    super.unregisterReceiver(receiver);
}

$('.reset').on('click',function(){
           $('#upload input, #upload select').each(
                function(index){  
                    var input = $(this);
                    if(input.attr('type')=='text'){
                        document.getElementById(input.attr('id')).value = null;
                    }else if(input.attr('type')=='checkbox'){
                        document.getElementById(input.attr('id')).checked = false;
                    }else if(input.attr('type')=='radio'){
                        document.getElementById(input.attr('id')).checked = false;
                    }else{
                        document.getElementById(input.attr('id')).value = '';
                        //alert('Type: ' + input.attr('type') + ' -Name: ' + input.attr('name') + ' -Value: ' + input.val());
                    }
                }
            );
        });

In your controller, render the new action from your create action if validation fails, with an instance variable, @car populated from the user input (i.e., the params hash). Then, in your view, add a logic check (either an if block around the form or a ternary on the helpers, your choice) that automatically sets the value of the form fields to the params values passed in to @car if car exists. That way, the form will be blank on first visit and in theory only be populated on re-render in the case of error. In any case, they will not be populated unless @car is set.

public bool BulkCopy(ExcelToSqlBo objExcelToSqlBo, DataTable dt, SqlConnection conn, SqlTransaction tx)
{
    int check = 0;
    bool result = false;
    string getInsert = "";
    try
    {
        if (dt.Rows.Count > 0)
        {
            foreach (DataRow dr in dt.Rows)
            {
                if (dr != null)
                {
                    if (check == 0)
                    {
                        getInsert = "INSERT INTO [tblTemp]([firstName],[lastName],[Father],[Mother],[Category]" +
                                ",[sub_1],[sub_LG2])"+
                                " select '" + dr[0].ToString() + "','" + dr[1].ToString() + "','" + dr[2].ToString() + "','" + dr[3].ToString() + "','" + dr[4].ToString().Trim() + "','" + dr[5].ToString().Trim() + "','" + dr[6].ToString();

                        check += 1;
                    }
                    else
                    {
                        getInsert += " UNION ALL ";

                        getInsert += " select  '" + dr[0].ToString() + "','" + dr[1].ToString() + "','" + dr[2].ToString() + "','" + dr[3].ToString() + "','" + dr[4].ToString().Trim() + "','" + dr[5].ToString().Trim() + "','" + dr[6].ToString() ;

                        check++;
                    }
                }
            }
            result = common.ExecuteNonQuery(getInsert, DatabasesName, conn, tx);
        }
        else
        {
            throw new Exception("No row for insertion");
        }
        dt.Dispose();
    }
    catch (Exception ex)
    {
        dt.Dispose();
        throw new Exception("Please attach file in Proper format.");
    }
    return result;
} 

# extract numbers from garbage string:
s = '12//n,_@#$%3.14kjlw0xdadfackvj1.6e-19&*ghn334'
newstr = ''.join((ch if ch in '0123456789.-e' else ' ') for ch in s)
listOfNumbers = [float(i) for i in newstr.split()]
print(listOfNumbers)
[12.0, 3.14, 0.0, 1.6e-19, 334.0]

I ran

docker info | grep Name: | xargs | cut -d' ' -f2

inside my container.

Your 2nd attempt will work perfectly, and is actually a really good way to handle variable names that you want to have available globally. But you have a name error in the last line. Here is how it should be:

# ../myproject/main.py

# Import globfile    
import globfile

# Save myList into globfile
globfile.myList = []

# Import subfile
import subfile

# Do something
subfile.stuff()
print(globfile.myList[0])

See the last line? myList is an attr of globfile, not subfile. This will work as you want.

Mike

You can also use the first argument of the command line arguments:

String exePath = System.Environment.GetCommandLineArgs()[0]

LENGTH() does return the string length (just verified). I suppose that your data is padded with blanks - try

SELECT typ, LENGTH(TRIM(t1.typ))
FROM AUTA_VIEW t1;

instead.

As OraNob mentioned, another cause could be that CHAR is used in which case LENGTH() would also return the column width, not the string length. However, the TRIM() approach also works in this case.

"I mean the number of digits in an integer, i.e. "123" has a length of 3"

int i = 123;

// the "length" of 0 is 1:
int len = 1;

// and for numbers greater than 0:
if (i > 0) {
    // we count how many times it can be divided by 10:
    // (how many times we can cut off the last digit until we end up with 0)
    for (len = 0; i > 0; len++) {
        i = i / 10;
    }
}

// and that's our "length":
std::cout << len;

outputs 3

The reason to make an App with no activity or service could be making a Homescreen Widget app that doesn't need to be started.
Once you start a project don't create any activities. After you created the project just hit run. Android studio will say No default activity found.

Click Edit Configuration (From the Run menu) and in the Launch option part set the Launch value to Nothing. Then click ok and run the App.

(Since there is no launcher activity, No app will be show in the Apps menu.).

You're looking for the setInterval function, which runs a function every x milliseconds.

For example:

var start = new Date;

setInterval(function() {
    $('.Timer').text((new Date - start) / 1000 + " Seconds");
}, 1000);

I was looking for an easier-to-read time-loop when I encountered this question here. Something like:

for sec in max_seconds(10):
      do_something()

So I created this helper:

# allow easy time-boxing: 'for sec in max_seconds(42): do_something()'
def max_seconds(max_seconds, *, interval=1):
    interval = int(interval)
    start_time = time.time()
    end_time = start_time + max_seconds
    yield 0
    while time.time() < end_time:
        if interval > 0:
            next_time = start_time
            while next_time < time.time():
                next_time += interval
            time.sleep(int(round(next_time - time.time())))
        yield int(round(time.time() - start_time))
        if int(round(time.time() + interval)) > int(round(end_time)): 
            return

It only works with full seconds which was OK for my use-case.

Examples:

for sec in max_seconds(10) # -> 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
for sec in max_seconds(10, interval=3) # -> 0, 3, 6, 9
for sec in max_seconds(7): sleep(1.5) # -> 0, 2, 4, 6
for sec in max_seconds(8): sleep(1.5) # -> 0, 2, 4, 6, 8

Be aware that interval isn't that accurate, as I only wait full seconds (sleep never was any good for me with times < 1 sec). So if your job takes 500 ms and you ask for an interval of 1 sec, you'll get called at: 0, 500ms, 2000ms, 2500ms, 4000ms and so on. One could fix this by measuring time in a loop rather than sleep() ...

Swift: iOS
if we have string, convert it to NSDate,

var dataString = profileValue["dob"] as String
var dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"

// convert string into date
let dateValue:NSDate? = dateFormatter.dateFromString(dataString)

if you have and date picker parse date like this

// to avoid any nil value
if let isDate = dateValue {
self.datePicker.date = isDate
}

If you want multiple messages from a queue, say 10 messages, the command to use is:

rabbitmqadmin get queue=<QueueName> ackmode=ack_requeue_true count=10

If you don't want the messages requeued, just change ackmode to ack_requeue_false.

To me, this looks like the simplest/fastest:

$('form input[type=submit]').click(function() { // attach the listener to your button
   var yourWantedObjectIsHere = $(this.form);   // use the native JS object with `this`
});

int(64) or long Datatype is equivalent to BigInt.

I'm updating my answer...

antMatcher() is a method of HttpSecurity, it doesn't have anything to do with authorizeRequests(). Basically, http.antMatcher() tells Spring to only configure HttpSecurity if the path matches this pattern.

The authorizeRequests().antMatchers() is then used to apply authorization to one or more paths you specify in antMatchers(). Such as permitAll() or hasRole('USER3'). These only get applied if the first http.antMatcher() is matched.

After you clone repository repo, you can edit repo/.git/config and add some configuration like below:

[user]
    name = you_name
    password = you_password
[credential]
    helper = store

Then you won't be asked for username and password again.

You could use the 'isActive' prop like so:

const { router } = this.context;
if (router.isActive('/login')) {
    router.push('/');
}

isActive will return a true or false.

