How to get parameter value for date/time column from empty MaskedTextBox

You're storing the .Text properties of the textboxes directly into the database, this doesn't work. The .Text properties are Strings (i.e. simple text) and not typed as DateTime instances. Do the conversion first, then it will work.

Do this for each date parameter:

Dim bookIssueDate As DateTime = DateTime.ParseExact( txtBookDateIssue.Text, "dd/MM/yyyy", CultureInfo.InvariantCulture ) cmd.Parameters.Add( New OleDbParameter("@Date_Issue", bookIssueDate ) )

Note that this code will crash/fail if a user enters an invalid date, e.g. "64/48/9999", I suggest using DateTime.TryParse or DateTime.TryParseExact, but implementing that is an exercise for the reader.

C# Inserting Data from a form into an access Database

Password is a reserved word. Bracket that field name to avoid confusing the db engine.

INSERT into Login (Username, [Password])

how to refresh my datagridview after I add new data

I think the problem is that you're adding a new entry to the database, but not the data structure that the datagrid represents. You're only querying the database for data in the load event, so if the database changes after that you're not going to know about it.

To solve the problem you need to either re-query the database after each insert, or add the item to tables(0) data structure in addition to the Access table after each insert.

Cannot implicitly convert type 'int?' to 'int'.

simple

(i == null) ? i.Value : 0;

C# refresh DataGridView when updating or inserted on another form

For datagridview in C#, use this code

con.Open();
MySqlDataAdapter MyDA = new MySqlDataAdapter();
string sqlSelectAll = "SELECT * from dailyprice";
MyDA.SelectCommand = new MySqlCommand(sqlSelectAll, con);

DataTable table = new DataTable();
MyDA.Fill(table);

BindingSource bSource = new BindingSource();
bSource.DataSource = table;


dataGridView1.DataSource = bSource;
con.Close();

It works for show new records in the datagridview.

Uploading an Excel sheet and importing the data into SQL Server database

Not sure why the file path is not working, I have some similar code that works fine. But if with two "\" it works, you can always do path = path.Replace(@"\", @"\\");

DataAdapter.Fill(Dataset)

leDbConnection connection = 
new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=Inventar.accdb");
DataSet1 DS = new DataSet1();
connection.Open();

OleDbDataAdapter DBAdapter = new OleDbDataAdapter(
@"SELECT tbl_Computer.*,  tbl_Besitzer.*
  FROM tbl_Computer 
  INNER JOIN tbl_Besitzer ON tbl_Computer.FK_Benutzer = tbl_Besitzer.ID 
  WHERE (((tbl_Besitzer.Vorname)='ma'));", 
connection);

Microsoft.ACE.OLEDB.12.0 provider is not registered

I have a visual Basic program with Visual Studio 2008 that uses an Access 2007 database and was receiving the same error. I found some threads that advised changing the advanced compile configuration to x86 found in the programs properties if you're running a 64 bit system. So far I haven't had any problems with my program since.

How to escape a JSON string to have it in a URL?

Answer given by Delan is perfect. Just adding to it - incase someone wants to name the parameters or pass multiple JSON strings separately - the below code could help!

JQuery

var valuesToPass = new Array(encodeURIComponent(VALUE_1), encodeURIComponent(VALUE_2), encodeURIComponent(VALUE_3), encodeURIComponent(VALUE_4));

data = {elements:JSON.stringify(valuesToPass)}

PHP

json_decode(urldecode($_POST('elements')));

Hope this helps!

Woocommerce, get current product id

If the query hasn't been modified by a plugin for some reason, you should be able to get a single product page's "id" via

global $post;
$id = $post->ID

global $product;
$id = $product->id;

EDIT: As of WooCommerce 3.0 this needs to be

global $product;
$id = $product->get_id();

Scroll Automatically to the Bottom of the Page

A picture is worth a thousand words:

The key is:

document.documentElement.scrollTo({
  left: 0,
  top: document.documentElement.scrollHeight - document.documentElement.clientHeight,
  behavior: 'smooth'
});

It is using document.documentElement, which is the <html> element. It is just like using window, but it is just my personal preference to do it this way, because if it is not the whole page but a container, it works just like this except you'd change document.body and document.documentElement to document.querySelector("#container-id").

Example:

_x000D_

let cLines = 0;_x000D_
_x000D_
let timerID = setInterval(function() {_x000D_
  let elSomeContent = document.createElement("div");_x000D_
_x000D_
  if (++cLines > 33) {_x000D_
    clearInterval(timerID);_x000D_
    elSomeContent.innerText = "That's all folks!";_x000D_
  } else {_x000D_
    elSomeContent.innerText = new Date().toLocaleDateString("en", {_x000D_
      dateStyle: "long",_x000D_
      timeStyle: "medium"_x000D_
    });_x000D_
  }_x000D_
  document.body.appendChild(elSomeContent);_x000D_
_x000D_
  document.documentElement.scrollTo({_x000D_
    left: 0,_x000D_
    top: document.documentElement.scrollHeight - document.documentElement.clientHeight,_x000D_
    behavior: 'smooth'_x000D_
  });_x000D_
_x000D_
}, 1000);

_x000D_

body {_x000D_
  font: 27px Arial, sans-serif;_x000D_
  background: #ffc;_x000D_
  color: #333;_x000D_
}

_x000D_

You can compare the difference if there is no scrollTo():

_x000D_

let cLines = 0;_x000D_
_x000D_
let timerID = setInterval(function() {_x000D_
  let elSomeContent = document.createElement("div");_x000D_
_x000D_
  if (++cLines > 33) {_x000D_
    clearInterval(timerID);_x000D_
    elSomeContent.innerText = "That's all folks!";_x000D_
  } else {_x000D_
    elSomeContent.innerText = new Date().toLocaleDateString("en", {_x000D_
      dateStyle: "long",_x000D_
      timeStyle: "medium"_x000D_
    });_x000D_
  }_x000D_
  document.body.appendChild(elSomeContent);_x000D_
_x000D_
}, 1000);

_x000D_

body {_x000D_
  font: 27px Arial, sans-serif;_x000D_
  background: #ffc;_x000D_
  color: #333;_x000D_
}

_x000D_

upgade python version using pip

pip is designed to upgrade python packages and not to upgrade python itself. pip shouldn't try to upgrade python when you ask it to do so.

Don't type pip install python but use an installer instead.

My C# application is returning 0xE0434352 to Windows Task Scheduler but it is not crashing

I was referencing a mapped drive and I found that the mapped drives are not always available to the user account that is running the scheduled task so I used \\IPADDRESS instead of MAPDRIVELETTER: and I am up and running.

Get only the Date part of DateTime in mssql

The solution you want is the one proposed here:

https://stackoverflow.com/a/542802/50776

Basically, you do this:

cast(floor(cast(@dateVariable as float)) as datetime)

There is a function definition in the link which will allow you to consolidate the functionality and call it anywhere (instead of having to remember it) if you wish.

What regex will match every character except comma ',' or semi-colon ';'?

[^,;]+

You haven't specified the regex implementation you are using. Most of them have a Split method that takes delimiters and split by them. You might want to use that one with a "normal" (without ^) character class:

[,;]+

How do I configure the proxy settings so that Eclipse can download new plugins?

I had the same problem. I installed Eclipse 3.7 into a new folder, and created a new workspace. I launch Eclipse with a -data argument to reference the new workspace.

When I attempt to connect to the marketplace to get the SVN and Maven plugins, I get the same issues described in OP.

After a few more tries, I cleared the proxy settings for SOCKS protocol, and I was able to connect to the marketplace.

So the solution for me was to configure the manual settings for HTTP and HTTPS proxy, clear the settings for SOCKS, and restart Eclipse.

Ignoring NaNs with str.contains

In addition to the above answers, I would say for columns having no single word name, you may use:-

df[df['Product ID'].str.contains("foo") == True]

Hope this helps.

How to get Rails.logger printing to the console/stdout when running rspec?

For Rails 4.x the log level is configured a bit different than in Rails 3.x

Add this to config/environment/test.rb

# Enable stdout logger
config.logger = Logger.new(STDOUT)

# Set log level
config.log_level = :ERROR

The logger level is set on the logger instance from config.log_level at: https://github.com/rails/rails/blob/v4.2.4/railties/lib/rails/application/bootstrap.rb#L70

Environment variable

As a bonus, you can allow overwriting the log level using an environment variable with a default value like so:

# default :ERROR
config.log_level = ENV.fetch("LOG_LEVEL", "ERROR")

And then running tests from shell:

# Log level :INFO (the value is uppercased in bootstrap.rb)
$ LOG_LEVEL=info rake test

# Log level :ERROR
$ rake test

javascript code to check special characters

If you don't want to include any special character, then try this much simple way for checking special characters using RegExp \W Metacharacter.

var iChars = "~`!#$%^&*+=-[]\\\';,/{}|\":<>?";
if(!(iChars.match(/\W/g)) == "") {
    alert ("File name has special characters ~`!#$%^&*+=-[]\\\';,/{}|\":<>? \nThese are not allowed\n");
    return false;
}

How can I add a .npmrc file?

In MacOS Catalina 10.15.5 the .npmrc file path can be found at

/Users/<user-name>/.npmrc

Open in it in (for first time users, create a new file) any editor and copy-paste your token. Save it.

You are ready to go.

Note: As mentioned by @oligofren, the command npm config ls -l will npm configurations. You will get the .npmrc file from config parameter userconfig

How to insert text into the textarea at the current cursor position?

Rab's answer works great, but not for Microsoft Edge, so I added a small adaptation for Edge as well:

https://jsfiddle.net/et9borp4/

function insertAtCursor(myField, myValue) {
    //IE support
    if (document.selection) {
        myField.focus();
        sel = document.selection.createRange();
        sel.text = myValue;
    }
    // Microsoft Edge
    else if(window.navigator.userAgent.indexOf("Edge") > -1) {
      var startPos = myField.selectionStart; 
      var endPos = myField.selectionEnd; 

      myField.value = myField.value.substring(0, startPos)+ myValue 
             + myField.value.substring(endPos, myField.value.length); 

      var pos = startPos + myValue.length;
      myField.focus();
      myField.setSelectionRange(pos, pos);
    }
    //MOZILLA and others
    else if (myField.selectionStart || myField.selectionStart == '0') {
        var startPos = myField.selectionStart;
        var endPos = myField.selectionEnd;
        myField.value = myField.value.substring(0, startPos)
            + myValue
            + myField.value.substring(endPos, myField.value.length);
    } else {
        myField.value += myValue;
    }
}