Tested with react-router 2.7

dplyr::na_if() is an option:

library(dplyr)  

df <- data_frame(col1 = c(1, 2, 3, 0),
                 col2 = c(0, 2, 3, 4),
                 col3 = c(1, 0, 3, 0),
                 col4 = c('a', 'b', 'c', 'd'))

na_if(df, 0)
# A tibble: 4 x 4
   col1  col2  col3 col4 
  <dbl> <dbl> <dbl> <chr>
1     1    NA     1 a    
2     2     2    NA b    
3     3     3     3 c    
4    NA     4    NA d

Key differences:

C++ is a general-purpose programming language, but is developed from the originally C programming language. It was developed by Bjarne Stroustrup at Bell Labs starting in 1979. C++ was originally named C with Classes. It was renamed C++ in 1983.

Visual C++, on the other hand, is not a programming language at all. It is in fact a development environment. It is an “integrated development environment (IDE) product from Microsoft for the C, C++, and C++/CLI programming languages.” Microsoft Visual C++, also known as MSVC or VC++, is sold as part of the Microsoft Visual Studio app.

If you will divide by some large value you will get a huge amount of duplicates one after other. What you need to do is to take modulo of the %RANDOM% value:

@echo off
REM 
SET maxvalue=10
SET minvalue=1

SETLOCAL 
SET /A tmpRandom=((%RANDOM%)%%(%maxvalue%))+(%minvalue%)
echo "Tmp random: %tmpRandom%"
echo "Random:  %RANDOM%"
ENDLOCAL

In my case I was processing a set of jar files contained in a directory. After I processed them I tried to delete them from that directory, but they wouldn't delete. I was using JarFile to process them and the problem was that I forgot to close the JarFile when I was done.

I real all the solution but there is not a standard solution...

JUST REMOVE NODEJS AND INSTALL THE LATEST VERSION OF NODEJS

instead of many bad shortcut solutions.

All 3 of them represent the end of a line. But...

• \r (Carriage Return) → moves the cursor to the beginning of the line without advancing to the next line
• \n (Line Feed) → moves the cursor down to the next line without returning to the beginning of the line — In a *nix environment \n moves to the beginning of the line.
• \r\n (End Of Line) → a combination of \r and \n

You have enabled CORS and enabled Access-Control-Allow-Origin : * in the server.If still you get GET method working and POST method is not working then it might be because of the problem of Content-Type and data problem.

First AngularJS transmits data using Content-Type: application/json which is not serialized natively by some of the web servers (notably PHP). For them we have to transmit the data as Content-Type: x-www-form-urlencoded

Example :-

        $scope.formLoginPost = function () {
            $http({
                url: url,
                method: "POST",
                data: $.param({ 'username': $scope.username, 'Password': $scope.Password }),
                headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
            }).then(function (response) {
                // success
                console.log('success');
                console.log("then : " + JSON.stringify(response));
            }, function (response) { // optional
                // failed
                console.log('failed');
                console.log(JSON.stringify(response));
            });
        };

Note : I am using $.params to serialize the data to use Content-Type: x-www-form-urlencoded. Alternatively you can use the following javascript function

function params(obj){
    var str = "";
    for (var key in obj) {
        if (str != "") {
            str += "&";
        }
        str += key + "=" + encodeURIComponent(obj[key]);
    }
    return str;
}

and use params({ 'username': $scope.username, 'Password': $scope.Password }) to serialize it as the Content-Type: x-www-form-urlencoded requests only gets the POST data in username=john&Password=12345 form.

I spent a while developing a better solution to this. It can handle very big numbers but once they get over 16 digits you have pass the number in as a string. Something about the limit of JavaScript numbers.

    function numberToEnglish( n ) {
        
        var string = n.toString(), units, tens, scales, start, end, chunks, chunksLen, chunk, ints, i, word, words, and = 'and';

        /* Remove spaces and commas */
        string = string.replace(/[, ]/g,"");

        /* Is number zero? */
        if( parseInt( string ) === 0 ) {
            return 'zero';
        }
        
        /* Array of units as words */
        units = [ '', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'ten', 'eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen' ];
        
        /* Array of tens as words */
        tens = [ '', '', 'twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety' ];
        
        /* Array of scales as words */
        scales = [ '', 'thousand', 'million', 'billion', 'trillion', 'quadrillion', 'quintillion', 'sextillion', 'septillion', 'octillion', 'nonillion', 'decillion', 'undecillion', 'duodecillion', 'tredecillion', 'quatttuor-decillion', 'quindecillion', 'sexdecillion', 'septen-decillion', 'octodecillion', 'novemdecillion', 'vigintillion', 'centillion' ];
        
        /* Split user argument into 3 digit chunks from right to left */
        start = string.length;
        chunks = [];
        while( start > 0 ) {
            end = start;
            chunks.push( string.slice( ( start = Math.max( 0, start - 3 ) ), end ) );
        }
        
        /* Check if function has enough scale words to be able to stringify the user argument */
        chunksLen = chunks.length;
        if( chunksLen > scales.length ) {
            return '';
        }
        
        /* Stringify each integer in each chunk */
        words = [];
        for( i = 0; i < chunksLen; i++ ) {
            
            chunk = parseInt( chunks[i] );
            
            if( chunk ) {
                
                /* Split chunk into array of individual integers */
                ints = chunks[i].split( '' ).reverse().map( parseFloat );
            
                /* If tens integer is 1, i.e. 10, then add 10 to units integer */
                if( ints[1] === 1 ) {
                    ints[0] += 10;
                }
                
                /* Add scale word if chunk is not zero and array item exists */
                if( ( word = scales[i] ) ) {
                    words.push( word );
                }
                
                /* Add unit word if array item exists */
                if( ( word = units[ ints[0] ] ) ) {
                    words.push( word );
                }
                
                /* Add tens word if array item exists */
                if( ( word = tens[ ints[1] ] ) ) {
                    words.push( word );
                }
                
                /* Add 'and' string after units or tens integer if: */
                if( ints[0] || ints[1] ) {
                    
                    /* Chunk has a hundreds integer or chunk is the first of multiple chunks */
                    if( ints[2] || ! i && chunksLen ) {
                        words.push( and );
                    }
                
                }
                
                /* Add hundreds word if array item exists */
                if( ( word = units[ ints[2] ] ) ) {
                    words.push( word + ' hundred' );
                }
                
            }
            
        }
        
        return words.reverse().join( ' ' );
        
    }


// - - - - - Tests - - - - - -
function test(v) {
  var sep = ('string'==typeof v)?'"':'';
  console.log("numberToEnglish("+sep + v.toString() + sep+") = "+numberToEnglish(v));
}
test(2);
test(721);
test(13463);
test(1000001);
test("21,683,200,000,621,384");

Literals that start with 0x are hexadecimal integers. (base 16)

The number 0x6400 is 25600.

6 * 16^3 + 4 * 16^2 = 25600

For an example including letters (also used in hexadecimal notation where A = 10, B = 11 ... F = 15)

The number 0x6BF0 is 27632.

6 * 16^3 + 11 * 16^2 + 15 * 16^1 = 27632
24576    + 2816      + 240       = 27632

Use mvn dependency:purge-local-repository -DactTransitively=false -Dskip=true if you have maven plugins as one of the modules. Otherwise Maven will try to recompile them, thus downloading the dependencies again.

Why don't you do replace , comma and split('') the string like this which will result into ['0', '1'], furthermore, you could wrap the result into parseInt() to transform element into integer type.

it('convert string to array', function () {
  expect('0,1'.replace(',', '').split('')).toEqual(['0','1'])
});

On Laravel 5.5, the cleanest way to do this is:

Theme::with('user:userid,name,address')->get()

You add a colon and the fields you wish to select separated by a comma and without a space between them.