Checking if a field contains a string

How to ignore HTML tags in a RegExp match:

var text = '<p>The <b>tiger</b> (<i>Panthera tigris</i>) is the largest <a href="/wiki/Felidae" title="Felidae">cat</a> <a href="/wiki/Species" title="Species">species</a>, most recognizable for its pattern of dark vertical stripes on reddish-orange fur with a lighter underside. The species is classified in the genus <i><a href="/wiki/Panthera" title="Panthera">Panthera</a></i> with the <a href="/wiki/Lion" title="Lion">lion</a>, <a href="/wiki/Leopard" title="Leopard">leopard</a>, <a href="/wiki/Jaguar" title="Jaguar">jaguar</a>, and <a href="/wiki/Snow_leopard" title="Snow leopard">snow leopard</a>. It is an <a href="/wiki/Apex_predator" title="Apex predator">apex predator</a>, primarily preying on <a href="/wiki/Ungulate" title="Ungulate">ungulates</a> such as <a href="/wiki/Deer" title="Deer">deer</a> and <a href="/wiki/Bovid" class="mw-redirect" title="Bovid">bovids</a>.</p>';
var searchString = 'largest cat species';

var rx = '';
searchString.split(' ').forEach(e => {
  rx += '('+e+')((?:\\s*(?:<\/?\\w[^<>]*>)?\\s*)*)';
});

rx = new RegExp(rx, 'igm');

console.log(text.match(rx));

This is probably very easy to turn into a MongoDB aggregation filter.

What does void mean in C, C++, and C#?

Void is used only in method signatures. For return types it means method will not return anything to the calling code. For parameters it means, no parameters are passed to the method

e.g.

void MethodThatReturnsAndTakesVoid(void)
{
// Method body
}

In C# we can omit the void for parameters and can write the above code as:

void MethodThatReturnsAndTakesVoid()
{
// Method body
}

Void should not be confused with null. Null means for the variable whose address is on stack, the value on the heap for that address is empty.

How can I pad a value with leading zeros?

was here looking for a standard. had the same idea as Paul and Jonathan... theirs are super cute, here's a horrible-cute version:

function zeroPad(n,l,i){
    return (i=n/Math.pow(10,l))*i>1?''+n:i.toFixed(l).replace('0.','');
}

works too (we're assuming integers, yes?)...

> zeroPad(Math.pow(2, 53), 20);
'00009007199254740992'
> zeroPad(-Math.pow(2, 53), 20);
'-00009007199254740992'
> zeroPad(Math.pow(2, 53), 10);
'9007199254740992'
> zeroPad(-Math.pow(2, 53), 10);
'-9007199254740992'

Debugging Stored Procedure in SQL Server 2008

MSDN has provided easy way to debug the stored procedure. Please check this link-
How to: Debug Stored Procedures

How do I add a placeholder on a CharField in Django?

Most of the time I just wish to have all placeholders equal to the verbose name of the field defined in my models

I've added a mixin to easily do this to any form that I create,

class ProductForm(PlaceholderMixin, ModelForm):
    class Meta:
        model = Product
        fields = ('name', 'description', 'location', 'store')

And

class PlaceholderMixin:
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        field_names = [field_name for field_name, _ in self.fields.items()]
        for field_name in field_names:
            field = self.fields.get(field_name)
            field.widget.attrs.update({'placeholder': field.label})

"RangeError: Maximum call stack size exceeded" Why?

Browsers can't handle that many arguments. See this snippet for example:

alert.apply(window, new Array(1000000000));

This yields RangeError: Maximum call stack size exceeded which is the same as in your problem.

To solve that, do:

var arr = [];
for(var i = 0; i < 1000000; i++){
    arr.push(Math.random());
}

Regular Expression usage with ls

You are confusing regular expression with shell globbing. If you want to use regular expression to match file names you could do:

$ ls | egrep '.+\..+'

Cast received object to a List<object> or IEnumerable<object>

You need to type cast using as operator like this.

private void MyMethod(object myObject)  
{  
if(myObject is IEnumerable)  
{
    List<object> collection = myObject as(List<object>); 
    ... do something   
}  
else  
{  
    ... do something  
}  
}

git - Your branch is ahead of 'origin/master' by 1 commit

git reset HEAD <file1> <file2> ...

remove the specified files from the next commit

What is the <leader> in a .vimrc file?

Be aware that when you do press your <leader> key you have only 1000ms (by default) to enter the command following it.

This is exacerbated because there is no visual feedback (by default) that you have pressed your <leader> key and vim is awaiting the command; and so there is also no visual way to know when this time out has happened.

If you add set showcmd to your vimrc then you will see your <leader> key appear in the bottom right hand corner of vim (to the left of the cursor location) and perhaps more importantly you will see it disappear when the time out happens.

The length of the timeout can also be set in your vimrc, see :help timeoutlen for more information.

Real life example, when to use OUTER / CROSS APPLY in SQL

Connecting to smtp.gmail.com via command line

For OSX' terminal:

openssl s_client -connect smtp.gmail.com:25 -starttls smtp

how to convert integer to string?

NSArray *myArray = [NSArray arrayWithObjects:[NSNumber numberWithInt:1], [NSNumber numberWithInt:2], [NSNumber numberWithInt:3]];

Update for new Objective-C syntax:

NSArray *myArray = @[@1, @2, @3];

Those two declarations are identical from the compiler's perspective.

if you're just wanting to use an integer in a string for putting into a textbox or something:

int myInteger = 5;
NSString* myNewString = [NSString stringWithFormat:@"%i", myInteger];

Javascript - How to show escape characters in a string?

If your goal is to have

str = "Hello\nWorld";

and output what it contains in string literal form, you can use JSON.stringify:

console.log(JSON.stringify(str)); // ""Hello\nWorld""

_x000D_

const str = "Hello\nWorld";_x000D_
const json = JSON.stringify(str);_x000D_
console.log(json); // ""Hello\nWorld""_x000D_
for (let i = 0; i < json.length; ++i) {_x000D_
    console.log(`${i}: ${json.charAt(i)}`);_x000D_
}

_x000D_

.as-console-wrapper {_x000D_
    max-height: 100% !important;_x000D_
}

_x000D_

console.log adds the outer quotes (at least in Chrome's implementation), but the content within them is a string literal (yes, that's somewhat confusing).

JSON.stringify takes what you give it (in this case, a string) and returns a string containing valid JSON for that value. So for the above, it returns an opening quote ("), the word Hello, a backslash (\), the letter n, the word World, and the closing quote ("). The linefeed in the string is escaped in the output as a \ and an n because that's how you encode a linefeed in JSON. Other escape sequences are similarly encoded.

Linking to a specific part of a web page

The upcoming Chrome "Scroll to text" feature is exactly what you are looking for....

https://github.com/bokand/ScrollToTextFragment

You basically add #targetText= at the end of the URL and the browser will scroll to the target text and highlight it after the page is loaded.

It is in the version of Chrome that is running on my desk, but currently it must be manually enabled. Presumably it will soon be enabled by default in the production Chrome builds and other browsers will follow, so OK to start adding to your links now and it will start working then.

Where to download Microsoft Visual c++ 2003 redistributable

I think this is what you're looking for: Microsoft Visual C++ 2008 Redistributable Package (x86)

HTML form action and onsubmit issues

You should stop the submit procedure by returning false on the onsubmit callback.

<script>
    function checkRegistration(){
        if(!form_valid){
            alert('Given data is not correct');
            return false;
        }
        return true;
    }
</script>

<form onsubmit="return checkRegistration()"...

Here you have a fully working example. The form will submit only when you write google into input, otherwise it will return an error:

<script>
    function checkRegistration(){
        var form_valid = (document.getElementById('some_input').value == 'google');
        if(!form_valid){
            alert('Given data is incorrect');
            return false;
        }
        return true;
    }
</script>

<form onsubmit="return checkRegistration()" method="get" action="http://google.com">
    Write google to go to google...<br/>
    <input type="text" id="some_input" value=""/>
    <input type="submit" value="google it"/>
</form>

How to use *ngIf else?

There are two possibilities to use if condition on HTML tag or templates:

*ngIf directive from CommonModule, on HTML tag;
if-else

FIFO based Queue implementations?

Here is example code for usage of java's built-in FIFO queue:

public static void main(String[] args) {
    Queue<Integer> myQ = new LinkedList<Integer>();
    myQ.add(1);
    myQ.add(6);
    myQ.add(3);
    System.out.println(myQ);   // 1 6 3
    int first = myQ.poll();    // retrieve and remove the first element
    System.out.println(first); // 1
    System.out.println(myQ);   // 6 3
}

Build android release apk on Phonegap 3.x CLI

This is for Phonegap 3.0.x to 3.3.x. For PhoneGap 3.4.0 and higher see below.

Found part of the answer here, at Phonegap documentation. The full process is the following:

Open a command line window, and go to /path/to/your/project/platforms/android/cordova.
Run build --release. This creates an unsigned release APK at /path/to/your/project/platforms/android/bin folder, called YourAppName-release-unsigned.apk.
Sign and align the APK using the instructions at android developer official docs.

Thanks to @LaurieClark for the link (http://iphonedevlog.wordpress.com/2013/08/16/using-phonegap-3-0-cli-on-mac-osx-10-to-build-ios-and-android-projects/), and the blogger who post it, because it put me on the track.

How to secure RESTful web services?

HTTP Basic + HTTPS is one common method.

In Chart.js set chart title, name of x axis and y axis?

just use this:

<script>
  var ctx = document.getElementById("myChart").getContext('2d');
  var myChart = new Chart(ctx, {
    type: 'bar',
    data: {
      labels: ["1","2","3","4","5","6","7","8","9","10","11",],
      datasets: [{
        label: 'YOUR LABEL',
        backgroundColor: [
          "#566573",
          "#99a3a4",
          "#dc7633",
          "#f5b041",
          "#f7dc6f",
          "#82e0aa",
          "#73c6b6",
          "#5dade2",
          "#a569bd",
          "#ec7063",
          "#a5754a"
        ],
        data: [12, 19, 3, 17, 28, 24, 7, 2,4,14,6],            
      },]
    },
    //HERE COMES THE AXIS Y LABEL
    options : {
      scales: {
        yAxes: [{
          scaleLabel: {
            display: true,
            labelString: 'probability'
          }
        }]
      }
    }
  });
</script>

What XML parser should I use in C++?

Can we install Android OS on any Windows Phone and vice versa, and same with iPhone and vice versa?

Ok, For installing Android on Windows phone, I think you can..(But your window phone has required configuration to run Android) (For other I don't know If I will then surely post here)

Just go through these links,

Run Android on Your Windows Mobile Phone

full tutorial on how to put android on windows mobile touch pro 2

How to install Android on most Windows Mobile phones

Update:

For Windows 7 to Android device, this also possible, (You need to do some hack for this)

Just go through these links,

Install Windows Phone 7 Mango on HTC HD2 [How-To Guide]

HTC HD2: How To Install WP7 (Windows Phone 7) & MAGLDR 1.13 To NAND

Install windows phone 7 on android and iphones | Tips and Tricks

How to install Windows Phone 7 on HTC HD2? (Video)

To Install Android on your iOS Devices (This also possible...)

Look at How To Install Android on your iOS Devices

Android 2.2 Froyo running on Iphone

Eclipse: Enable autocomplete / content assist

window->preferences->java->Editor->Contest Assist
Enter in Auto activation triggers for java:
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ._
Apply and Close

other method:
type initial letter then ctrl+spacebar for auto-complete options.