You can try this it will recursively find all key values in a json object and constructs as a map . You can simply get which key you want from the Map .

public static Map<String,String> parse(JSONObject json , Map<String,String> out) throws JSONException{
    Iterator<String> keys = json.keys();
    while(keys.hasNext()){
        String key = keys.next();
        String val = null;
        try{
             JSONObject value = json.getJSONObject(key);
             parse(value,out);
        }catch(Exception e){
            val = json.getString(key);
        }

        if(val != null){
            out.put(key,val);
        }
    }
    return out;
}

 public static void main(String[] args) throws JSONException {

    String json = "{'ipinfo': {'ip_address': '131.208.128.15','ip_type': 'Mapped','Location': {'continent': 'north america','latitude': 30.1,'longitude': -81.714,'CountryData': {'country': 'united states','country_code': 'us'},'region': 'southeast','StateData': {'state': 'florida','state_code': 'fl'},'CityData': {'city': 'fleming island','postal_code': '32003','time_zone': -5}}}}";

    JSONObject object = new JSONObject(json);

    JSONObject info = object.getJSONObject("ipinfo");

    Map<String,String> out = new HashMap<String, String>();

    parse(info,out);

    String latitude = out.get("latitude");
    String longitude = out.get("longitude");
    String city = out.get("city");
    String state = out.get("state");
    String country = out.get("country");
    String postal = out.get("postal_code");

    System.out.println("Latitude : " + latitude + " LongiTude : " + longitude + " City : "+city + " State : "+ state + " Country : "+country+" postal "+postal);

    System.out.println("ALL VALUE " + out);

}

Output:

    Latitude : 30.1 LongiTude : -81.714 City : fleming island State : florida Country : united states postal 32003
ALL VALUE {region=southeast, ip_type=Mapped, state_code=fl, state=florida, country_code=us, city=fleming island, country=united states, time_zone=-5, ip_address=131.208.128.15, postal_code=32003, continent=north america, longitude=-81.714, latitude=30.1}

What the hell of all this work anthers

it's too simple

if you want a list of how much productId in each keyword here it's the code

SELECT count(productId),  keyword  FROM `Table_name` GROUP BY keyword; 

Here's one view on the singleton methods:

I have found these various "singleton" methods to be useful for passing a single value to an API that requires a collection of that value. Of course, this works best when the code processing the passed-in value does not need to add to the collection.

is that what your looking for?

<table border="1">
<tr>
 <th scope="col">Header</th>
 <th scope="col">Header</th>
 <th scope="col" colspan="2">Header</th>
</tr>
<tr>
 <th scope="row">&nbsp;</th>
 <td>&nbsp;</td>
 <td>Split this one</td>
 <td>into two columns</td>
</tr>
</table>  

I hit on the same problem and finally find the working solution.

1. in the string.xml file, define:

   <string name="textWithHtml">The URL link is &lt;a href="http://www.google.com">Google&lt;/a></string>
   

Replace the "<" less than character with HTML escaped character.

2. In Java code:

   String text = v.getContext().getString(R.string.textWithHtml);
   textView.setText(Html.fromHtml(text));
   textView.setMovementMethod(LinkMovementMethod.getInstance());
   

And the TextBox will correctly display the text with clickable anchor link

Try:

$string = "'name', 'name2', 'name3',";
$string = rtrim($string,',');

How to specify the JDK version?

Use any of three ways: (1) Spring Boot feature, or use Maven compiler plugin with either (2) source & target or (3) with release.

Spring Boot

1. <java.version> is not referenced in the Maven documentation.
   It is a Spring Boot specificity.
   It allows to set the source and the target java version with the same version such as this one to specify java 1.8 for both :

   1.8

Feel free to use it if you use Spring Boot.

maven-compiler-plugin with source & target

2. Using maven-compiler-plugin or maven.compiler.source/maven.compiler.target properties are equivalent.

That is indeed :

<plugins>
    <plugin>    
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
            <source>1.8</source>
            <target>1.8</target>
        </configuration>
    </plugin>
</plugins>

is equivalent to :

<properties>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
</properties>

according to the Maven documentation of the compiler plugin since the <source> and the <target> elements in the compiler configuration use the properties maven.compiler.source and maven.compiler.target if they are defined.

source

The -source argument for the Java compiler.
Default value is: 1.6.
User property is: maven.compiler.source.

target

The -target argument for the Java compiler.
Default value is: 1.6.
User property is: maven.compiler.target.

About the default values for source and target, note that since the 3.8.0 of the maven compiler, the default values have changed from 1.5 to 1.6.

maven-compiler-plugin with release instead of source & target

3. The maven-compiler-plugin 3.6 and later versions provide a new way :

   org.apache.maven.plugins maven-compiler-plugin 3.8.0 9

You could also declare just :

<properties>
    <maven.compiler.release>9</maven.compiler.release>
</properties>

But at this time it will not work as the maven-compiler-plugin default version you use doesn't rely on a recent enough version.

The Maven release argument conveys release : a new JVM standard option that we could pass from Java 9 :

Compiles against the public, supported and documented API for a specific VM version.

This way provides a standard way to specify the same version for the source, the target and the bootstrap JVM options.
Note that specifying the bootstrap is a good practice for cross compilations and it will not hurt if you don't make cross compilations either.

Which is the best way to specify the JDK version?

The first way (<java.version>) is allowed only if you use Spring Boot.

For Java 8 and below :

About the two other ways : valuing the maven.compiler.source/maven.compiler.target properties or using the maven-compiler-plugin, you can use one or the other. It changes nothing in the facts since finally the two solutions rely on the same properties and the same mechanism : the maven core compiler plugin.

Well, if you don't need to specify other properties or behavior than Java versions in the compiler plugin, using this way makes more sense as this is more concise:

<properties>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
</properties>

From Java 9 :

The release argument (third point) is a way to strongly consider if you want to use the same version for the source and the target.

What happens if the version differs between the JDK in JAVA_HOME and which one specified in the pom.xml?

It is not a problem if the JDK referenced by the JAVA_HOME is compatible with the version specified in the pom but to ensure a better cross-compilation compatibility think about adding the bootstrap JVM option with as value the path of the rt.jar of the target version.

An important thing to consider is that the source and the target version in the Maven configuration should not be superior to the JDK version referenced by the JAVA_HOME.
A older version of the JDK cannot compile with a more recent version since it doesn't know its specification.

To get information about the source, target and release supported versions according to the used JDK, please refer to java compilation : source, target and release supported versions.

How handle the case of JDK referenced by the JAVA_HOME is not compatible with the java target and/or source versions specified in the pom?

For example, if your JAVA_HOME refers to a JDK 1.7 and you specify a JDK 1.8 as source and target in the compiler configuration of your pom.xml, it will be a problem because as explained, the JDK 1.7 doesn't know how to compile with.
From its point of view, it is an unknown JDK version since it was released after it.
In this case, you should configure the Maven compiler plugin to specify the JDK in this way :

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <configuration>
        <source>1.8</source>
        <target>1.8</target>
        <compilerVersion>1.8</compilerVersion>      
        <fork>true</fork>
        <executable>D:\jdk1.8\bin\javac</executable>                
    </configuration>
</plugin>

You could have more details in examples with maven compiler plugin.

It is not asked but cases where that may be more complicated is when you specify source but not target. It may use a different version in target according to the source version. Rules are particular : you can read about them in the Cross-Compilation Options part.

Why the compiler plugin is traced in the output at the execution of the Maven package goal even if you don't specify it in the pom.xml?

To compile your code and more generally to perform all tasks required for a maven goal, Maven needs tools. So, it uses core Maven plugins (you recognize a core Maven plugin by its groupId : org.apache.maven.plugins) to do the required tasks : compiler plugin for compiling classes, test plugin for executing tests, and so for... So, even if you don't declare these plugins, they are bound to the execution of the Maven lifecycle.
At the root dir of your Maven project, you can run the command : mvn help:effective-pom to get the final pom effectively used. You could see among other information, attached plugins by Maven (specified or not in your pom.xml), with the used version, their configuration and the executed goals for each phase of the lifecycle.