What's the difference between ng-model and ng-bind

ngModel usually use for input tags for bind a variable that we can change variable from controller and html page but ngBind use for display a variable in html page and we can change variable just from controller and html just show variable.

How to do the equivalent of pass by reference for primitives in Java

public static void main(String[] args) {
    int[] toyNumber = new int[] {5};
    NewClass temp = new NewClass();
    temp.play(toyNumber);
    System.out.println("Toy number in main " + toyNumber[0]);
}

void play(int[] toyNumber){
    System.out.println("Toy number in play " + toyNumber[0]);
    toyNumber[0]++;
    System.out.println("Toy number in play after increement " + toyNumber[0]);
}

How to repair COMException error 80040154?

WORKAROUND:

The possible workaround is modify your project's platform from 'Any CPU' to 'X86' (in Project's Properties, Build/Platform's Target)

ROOTCAUSE

The VSS Interop is a managed assembly using 32-bit Framework and the dll contains a 32-bit COM object. If you run this COM dll in 64 bit environment, you will get the error message.

Is calling destructor manually always a sign of bad design?

Any time you need to separate allocation from initialization, you'll need placement new and explicit calling of the destructor manually. Today, it's rarely necessary, since we have the standard containers, but if you have to implement some new sort of container, you'll need it.

Send string to stdin

You can use one-line heredoc

cat <<< "This is coming from the stdin"

the above is the same as

cat <<EOF
This is coming from the stdin
EOF

or you can redirect output from a command, like

diff <(ls /bin) <(ls /usr/bin)

or you can read as

while read line
do
   echo =$line=
done < some_file

or simply

echo something | read param

ruby LoadError: cannot load such file

The directory where st.rb lives is most likely not on your load path.

Assuming that st.rb is located in a directory called lib relative to where you invoke irb, you can add that lib directory to the list of directories that ruby uses to load classes or modules with this:

$: << 'lib'

For example, in order to call the module called 'foobar' (foobar.rb) that lives in the lib directory, I would need to first add the lib directory to the list of load path. Here, I am just appending the lib directory to my load path:

irb(main):001:0> require 'foobar'
LoadError: no such file to load -- foobar
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
        from (irb):1
irb(main):002:0> $:
=> ["/usr/lib/ruby/gems/1.8/gems/spoon-0.0.1/lib", "/usr/lib/ruby/gems/1.8/gems/interactive_editor-0.0.10/lib", "/usr/lib/ruby/site_ruby/1.8", "/usr/lib/ruby/site_ruby/1.8/i386-cygwin", "/usr/lib/ruby/site_ruby", "/usr/lib/ruby/vendor_ruby/1.8", "/usr/lib/ruby/vendor_ruby/1.8/i386-cygwin", "/usr/lib/ruby/vendor_ruby", "/usr/lib/ruby/1.8", "/usr/lib/ruby/1.8/i386-cygwin", "."]
irb(main):004:0> $: << 'lib'
=> ["/usr/lib/ruby/gems/1.8/gems/spoon-0.0.1/lib", "/usr/lib/ruby/gems/1.8/gems/interactive_editor-0.0.10/lib", "/usr/lib/ruby/site_ruby/1.8", "/usr/lib/ruby/site_ruby/1.8/i386-cygwin", "/usr/lib/ruby/site_ruby", "/usr/lib/ruby/vendor_ruby/1.8", "/usr/lib/ruby/vendor_ruby/1.8/i386-cygwin", "/usr/lib/ruby/vendor_ruby", "/usr/lib/ruby/1.8", "/usr/lib/ruby/1.8/i386-cygwin", ".", "lib"]
irb(main):005:0> require 'foobar'
=> true

EDIT Sorry, I completely missed the fact that you are using ruby 1.9.x. All accounts report that your current working directory has been removed from LOAD_PATH for security reasons, so you will have to do something like in irb:

$: << "."

Case insensitive access for generic dictionary

For you LINQers out there that never use a regular dictionary constructor

myCollection.ToDictionary(x => x.PartNumber, x => x.PartDescription, StringComparer.OrdinalIgnoreCase)

What is the meaning of git reset --hard origin/master?

In newer version of git (2.23+) you can use:

git switch -C master origin/master

-C is same as --force-create. Related Reference Docs

Comparing two vectors in an if statement

all is one option:

> A <- c("A", "B", "C", "D")
> B <- A
> C <- c("A", "C", "C", "E")

> all(A==B)
[1] TRUE
> all(A==C)
[1] FALSE

But you may have to watch out for recycling:

> D <- c("A","B","A","B")
> E <- c("A","B")
> all(D==E)
[1] TRUE
> all(length(D)==length(E)) && all(D==E)
[1] FALSE

The documentation for length says it currently only outputs an integer of length 1, but that it may change in the future, so that's why I wrapped the length test in all.

How to set HttpResponse timeout for Android in Java

If you're using the default http client, here's how to do it using the default http params:

HttpClient client = new DefaultHttpClient();
HttpParams params = client.getParams();
HttpConnectionParams.setConnectionTimeout(params, 3000);
HttpConnectionParams.setSoTimeout(params, 3000);

Original credit goes to http://www.jayway.com/2009/03/17/configuring-timeout-with-apache-httpclient-40/

.gitignore for Visual Studio Projects and Solutions

On Visual Studio 2015 Update 3, and with Git extension updated as of today (2016-10-24), the .gitignore generated by Visual Studio is:

## Ignore Visual Studio temporary files, build results, and
## files generated by popular Visual Studio add-ons.

# User-specific files
*.suo
*.user
*.userosscache
*.sln.docstates

# User-specific files (MonoDevelop/Xamarin Studio)
*.userprefs

# Build results
[Dd]ebug/
[Dd]ebugPublic/
[Rr]elease/
[Rr]eleases/
[Xx]64/
[Xx]86/
[Bb]uild/
bld/
[Bb]in/
[Oo]bj/

# Visual Studio 2015 cache/options directory
.vs/
# Uncomment if you have tasks that create the project's static files in wwwroot
#wwwroot/

# MSTest test Results
[Tt]est[Rr]esult*/
[Bb]uild[Ll]og.*

# NUNIT
*.VisualState.xml
TestResult.xml

# Build Results of an ATL Project
[Dd]ebugPS/
[Rr]eleasePS/
dlldata.c

# DNX
project.lock.json
artifacts/

*_i.c
*_p.c
*_i.h
*.ilk
*.meta
*.obj
*.pch
*.pdb
*.pgc
*.pgd
*.rsp
*.sbr
*.tlb
*.tli
*.tlh
*.tmp
*.tmp_proj
*.log
*.vspscc
*.vssscc
.builds
*.pidb
*.svclog
*.scc

# Chutzpah Test files
_Chutzpah*

# Visual C++ cache files
ipch/
*.aps
*.ncb
*.opendb
*.opensdf
*.sdf
*.cachefile
*.VC.db

# Visual Studio profiler
*.psess
*.vsp
*.vspx
*.sap

# TFS 2012 Local Workspace
$tf/

# Guidance Automation Toolkit
*.gpState

# ReSharper is a .NET coding add-in
_ReSharper*/
*.[Rr]e[Ss]harper
*.DotSettings.user

# JustCode is a .NET coding add-in
.JustCode

# TeamCity is a build add-in
_TeamCity*

# DotCover is a Code Coverage Tool
*.dotCover

# NCrunch
_NCrunch_*
.*crunch*.local.xml
nCrunchTemp_*

# MightyMoose
*.mm.*
AutoTest.Net/

# Web workbench (sass)
.sass-cache/

# Installshield output folder
[Ee]xpress/

# DocProject is a documentation generator add-in
DocProject/buildhelp/
DocProject/Help/*.HxT
DocProject/Help/*.HxC
DocProject/Help/*.hhc
DocProject/Help/*.hhk
DocProject/Help/*.hhp
DocProject/Help/Html2
DocProject/Help/html

# Click-Once directory
publish/

# Publish Web Output
*.[Pp]ublish.xml
*.azurePubxml

# TODO: Un-comment the next line if you do not want to checkin 
# your web deploy settings because they may include unencrypted
# passwords
#*.pubxml
*.publishproj

# NuGet Packages
*.nupkg
# The packages folder can be ignored because of Package Restore
**/packages/*
# except build/, which is used as an MSBuild target.
!**/packages/build/
# Uncomment if necessary however generally it will be regenerated when needed
#!**/packages/repositories.config
# NuGet v3's project.json files produces more ignoreable files
*.nuget.props
*.nuget.targets

# Microsoft Azure Build Output
csx/
*.build.csdef

# Microsoft Azure Emulator
ecf/
rcf/

# Microsoft Azure ApplicationInsights config file
ApplicationInsights.config

# Windows Store app package directory
AppPackages/
BundleArtifacts/

# Visual Studio cache files
# files ending in .cache can be ignored
*.[Cc]ache
# but keep track of directories ending in .cache
!*.[Cc]ache/

# Others
ClientBin/
[Ss]tyle[Cc]op.*
~$*
*~
*.dbmdl
*.dbproj.schemaview
*.pfx
*.publishsettings
node_modules/
orleans.codegen.cs

# RIA/Silverlight projects
Generated_Code/

# Backup & report files from converting an old project file
# to a newer Visual Studio version. Backup files are not needed,
# because we have git ;-)
_UpgradeReport_Files/
Backup*/
UpgradeLog*.XML
UpgradeLog*.htm

# SQL Server files
*.mdf
*.ldf

# Business Intelligence projects
*.rdl.data
*.bim.layout
*.bim_*.settings

# Microsoft Fakes
FakesAssemblies/

# GhostDoc plugin setting file
*.GhostDoc.xml

# Node.js Tools for Visual Studio
.ntvs_analysis.dat

# Visual Studio 6 build log
*.plg

# Visual Studio 6 workspace options file
*.opt

# Visual Studio LightSwitch build output
**/*.HTMLClient/GeneratedArtifacts
**/*.DesktopClient/GeneratedArtifacts
**/*.DesktopClient/ModelManifest.xml
**/*.Server/GeneratedArtifacts
**/*.Server/ModelManifest.xml
_Pvt_Extensions

# LightSwitch generated files
GeneratedArtifacts/
ModelManifest.xml

# Paket dependency manager
.paket/paket.exe

# FAKE - F# Make
.fake/

Notice: Array to string conversion in

mysql_fetch_assoc returns an array so you can not echo an array, need to print_r() otherwise particular string $money['money'].

How to show imageView full screen on imageView click?

use following property of ImageView for full size of image

 android:scaleType="fitXY"

ex :

      <ImageView
        android:id="@+id/tVHeader2"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scaleType="fitXY"
        android:gravity="center"
        android:src="@drawable/done_sunheading" />

1)Switch on other activity when click on image.

2)pass url in intent

3)Take imageview on that Activity and set above property of imageview

4)Get the url from intent and set that image.

but using this your image may be starched if it will of small size.

Can a java file have more than one class?

If you want to implement a public class, you must implement it in a file with the same name as that class. A single file can contain one public and optionally some private classes. This is useful if the classes are only used internally by the public class. Additionally the public class can also contain inner classes.