In the output of the mvn help:effective-pom command, you could see the declaration of these core plugins in the <build><plugins> element, for example :

...
<plugin>
   <artifactId>maven-clean-plugin</artifactId>
   <version>2.5</version>
   <executions>
     <execution>
       <id>default-clean</id>
       <phase>clean</phase>
       <goals>
         <goal>clean</goal>
       </goals>
     </execution>
   </executions>
 </plugin>
 <plugin>
   <artifactId>maven-resources-plugin</artifactId>
   <version>2.6</version>
   <executions>
     <execution>
       <id>default-testResources</id>
       <phase>process-test-resources</phase>
       <goals>
         <goal>testResources</goal>
       </goals>
     </execution>
     <execution>
       <id>default-resources</id>
       <phase>process-resources</phase>
       <goals>
         <goal>resources</goal>
       </goals>
     </execution>
   </executions>
 </plugin>
 <plugin>
   <artifactId>maven-compiler-plugin</artifactId>
   <version>3.1</version>
   <executions>
     <execution>
       <id>default-compile</id>
       <phase>compile</phase>
       <goals>
         <goal>compile</goal>
       </goals>
     </execution>
     <execution>
       <id>default-testCompile</id>
       <phase>test-compile</phase>
       <goals>
         <goal>testCompile</goal>
       </goals>
     </execution>
   </executions>
 </plugin>
  ...

You can have more information about it in the introduction of the Maven lifeycle in the Maven documentation.

Nevertheless, you can declare these plugins when you want to configure them with other values as default values (for example, you did it when you declared the maven-compiler plugin in your pom.xml to adjust the JDK version to use) or when you want to add some plugin executions not used by default in the Maven lifecycle.

The correct way to do this is:

typedef void (*callback_function)(void); // type for conciseness

callback_function disconnectFunc; // variable to store function pointer type

void D::setDisconnectFunc(callback_function pFunc)
{
    disconnectFunc = pFunc; // store
}

void D::disconnected()
{
    disconnectFunc(); // call
    connected = false;
}

The best way to go is:

TextView tv = findViewById(R.id.textView);
tv.setTypeface(Typeface.DEFAULT_BOLD);

You have it reversed. The 100 should be the first parameter (it's the key) and the "one" should be the second parameter (it's the value).

Read the javadoc for HashMap and that might help you: HashMap

To get the value, use hashmap.get(100).

df = df.merge(same.drop_duplicates(), on=['col1','col2'], 
               how='left', indicator=True)

df[df['_merge'] == 'left_only'].to_csv('output.csv')

If you get the same value for both property and attribute, but still sees it different on the HTML try this to get the HTML one:

$('#inputID').context.defaultValue;

You can change layout visibility just in the same way as for regular view. Use setVisibility(View.GONE) etc. All layouts are just Views, they have View as their parent.

Here's yet another, slightly different answer with a few enhancements.

This code takes the .jar right out of the .aar. Personally, that gives me a bit more confidence that the bits being shipped via .jar are the same as the ones shipped via .aar. This also means that if you're using ProGuard, the output jar will be obfuscated as desired.

I also added a super "makeJar" task, that makes jars for all build variants.

task(makeJar) << {
    // Empty. We'll add dependencies for this task below
}

// Generate jar creation tasks for all build variants
android.libraryVariants.all { variant ->
    String taskName = "makeJar${variant.name.capitalize()}"

    // Create a jar by extracting it from the assembled .aar
    // This ensures that products distributed via .aar and .jar exactly the same bits
    task (taskName, type: Copy) {
        String archiveName = "${project.name}-${variant.name}"
        String outputDir = "${buildDir.getPath()}/outputs"

        dependsOn "assemble${variant.name.capitalize()}"
        from(zipTree("${outputDir}/aar/${archiveName}.aar"))
        into("${outputDir}/jar/")
        include('classes.jar')
        rename ('classes.jar', "${archiveName}-${variant.mergedFlavor.versionName}.jar")
    }

    makeJar.dependsOn tasks[taskName]
}

For the curious reader, I struggled to determine the correct variables and parameters that the com.android.library plugin uses to name .aar files. I finally found them in the Android Open Source Project here.

There are definitely different ways to do this depending on your needs.

One way I use a UI-updating thread (that's not the main UI thread) is to have the thread start a loop where the entire logical processing loop is invoked onto the UI thread.

Example:

public SomeFunction()
{
    bool working = true;
    Thread t = new Thread(() =>
    {
        // Don't put the working bool in here, otherwise it will 
        // belong to the new thread and not the main UI thread.
        while (working)
        {
            Application.Current.Dispatcher.Invoke(() =>
            {
                // Put your entire logic code in here.
                // All of this code will process on the main UI thread because
                //  of the Invoke.
                // By doing it this way, you don't have to worry about Invoking individual
                //  elements as they are needed.
            });
        }
    });
}

With this, code executes entirely on main UI thread. This can be a pro for amateur programmers that have difficulty wrapping their heads around cross-threaded operations. However, it can easily become a con with more complex UIs (especially if performing animations). Really, this is only to fake a system of updating the UI and then returning to handle any events that have fired in lieu of efficient cross-threading operations.

I frequently find myself writing command line utilities wherein the first argument is meant to refer to one of many different classes. For example ./something.py feature command —-arguments, where Feature is a class and command is a method on that class. Here's a base class that makes this easy.

The assumption is that this base class resides in a directory alongside all of its subclasses. You can then call ArgBaseClass(foo = bar).load_subclasses() which will return a dictionary. For example, if the directory looks like this:

• arg_base_class.py
• feature.py

Assuming feature.py implements class Feature(ArgBaseClass), then the above invocation of load_subclasses will return { 'feature' : <Feature object> }. The same kwargs (foo = bar) will be passed into the Feature class.

#!/usr/bin/env python3
import os, pkgutil, importlib, inspect

class ArgBaseClass():
    # Assign all keyword arguments as properties on self, and keep the kwargs for later.
    def __init__(self, **kwargs):
        self._kwargs = kwargs
        for (k, v) in kwargs.items():
            setattr(self, k, v)
        ms = inspect.getmembers(self, predicate=inspect.ismethod)
        self.methods = dict([(n, m) for (n, m) in ms if not n.startswith('_')])

    # Add the names of the methods to a parser object.
    def _parse_arguments(self, parser):
        parser.add_argument('method', choices=list(self.methods))
        return parser

    # Instantiate one of each of the subclasses of this class.
    def load_subclasses(self):
        module_dir = os.path.dirname(__file__)
        module_name = os.path.basename(os.path.normpath(module_dir))
        parent_class = self.__class__
        modules = {}
        # Load all the modules it the package:
        for (module_loader, name, ispkg) in pkgutil.iter_modules([module_dir]):
            modules[name] = importlib.import_module('.' + name, module_name)

        # Instantiate one of each class, passing the keyword arguments.
        ret = {}
        for cls in parent_class.__subclasses__():
            path = cls.__module__.split('.')
            ret[path[-1]] = cls(**self._kwargs)
        return ret

I have an Xml File books.xml

<ParameterDBConfig>
    <ID Definition="1" />
</ParameterDBConfig>

Program:

XmlDocument doc = new XmlDocument();
doc.Load("D:/siva/books.xml");
XmlNodeList elemList = doc.GetElementsByTagName("ID");     
for (int i = 0; i < elemList.Count; i++)     
{
    string attrVal = elemList[i].Attributes["Definition"].Value;
}

Now, attrVal has the value of ID.

public class OneWayFragment extends Fragment {

    ImageView img_search;


public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {


        View view = inflater.inflate(R.layout.one_way_fragment, container, false);
        img_search = (ImageView) view.findViewById(R.id.search);


        img_search.setOnClickListener(new View.OnClickListener() {
            @Override`enter code here`
            public void onClick(View v) {
                Intent displayFlights = new Intent(getActivity(), SelectFlight.class);
                startActivity(displayFlights);
            }
        });

Below code might help you to copy the first level objects

let original = [{ a: 1 }, {b:1}]
const copy = [ ...original ].map(item=>({...item}))

so for below case, values remains intact

copy[0].a = 23
console.log(original[0].a) //logs 1 -- value didn't change voila :)

Fails for this case

let original = [{ a: {b:2} }, {b:1}]
const copy = [ ...original ].map(item=>({...item}))
copy[0].a.b = 23;
console.log(original[0].a) //logs 23 -- lost the original one :(

Final advice:

I would say go for lodash cloneDeep API which helps you to copy the objects inside objects completely dereferencing from original one's. This can be installed as a separate module.

Refer documentation: https://github.com/lodash/lodash

Individual Package : https://www.npmjs.com/package/lodash.clonedeep

getElementById("id").removeAttribute("style");

if you are using jQuery then

$("#id").removeClass("classname");

The answer to my own question is, I think, to use tomcat7.exe:

cd $CATALINA_HOME
.\bin\service.bat install tomcat
.\bin\tomcat7.exe //US//tomcat7 --JvmMs=512 --JvmMx=1024 --JvmSs=1024

Also, you can launch the UI tool mentioned by BalusC without the system tray or using the installer with tomcat7w.exe

.\bin\tomcat7w.exe //ES//tomcat

An additional note to this:

Setting the --JvmXX parameters (through the UI tool or the command line) may not be enough. You may also need to specify the JVM memory values explicitly. From the command line it may look like this:

bin\tomcat7w.exe //US//tomcat7 --JavaOptions=-Xmx=1024;-Xms=512;..

Be careful not to override the other JavaOption values. You can try updating bin\service.bat or use the UI tool and append the java options (separate each value with a new line).

I = imread('peppers.png');
H = fspecial('average', [5 5]);
I = imfilter(I, H);
imshow(I)

Note that filters can be applied to intensity images (2D matrices) using filter2, while on multi-dimensional images (RGB images or 3D matrices) imfilter is used.

Also on Intel processors, imfilter can use the Intel Integrated Performance Primitives (IPP) library to accelerate execution.

Because your else isn't attached to anything. The if without braces only encompasses the single statement that immediately follows it.

if (choice==5)
{
    System.out.println("End of Game\n Thank you for playing with us!");
    break;
}
else
{
   System.out.println("Not a valid choice!\n Please try again...\n");
}

Not using braces is generally viewed as a bad practice because it can lead to the exact problems you encountered.

In addition, using a switch here would make more sense.

int choice;
boolean keepGoing = true;
while(keepGoing)
{
    System.out.println("---> Your choice: ");
    choice = input.nextInt();
    switch(choice)
    {
        case 1: 
            playGame();
            break;
        case 2: 
            loadGame();
            break;
        // your other cases
        // ...
        case 5: 
            System.out.println("End of Game\n Thank you for playing with us!");
            keepGoing = false;
            break;
        default:
            System.out.println("Not a valid choice!\n Please try again...\n");
     }
 }         

Note that instead of an infinite for loop I used a while(boolean), making it easy to exit the loop. Another approach would be using break with labels.

You can also add an OnClick Method to the editText after

_editText.setSelectAllOnFocus(true);

and in that:

_editText.clearFocus();
_editText.requestFocus();

As soon as you click the editText the whole text is selected.

It's evident that you've managed to mess up your PATH variable. (Your current PATH doesn't contain any location where common utilities are located.)

Try:

PATH=/bin:/usr/bin:/usr/local/bin:${PATH}
export PATH

Alternatively, for "resetting" zsh, specify the complete path to the shell:

exec /bin/zsh

or

exec /usr/bin/zsh

@EvilDr You can create an IUSR_[identifier] account within your AD environment and let the particular application pool run under that IUSR_[identifier] account:

"Application pool" > "Advanced Settings" > "Identity" > "Custom account"

Set your website to "Applicaton user (pass-through authentication)" and not "Specific user", in the Advanced Settings.

Now give that IUSR_[identifier] the appropriate NTFS permissions on files and folders, for example: modify on companydata.

There are several ways of consoling out the variable within a string.

Method 1 :

console.log("story", name, "story");

Benefit : if name is a JSON object, it will not be printed as "story" [object Object] "story"

Method 2 :

console.log("story " + name + " story");

Method 3: When using ES6 as mentioned above

console.log(`story ${name} story`);

Benefit: No need of extra , or +

Method 4:

console.log('story %s story',name);

Benefit: the string becomes more readable.

A couple of minor notes and tweaks on the previous regexes:

You'll want to do it globally in case the class list has the class name more than once. And, you'll probably want to strip spaces from the ends of the class list and convert multiple spaces to one space to keep from getting runs of spaces. None of these things should be a problem if the only code dinking with the class names uses the regex below and removes a name before adding it. But. Well, who knows who might be dinking with the class name list.

This regex is case insensitive so that bugs in class names may show up before the code is used on a browser that doesn't care about case in class names.

var s = "testing   one   four  one  two";
var cls = "one";
var rg          = new RegExp("(^|\\s+)" + cls + "(\\s+|$)", 'ig');
alert("[" + s.replace(rg, ' ') + "]");
var cls = "test";
var rg          = new RegExp("(^|\\s+)" + cls + "(\\s+|$)", 'ig');
alert("[" + s.replace(rg, ' ') + "]");
var cls = "testing";
var rg          = new RegExp("(^|\\s+)" + cls + "(\\s+|$)", 'ig');
alert("[" + s.replace(rg, ' ') + "]");
var cls = "tWo";
var rg          = new RegExp("(^|\\s+)" + cls + "(\\s+|$)", 'ig');
alert("[" + s.replace(rg, ' ') + "]");

You could also write up your own user functions to handle dates in the format you choose. SQLite has a fairly simple method for writing your own user functions. For example, I wrote a few to add time durations together.

You shouldn't use both ngRoute and UI-router. Here's a sample code for UI-router:

repoApp.config(function($stateProvider, $urlRouterProvider) {_x000D_
  _x000D_
  $stateProvider_x000D_
    .state('state1', {_x000D_
      url: "/state1",_x000D_
      templateUrl: "partials/state1.html",_x000D_
      controller: 'YourCtrl'_x000D_
    })_x000D_
    _x000D_
    .state('state2', {_x000D_
      url: "/state2",_x000D_
      templateUrl: "partials/state2.html",_x000D_
      controller: 'YourOtherCtrl'_x000D_
    });_x000D_
    $urlRouterProvider.otherwise("/state1");_x000D_
});_x000D_
//etc.

You can find a great answer on the difference between these two in this thread: What is the difference between angular-route and angular-ui-router?

You can also consult UI-Router's docs here: https://github.com/angular-ui/ui-router

None of these responses really seem to answer the question. Here's something similar to what I'm utilizing on a site of mine by targeting a menu item by its title/name:

function add_class_to_menu_item($sorted_menu_objects, $args) {
    $theme_location = 'primary_menu';  // Name, ID, or Slug of the target menu location
    $target_menu_title = 'Link';  // Name/Title of the menu item you want to target
    $class_to_add = 'my_own_class';  // Class you want to add

    if ($args->theme_location == $theme_location) {
        foreach ($sorted_menu_objects as $key => $menu_object) {
            if ($menu_object->title == $target_menu_title) {
                $menu_object->classes[] = $class_to_add;
                break; // Optional.  Leave if you're only targeting one specific menu item
            }
        }
    }

    return $sorted_menu_objects;
}
add_filter('wp_nav_menu_objects', 'add_class_to_menu_item', 10, 2);

Iterable were introduced to use in for each loop in java

public interface Collection<E> extends Iterable<E>  

Iterator is class that manages iteration over an Iterable. It maintains a state of where we are in the current iteration, and knows what the next element is and how to get it.

Sharing my notes which I usually maintain while reading from Internet, I hope it may be helpful to someone

Candidate Key or available keys

Candidate keys are those keys which is candidate for primary key of a table. In simple words we can understand that such type of keys which full fill all the requirements of primary key which is not null and have unique records is a candidate for primary key. So thus type of key is known as candidate key. Every table must have at least one candidate key but at the same time can have several.

Primary Key

Such type of candidate key which is chosen as a primary key for table is known as primary key. Primary keys are used to identify tables. There is only one primary key per table. In SQL Server when we create primary key to any table then a clustered index is automatically created to that column.

Foreign Key

Foreign key are those keys which is used to define relationship between two tables. When we want to implement relationship between two tables then we use concept of foreign key. It is also known as referential integrity. We can create more than one foreign key per table. Foreign key is generally a primary key from one table that appears as a field in another where the first table has a relationship to the second. In other words, if we had a table A with a primary key X that linked to a table B where X was a field in B, then X would be a foreign key in B.

Alternate Key or Secondary

If any table have more than one candidate key, then after choosing primary key from those candidate key, rest of candidate keys are known as an alternate key of that table. Like here we can take a very simple example to understand the concept of alternate key. Suppose we have a table named Employee which has two columns EmpID and EmpMail, both have not null attributes and unique value. So both columns are treated as candidate key. Now we make EmpID as a primary key to that table then EmpMail is known as alternate key.