Although it is fine to have one or more private classes in a single source file, I would say that is more readable to use inner and anonymous classes instead. For example one can use an anonymous class to define a Comparator class inside a public class:

  public static Comparator MyComparator = new Comparator() {
    public int compare(Object obj, Object anotherObj) {

    }
  };

The Comparator class will normally require a separate file in order to be public. This way it is bundled with the class that uses it.

Excel error HRESULT: 0x800A03EC while trying to get range with cell's name

The error code 0x800A03EC (or -2146827284) means NAME_NOT_FOUND; in other words, you've asked for something, and Excel can't find it.

This is a generic code, which can apply to lots of things it can't find e.g. using properties which aren't valid at that time like PivotItem.SourceNameStandard throws this when a PivotItem doesn't have a filter applied. Worksheets["BLAHBLAH"] throws this, when the sheet doesn't exist etc. In general, you are asking for something with a specific name and it doesn't exist. As for why, that will taking some digging on your part.

Check your sheet definitely does have the Range you are asking for, or that the .CellName is definitely giving back the name of the range you are asking for.

Why is the GETDATE() an invalid identifier

SYSDATE and GETDATE perform identically.

SYSDATE is compatible with Oracle syntax, and GETDATE is compatible with Microsoft SQL Server syntax.

How to modify existing XML file with XmlDocument and XmlNode in C#

You need to do something like this:

// instantiate XmlDocument and load XML from file
XmlDocument doc = new XmlDocument();
doc.Load(@"D:\test.xml");

// get a list of nodes - in this case, I'm selecting all <AID> nodes under
// the <GroupAIDs> node - change to suit your needs
XmlNodeList aNodes = doc.SelectNodes("/Equipment/DataCollections/GroupAIDs/AID");

// loop through all AID nodes
foreach (XmlNode aNode in aNodes)
{
   // grab the "id" attribute
   XmlAttribute idAttribute = aNode.Attributes["id"];

   // check if that attribute even exists...
   if (idAttribute != null)
   {
      // if yes - read its current value
      string currentValue = idAttribute.Value;

      // here, you can now decide what to do - for demo purposes,
      // I just set the ID value to a fixed value if it was empty before
      if (string.IsNullOrEmpty(currentValue))
      {
         idAttribute.Value = "515";
      }
   }
}

// save the XmlDocument back to disk
doc.Save(@"D:\test2.xml");

Integrating MySQL with Python in Windows

Because I am running python in a (pylons/pyramid) virtualenv, I could not run the binary installers (helpfully) linked to previously.

I had problems following the steps with Willie's answer, but I determined that the problem is (probably) that I am running windows 7 x64 install, which puts the registry key for mysql in a slightly different location, specifically in my case (note: I am running version 5.5) in: "HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MySQL AB\MySQL Server 5.5".

HOWEVER, "HKEY_LOCAL_MACHINE\" cannot be included in the path or it will fail.

Also, I had to do a restart between steps 3 and 4.

After working through all of this, IMO it would have been smarter to run the entire python dev environment from cygwin.

Append TimeStamp to a File Name

Perhaps appending DateTime.Now.Ticks instead, is a tiny bit faster since you won't be creating 3 strings and the ticks value will always be unique also.

execJs: 'Could not find a JavaScript runtime' but execjs AND therubyracer are in Gemfile

I had the same problem on a staging server. I had no issues running rake tasks on my local development machine, but deploying to the staging server failed with the "Could not find a JavaScript runtime" error message while trying to run the assets:precompile rake task.

Of course, therubyracer and execjs were in my Gemfile, and I was using the latest versions. My Gemfile.lock files matched, and I further verified versions by running bundle show.

After searching around on Google, I ended up deleting all of my gems and reinstalling them which fixed the problem. I still don't know what the root cause was, but maybe this will help you.

Here's what my environment looks like, BTW:

Ubuntu 10.04.3 LTS
rbenv
Ruby 1.9.2-p290
bundler-1.0.21
execjs-1.3.0
therubyracer-0.9.9

DIV table colspan: how?

You could always use CSS to simply adjust the width and the height of those elements that you want to do a colspan and rowspan and then simply omit displaying the overlapped DIVs. For example:

<div class = 'td colspan3 rowspan5'> Some data </div>

<style>

 .td
 {
   display: table-cell;
 }

 .colspan3
 {
   width: 300px; /*3 times the standard cell width of 100px - colspan3 */
 }

 .rowspan5
 {
   height: 500px; /* 5 times the standard height of a cell - rowspan5 */
 }

</style>

GCC -fPIC option

I'll try to explain what has already been said in a simpler way.

Whenever a shared lib is loaded, the loader (the code on the OS which load any program you run) changes some addresses in the code depending on where the object was loaded to.

In the above example, the "111" in the non-PIC code is written by the loader the first time it was loaded.

For not shared objects, you may want it to be like that because the compiler can make some optimizations on that code.

For shared object, if another process will want to "link" to that code he must read it to the same virtual addresses or the "111" will make no sense. but that virtual-space may already be in use in the second process.

How good is Java's UUID.randomUUID?

Since most answers focused on the theory I think I can add something to the discussion by giving a practical test I did. In my database I have around 4.5 million UUIDs generated using Java 8 UUID.randomUUID(). The following ones are just some I found out:

c0f55f62-b990-47bc-8caa-f42313669948

c0f55f62-e81e-4253-8299-00b4322829d5

c0f55f62-4979-4e87-8cd9-1c556894e2bb

b9ea2498-fb32-40ef-91ef-0ba00060fe64

be87a209-2114-45b3-9d5a-86d00060fe64

4a8a74a6-e972-4069-b480-bdea1177b21f

12fb4958-bee2-4c89-8cf8-edea1177b21f

If it was truly random, the probability of having these kind of similar UUIDs would be considerably low (see edit), since we're considering only 4.5 million entries. So, although this function is good, in terms of not having collisions, for me it doesn't seem that good as it would be in theory.