Composite Key

When we create keys on more than one column then that key is known as composite key. Like here we can take an example to understand this feature. I have a table Student which has two columns Sid and SrefNo and we make primary key on these two column. Then this key is known as composite key.

Natural keys

A natural key is one or more existing data attributes that are unique to the business concept. For the Customer table there was two candidate keys, in this case CustomerNumber and SocialSecurityNumber. Link http://www.agiledata.org/essays/keys.html

Surrogate key

Introduce a new column, called a surrogate key, which is a key that has no business meaning. An example of which is the AddressID column of the Address table in Figure 1. Addresses don't have an "easy" natural key because you would need to use all of the columns of the Address table to form a key for itself (you might be able to get away with just the combination of Street and ZipCode depending on your problem domain), therefore introducing a surrogate key is a much better option in this case. Link http://www.agiledata.org/essays/keys.html

Unique key

A unique key is a superkey--that is, in the relational model of database organization, a set of attributes of a relation variable for which it holds that in all relations assigned to that variable, there are no two distinct tuples (rows) that have the same values for the attributes in this set

Aggregate or Compound keys

When more than one column is combined to form a unique key, their combined value is used to access each row and maintain uniqueness. These keys are referred to as aggregate or compound keys. Values are not combined, they are compared using their data types.

Simple key

Simple key made from only one attribute.

Super key

A superkey is defined in the relational model as a set of attributes of a relation variable (relvar) for which it holds that in all relations assigned to that variable there are no two distinct tuples (rows) that have the same values for the attributes in this set. Equivalently a super key can also be defined as a set of attributes of a relvar upon which all attributes of the relvar are functionally dependent.

Partial Key or Discriminator key

It is a set of attributes that can uniquely identify weak entities and that are related to same owner entity. It is sometime called as Discriminator.

General

Single elements of a tuple a can be accessed -in an indexed array-like fashion-

via a[0], a[1], ... depending on the number of elements in the tuple.

Example

If your tuple is a=(3,"a")

• a[0] yields 3,
• a[1] yields "a"

Concrete answer to question

def tup():
  return (3, "hello")

tup() returns a 2-tuple.

In order to "solve"

i = 5 + tup()  # I want to add just the three

you select the 3 by

tup()[0|    #first element

so in total

i = 5 + tup()[0]

Alternatives

Go with namedtuple that allows you to access tuple elements by name (and by index). Details at https://docs.python.org/3/library/collections.html#collections.namedtuple

>>> import collections
>>> MyTuple=collections.namedtuple("MyTuple", "mynumber, mystring")
>>> m = MyTuple(3, "hello")
>>> m[0]
3
>>> m.mynumber
3
>>> m[1]
'hello'
>>> m.mystring
'hello'

for (char letter = 'A'; letter <= 'Z'; letter++)
{
     Debug.WriteLine(letter);
}

Netscantools Pro Ping can do ICMP, UDP, and TCP.

Send a POST request with content type = 'form-data':

import requests
files = {
    'username': (None, 'myusername'),
    'password': (None, 'mypassword'),
}
response = requests.post('https://example.com/abc', files=files)

Using docker-compose, services are exposed to each other by name by default. Docs.
You could also specify an alias like;

version: '2.1'
services:
  mongo:
    image: mongo:3.2.11
  redis:
    image: redis:3.2.10
  api:
    image: some-image
    depends_on:
      - mongo
      - solr
    links:
      - "mongo:mongo.openconceptlab.org"
      - "solr:solr.openconceptlab.org"
      - "some-service:some-alias"

And then access the service using the specified alias as a host name, e.g mongo.openconceptlab.org for mongo in this case.

Ok it turns out I was doing something stupid. I hadn't appended the new file name to the path.

I had

rootDirectory = "C:\\safesite_documents"

but it should have been

rootDirectory = "C:\\safesite_documents\\newFile.jpg" 

Sorry it was a stupid mistake as always.

Invoke-Sqlcmd -Query "sp_who" -ServerInstance . -QueryTimeout 3

To add to the response from @Anish, if you are having issues with not seeing the text when exporting the SVG to an image, you can create a recursive function to loop through the children of the SVGDocument, try to cast it to a SvgText if possible (add your own error checking) and set the font family and style.

    foreach(var child in svgDocument.Children)
    {
        SetFont(child);
    }

    public void SetFont(SvgElement element)
    {
        foreach(var child in element.Children)
        {
            SetFont(child); //Call this function again with the child, this will loop
                            //until the element has no more children
        }

        try
        {
            var svgText = (SvgText)parent; //try to cast the element as a SvgText
                                           //if it succeeds you can modify the font

            svgText.Font = new Font("Arial", 12.0f);
            svgText.FontSize = new SvgUnit(12.0f);
        }
        catch
        {

        }
    }

Let me know if there are questions.

Some extensions like blocksite use the accessibility service API to deploy extension like features to Chrome on Android. Might be worth a look through the play store. Otherwise, Firefox is your best bet, though many extensions don't work on mobile for some reason.

https://play.google.com/store/apps/details?id=co.blocksite&hl=en_US

As @Agent_9191 and @partick mentioned you should use

$('tbody :visible').highlight(myArray[i]); // works for all children of tbody that are visible

or

$('tbody:visible').highlight(myArray[i]); // works for all visible tbodys

Additionally, since you seem to be applying a class to the highlighted words, instead of using jquery to alter the background for all matched highlights, just create a css rule with the background color you need and it gets applied directly once you assign the class.

.highlight { background-color: #FFFF88; }

You are not set the startup project so only this error occur. Mostly this problem occur when your working with more project in the single solution.

First right click on your project and "Set as Start Up Project" and/or right click on the start up file inside the sleeted project and click "Set StartUp File".

Here is how you can do it using strtotime(),

<?php
    $date = strtotime("3 October 2005");
    $d = strtotime("+7 day", $date);
    echo "Created date is " . date("Y-m-d h:i:sa", $d) . "<br>";
?>

I like Christian Roy's solution:

###  .htaccess

<IfModule mod_rewrite.c>

    # Tell PHP that the mod_rewrite module is ENABLED.
    SetEnv HTTP_MOD_REWRITE On

    RewriteEngine on
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    # The rest of your rewrite rules here

</IfModule>

Then, you can check in your PHP code for

    array_key_exists('HTTP_MOD_REWRITE', $_SERVER);

No idea if this works also with IIS (I have no way to check) but the odds are good.

Take a look at the jQuery alphanumeric plugin. https://github.com/KevinSheedy/jquery.alphanum

//All of these are from their demo page
//only numbers and alpha characters
$('.sample1').alphanumeric();
//only numeric
$('.sample4').numeric();
//only numeric and the .
$('.sample5').numeric({allow:"."});
//all alphanumeric except the . 1 and a
$('.sample6').alphanumeric({ichars:'.1a'});

Somewhat similar to your original attempt, but more Pythonic, is to use Python's standard negative-indexing convention to count backwards from the end:

df[df.columns[-1]]

I think the above answer posted by Jeremy Thompson is the correct one, but I don't have enough street cred to comment. Once I updated nuget and powershellget, Install-Module was available for me.

Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 -Force 
Install-PackageProvider -Name Powershellget -Force

What is interesting is that the version numbers returned by get-packageprovider didn't change after the update.

I had a similar problem. I am posting my solution here because I believe it might help one of the commenters.

For me, the obstacle was that the page required a login and then gave me a new URL through javascript. Here is what I had to do:

curl -c cookiejar -g -O -J -L -F "j_username=username" -F "j_password=password" <URL>

Note that j_username and j_password is the name of the fields for my website's login form. You will have to open the source of the webpage to see what the 'name' of the username field and the 'name' of the password field is in your case. After that I go an html file with java script in which the new URL was embedded. After parsing this out just resubmit with the new URL:

curl -c cookiejar -g -O -J -L -F "j_username=username" -F "j_password=password" <NEWURL>

Another way is to use the powers of /usr/bin/env:

docker run ubuntu env DEBUG=1 path/to/script.sh

You can use a named function on the constructor.

MyClass1 = function foo(id, member) {
    this.id = id;
    this.member = member;
}

var myobject = new MyClass1("5678999", "text");

console.log( myobject.constructor );

//function foo(id, member) {
//    this.id = id;
//    this.member = member;
//}

You could use a regex to parse out 'foo' from myobject.constructor and use that to get the name.

You can avoid blocking execution by writing the plot to an array, then displaying the array in a different thread. Here is an example of generating and displaying plots simultaneously using pf.screen from pyformulas 0.2.8:

import pyformulas as pf
import matplotlib.pyplot as plt
import numpy as np
import time

fig = plt.figure()

canvas = np.zeros((480,640))
screen = pf.screen(canvas, 'Sinusoid')

start = time.time()
while True:
    now = time.time() - start

    x = np.linspace(now-2, now, 100)
    y = np.sin(2*np.pi*x) + np.sin(3*np.pi*x)
    plt.xlim(now-2,now+1)
    plt.ylim(-3,3)
    plt.plot(x, y, c='black')

    # If we haven't already shown or saved the plot, then we need to draw the figure first...
    fig.canvas.draw()

    image = np.fromstring(fig.canvas.tostring_rgb(), dtype=np.uint8, sep='')
    image = image.reshape(fig.canvas.get_width_height()[::-1] + (3,))

    screen.update(image)

#screen.close()

Result:

Disclaimer: I'm the maintainer for pyformulas.

Reference: Matplotlib: save plot to numpy array

For Swift 3.0

String(describing: <Class-Name>.self)

For Swift 2.0 - 2.3

String(<Class-Name>)

itertools.groupby almost does what you want, except it requires the items to be sorted to ensure that you get a single contiguous range, so you need to sort by your key first (otherwise you'll get multiple interleaved groups for each type). eg.

def is_good(f):
    return f[2].lower() in IMAGE_TYPES

files = [ ('file1.jpg', 33L, '.jpg'), ('file2.avi', 999L, '.avi'), ('file3.gif', 123L, '.gif')]

for key, group in itertools.groupby(sorted(files, key=is_good), key=is_good):
    print key, list(group)

gives:

False [('file2.avi', 999L, '.avi')]
True [('file1.jpg', 33L, '.jpg'), ('file3.gif', 123L, '.gif')]

Similar to the other solutions, the key func can be defined to divide into any number of groups you want.

If you are using moment then you can use their "official plugin" for ranges moment-range and then this becomes trivial.

moment-range node example:

const Moment = require('moment');
const MomentRange = require('moment-range');
const moment = MomentRange.extendMoment(Moment);

const start = new Date("11/30/2018"), end = new Date("09/30/2019")
const range = moment.range(moment(start), moment(end));

console.log(Array.from(range.by('day')))

moment-range browser example:

window['moment-range'].extendMoment(moment);_x000D_
_x000D_
const start = new Date("11/30/2018"), end = new Date("09/30/2019")_x000D_
const range = moment.range(moment(start), moment(end));_x000D_
_x000D_
console.log(Array.from(range.by('day')))

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment-range/4.0.1/moment-range.js"></script>

date fns example:

If you are using date-fns then eachDay is your friend and you get by far the shortest and most concise answer:

console.log(dateFns.eachDay(_x000D_
  new Date(2018, 11, 30),_x000D_
  new Date(2019, 30, 09)_x000D_
))

<script src="https://cdnjs.cloudflare.com/ajax/libs/date-fns/1.29.0/date_fns.min.js"></script>

Extending on Tadeck's Django answer above, the use of 'class Meta:' in Django is just normal Python too.

The internal class is a convenient namespace for shared data among the class instances (hence the name Meta for 'metadata' but you can call it anything you like). While in Django it's generally read-only configuration stuff, there is nothing to stop you changing it:

In [1]: class Foo(object):
   ...:     class Meta:
   ...:         metaVal = 1
   ...:         
In [2]: f1 = Foo()
In [3]: f2 = Foo()
In [4]: f1.Meta.metaVal
Out[4]: 1
In [5]: f2.Meta.metaVal = 2
In [6]: f1.Meta.metaVal
Out[6]: 2
In [7]: Foo.Meta.metaVal
Out[7]: 2

You can explore it in Django directly too e.g:

In [1]: from django.contrib.auth.models import User
In [2]: User.Meta
Out[2]: django.contrib.auth.models.Meta
In [3]: User.Meta.__dict__
Out[3]: 
{'__doc__': None,
 '__module__': 'django.contrib.auth.models',
 'abstract': False,
 'verbose_name': <django.utils.functional.__proxy__ at 0x26a6610>,
 'verbose_name_plural': <django.utils.functional.__proxy__ at 0x26a6650>}

However, in Django you are more likely to want to explore the _meta attribute which is an Options object created by the model metaclass when a model is created. That is where you'll find all of the Django class 'meta' information. In Django, Meta is just used to pass information into the process of creating the _meta Options object.

if you just want to close form1 from form2 without closing form2 as well in the process, as the title suggests, then you could pass a reference to form 1 along to form 2 when you create it and use that to close form 1

for example you could add a

public class Form2 : Form
{
    Form2(Form1 parentForm):base()
    {
        this.parentForm = parentForm;
    }

    Form1 parentForm;
    .....
}

field and constructor to Form2

if you want to first close form2 and then form1 as the text of the question suggests, I'd go with Justins answer of returning an appropriate result to form1 on upon closing form2

The answer that works on Ubuntu18, python3, opencv 3.2.0 is similar to the one above. But with the change in line cv2.waitKey(0). that means the program waits until a button is pressed.

With this code I found the key value for the arrow buttons: arrow up (82), down (84), arrow left(81) and Enter(10) and etc..

import cv2
img = cv2.imread('sof.jpg') # load a dummy image
while(1):
    cv2.imshow('img',img)
    k = cv2.waitKey(0)
    if k==27:    # Esc key to stop
        break
    elif k==-1:  # normally -1 returned,so don't print it
        continue
    else:
        print k # else print its value

if ID is available - You can use getElementById()

var element =  document.getElementById('elementId');
  if (typeof(element) != 'undefined' && element != null)
  { 
     // exists.
  }

OR Try with Jquery -

if ($(document).find(yourElement).length == 0) 
{ 
 // -- Not Exist
}

Abstract classes are not required to implement the methods. So even though it implements an interface, the abstract methods of the interface can remain abstract. If you try to implement an interface in a concrete class (i.e. not abstract) and you do not implement the abstract methods the compiler will tell you: Either implement the abstract methods or declare the class as abstract.

The URLs are passed in the request: request.getRequestURL().

If you mean other sites that are linking to you? You want to capture the HTTP Referrer, which you can do by calling:

request.getHeader("referer");

You need some JS to achieve this by simply adding alert('Your message') within your PHP code.

See example below

     <?php 

//my other php code here
        
        function function_alert() { 
              
            // Display the alert box; note the Js tags within echo, it performs the magic
            echo "<script>alert('Your message Here');</script>"; 
        } 
        
        ?> 

when you visit your browser using the route supposed to triger your function_alert, you will see the alert box with your message displayed on your screen.

Read more at https://www.geeksforgeeks.org/how-to-pop-an-alert-message-box-using-php/

you can use PATTERN:

<input class="form-control" minlength="1" pattern="[0-9]*" [(ngModel)]="value" #name="ngModel">

<div *ngIf="name.invalid && (name.dirty || name.touched)" class="text-danger">
  <div *ngIf="name.errors?.pattern">Is not a number</div>
</div>

Piping to xargs is a dirty way of doing that which can be done inside of find.

find . -type d -exec chmod 0755 {} \;
find . -type f -exec chmod 0644 {} \;

You can be even more controlling with other options, such as:

find . -type d -user harry -exec chown daisy {} \;

You can do some very cool things with find and you can do some very dangerous things too. Have a look at "man find", it's long but is worth a quick read. And, as always remember:

• If you are root it will succeed.
• If you are in root (/) you are going to have a bad day.
• Using /path/to/directory can make things a lot safer as you are clearly defining where you want find to run.

<xsl:call-template> is a close equivalent to calling a function in a traditional programming language.

You can define functions in XSLT, like this simple one that outputs a string.

<xsl:template name="dosomething">
  <xsl:text>A function that does something</xsl:text>
</xsl:template>

This function can be called via <xsl:call-template name="dosomething">.

<xsl:apply-templates> is a little different and in it is the real power of XSLT: It takes any number of XML nodes (whatever you define in the select attribute), iterates them (this is important: apply-templates works like a loop!) and finds matching templates for them:

<!-- sample XML snippet -->
<xml>
  <foo /><bar /><baz />
</xml>

<!-- sample XSLT snippet -->
<xsl:template match="xml">
  <xsl:apply-templates select="*" /> <!-- three nodes selected here -->
</xsl:template>

<xsl:template match="foo"> <!-- will be called once -->
  <xsl:text>foo element encountered</xsl:text>
</xsl:template>

<xsl:template match="*"> <!-- will be called twice -->
  <xsl:text>other element countered</xsl:text>
</xsl:template>

This way you give up a little control to the XSLT processor - not you decide where the program flow goes, but the processor does by finding the most appropriate match for the node it's currently processing.

If multiple templates can match a node, the one with the more specific match expression wins. If more than one matching template with the same specificity exist, the one declared last wins.

You can concentrate more on developing templates and need less time to do "plumbing". Your programs will become more powerful and modularized, less deeply nested and faster (as XSLT processors are optimized for template matching).

A concept to understand with XSLT is that of the "current node". With <xsl:apply-templates> the current node moves on with every iteration, whereas <xsl:call-template> does not change the current node. I.e. the . within a called template refers to the same node as the . in the calling template. This is not the case with apply-templates.

This is the basic difference. There are some other aspects of templates that affect their behavior: Their mode and priority, the fact that templates can have both a name and a match. It also has an impact whether the template has been imported (<xsl:import>) or not. These are advanced uses and you can deal with them when you get there.

For anyone that this might be handy for, here is a jQuery dependent function I had success with for applying a CSS animation via a CSS class, then getting a callback from afterwards. It may not work perfectly since I had it being used in a Backbone.js App, but maybe useful.

var cssAnimate = function(cssClass, callback) {
    var self = this;

    // Checks if correct animation has ended
    var setAnimationListener = function() {
        self.one(
            "webkitAnimationEnd oanimationend msAnimationEnd animationend",
            function(e) {
                if(
                    e.originalEvent.animationName == cssClass &&
                    e.target === e.currentTarget
                ) {
                    callback();
                } else {
                    setAnimationListener();
                }
            }
        );
    }

    self.addClass(cssClass);
    setAnimationListener();
}

I used it kinda like this

cssAnimate.call($("#something"), "fadeIn", function() {
    console.log("Animation is complete");
    // Remove animation class name?
});

Original idea from http://mikefowler.me/2013/11/18/page-transitions-in-backbone/

And this seems handy: http://api.jqueryui.com/addClass/

Update

After struggling with the above code and other options, I would suggest being very cautious with any listening for CSS animation ends. With multiple animations going on, this can get messy very fast for event listening. I would strongly suggest an animation library like GSAP for every animation, even the small ones.

If you do find yourslef needing a Comparator, and you already use Guava, you can use Ordering.natural().

clearfix should contain the floating elements but in your html you have added clearfix only after floating right that is your pull-right so you should do like this:

<div class="clearfix">
  <div id="sidebar">
    <ul>
      <li>A</li>
      <li>A</li>
      <li>C</li>
      <li>D</li>
      <li>E</li>
      <li>F</li>
      <li>...</li>
      <li>Z</li>
    </ul>
  </div>
  <div id="main">
    <div>
      <div class="pull-right">
        <a>RIGHT</a>
      </div>
    </div>
  <div>MOVED BELOW Z</div>
</div>

see this demo

Happy to know you solved the problem by setting overflow properties. However this is also good idea to clear the float. Where you have floated your elements you could add overflow: hidden; as you have done in your main.

I faced this issue too. I was using jquery.poptrox.min.js for image popping and zooming and I received an error which said:

“Uncaught TypeError: a.indexOf is not a function” error.

This is because indexOf was not supported in 3.3.1/jquery.min.js so a simple fix to this is to change it to an old version 2.1.0/jquery.min.js.

This fixed it for me.

You can also get this problem if you have your Android SDK version controlled. You get a slightly different error:

Unable to find a 'userdata.img' file for ABI .svn to copy into the AVD folder.

For some reason, the Android Virtual Device (AVD) manager believes the .svn folder is specifying an application binary interface (ABI). It looks for userdata.img within the .svn folder and can't find it, so it fails.

I used the shell extension found in the responses for the Stack Overflow question Removing .svn files from all directories to remove all .svn folders recursively from the android-sdk folder. After this, the AVD manager was able to create an AVD successfully. I have yet to figure out how to get the SDK to play nicely with Subversion.

In your script, data is your whole object.

key is "messages", which is an array you need to iterate through like this:

    for (var key in data) {
       var arr = data[key];
       for( var i = 0; i < arr.length; i++ ) {
           var obj = arr[ i ];
           for (var prop in obj) {
               if(obj.hasOwnProperty(prop)){
                   console.log(prop + " = " + obj[prop]);
               }
           }
       }
    }

Try:

"0x%x" % 255 # => 0xff

or

"0x%X" % 255 # => 0xFF

Python Documentation says: "keep this under Your pillow: http://docs.python.org/library/index.html"

How about something like this?

user_input = raw_input("Enter three numbers separated by commas: ")

input_list = user_input.split(',')
numbers = [float(x.strip()) for x in input_list]

(You would probably want some error handling too)

No one has explicitly mentioned that weightSum is a particular XML attribute for LinearLayout.

I believe this would be helpful to anyone who was confused at first as I was, looking for weightSum in the ConstraintLayout documentation.

If you want to get unix timestamp, then you need to use:

timestamp=$(date +%s)

%T will give you just the time; same as %H:%M:%S (via http://www.cyberciti.biz/faq/linux-unix-formatting-dates-for-display/)

You can also use viewport-percentage lengths to achieve this:

5.1.2. Viewport-percentage lengths: the ‘vw’, ‘vh’, ‘vmin’, ‘vmax’ units

The viewport-percentage lengths are relative to the size of the initial containing block. When the height or width of the initial containing block is changed, they are scaled accordingly.

Where 100vh represents the height of the viewport, and likewise 100vw represents the width.

Example Here

body {_x000D_
    margin: 0;            /* Reset default margin */_x000D_
}_x000D_
iframe {_x000D_
    display: block;       /* iframes are inline by default */_x000D_
    background: #000;_x000D_
    border: none;         /* Reset default border */_x000D_
    height: 100vh;        /* Viewport-relative units */_x000D_
    width: 100vw;_x000D_
}

<iframe></iframe>

This is supported in most modern browsers - support can be found here.

Looking at this official google link: Youtube Live encoder settings, bitrates and resolutions they have this table:

                   240p       360p        480p        720p        1080p
Resolution      426 x 240   640 x 360   854x480     1280x720    1920x1080
Video Bitrates                   
Maximum         700 Kbps    1000 Kbps   2000 Kbps   4000 Kbps   6000 Kbps
Recommended     400 Kbps    750 Kbps    1000 Kbps   2500 Kbps   4500 Kbps
Minimum         300 Kbps    400 Kbps    500 Kbps    1500 Kbps   3000 Kbps

It would appear as though this is the case, although the numbers dont sync up to the google table above:

// the bitrates, video width and file names for this clip
      bitrates: [
        { url: "bbb-800.mp4", width: 480, bitrate: 800 }, //360p video
        { url: "bbb-1200.mp4", width: 720, bitrate: 1200 }, //480p video
        { url: "bbb-1600.mp4", width: 1080, bitrate: 1600 } //720p video
      ],

None of the response works for me targeting a phonegapp App.

As the following link points, the solution below works.

@media screen and (device-height: 568px) and (orientation: portrait) and (-webkit-min-device-pixel-ratio: 2) {
    // css here
}

TextView textv = (TextView) findViewById(R.id.textview1);
textv.setShadowLayer(1, 0, 0, Color.BLACK);