Edit:

A lot of people seem to not understand this answer so I'll clarify my point: I know that the similarities are "small" and far from a full collision. However, I just wanted to compare the Java's UUID.randomUUID() with a true random number generator, which is the actual question.

In a true random number generator, the probability of the last case happening would be around $\large 1-e^{-\frac{4500000^2}{2\times 36^{11}}}$ = 0.007%. Therefore, I think my conclusion stands.

Formula is explained in this wiki article en.wikipedia.org/wiki/Birthday_problem

ImportError: No module named apiclient.discovery

use this

pip install --upgrade google-api-python-client google-auth-httplib2 google-auth-oauthlib

Difference between chr(13) and chr(10)

Chr(10) is the Line Feed character and Chr(13) is the Carriage Return character.

You probably won't notice a difference if you use only one or the other, but you might find yourself in a situation where the output doesn't show properly with only one or the other. So it's safer to include both.

Historically, Line Feed would move down a line but not return to column 1:

This  
    is  
        a  
            test.

Similarly Carriage Return would return to column 1 but not move down a line:

This  
is  
a  
test.

Paste this into a text editor and then choose to "show all characters", and you'll see both characters present at the end of each line. Better safe than sorry.

Node.js setting up environment specific configs to be used with everyauth

In brief

This kind of a setup is simple and elegant :

env.json

{
  "development": {
      "facebook_app_id": "facebook_dummy_dev_app_id",
      "facebook_app_secret": "facebook_dummy_dev_app_secret",
  }, 
  "production": {
      "facebook_app_id": "facebook_dummy_prod_app_id",
      "facebook_app_secret": "facebook_dummy_prod_app_secret",
  }
}

common.js

var env = require('env.json');

exports.config = function() {
  var node_env = process.env.NODE_ENV || 'development';
  return env[node_env];
};

app.js

var common = require('./routes/common')
var config = common.config();

var facebook_app_id = config.facebook_app_id;
// do something with facebook_app_id

To run in production mode : $ NODE_ENV=production node app.js

In detail

This solution is from : http://himanshu.gilani.info/blog/2012/09/26/bootstraping-a-node-dot-js-app-for-dev-slash-prod-environment/, check it out for more detail.

How to dynamically add a style for text-align using jQuery

You have the right idea, as documentation shows:

http://docs.jquery.com/CSS/css#namevalue

Are you sure you're correctly identify this with class or id?

For example, if your class is myElementClass

$('.myElementClass').css('text-align','center');

Also, I haven't worked with Firebug in a while, but are you looking at the dom and not the html? Your source isn't changed by javascript, but the dom is. Look in the dom tab and see if the change was applied.

How to specify an alternate location for the .m2 folder or settings.xml permanently?

You need to add this line into your settings.xml (or uncomment if it's already there).

<localRepository>C:\Users\me\.m2\repo</localRepository>

Also it's possible to run your commands with mvn clean install -gs C:\Users\me\.m2\settings.xml - this parameter will force maven to use different settings.xml then the default one (which is in $HOME/.m2/settings.xml)

What does the following Oracle error mean: invalid column index

I also got this type error, problem is wrong usage of parameters to statement like, Let's say you have a query like this

SELECT * FROM EMPLOYE E WHERE E.ID = ?

and for the preparedStatement object (JDBC) if you set the parameters like

preparedStatement.setXXX(1,value);
preparedStatement.setXXX(2,value)

then it results in SQLException: Invalid column index

So, I removed that second parameter setting to prepared statement then problem solved

When & why to use delegates?

Delegates Overview

Delegates have the following properties:

Delegates are similar to C++ function pointers, but are type safe.

Delegates allow methods to be passed as parameters.

Delegates can be used to define callback methods.

Delegates can be chained together; for example, multiple methods can be called on a single event.

Methods don't need to match the delegate signature exactly. For more information, see Covariance and Contra variance.

C# version 2.0 introduces the concept of Anonymous Methods, which permit code blocks to be passed as parameters in place of a separately defined method.

How to convert an Image to base64 string in java?

The problem is that you are returning the toString() of the call to Base64.encodeBase64(bytes) which returns a byte array. So what you get in the end is the default string representation of a byte array, which corresponds to the output you get.

Instead, you should do:

encodedfile = new String(Base64.encodeBase64(bytes), "UTF-8");

Python class input argument

Python Classes

class name:
    def __init__(self, name):
        self.name = name
        print("name: "+name)

Somewhere else:

john = name("john")

Output:
name: john

Modify SVG fill color when being served as Background-Image

Use the sepia filter along with hue-rotate, brightness, and saturation to create any color we want.

.colorize-pink {
  filter: brightness(0.5) sepia(1) hue-rotate(-70deg) saturate(5);
}

https://css-tricks.com/solved-with-css-colorizing-svg-backgrounds/

Prevent RequireJS from Caching Required Scripts

This is how I do it in Django / Flask (can be easily adapted to other languages / VCS systems):

In your config.py (I use this in python3, so you may need to tweak the encoding in python2)

import subprocess
GIT_HASH = subprocess.check_output(['git', 'rev-parse', 'HEAD']).strip().decode('utf-8')

Then in your template:

{% if config.DEBUG %}
     require.config({urlArgs: "bust=" + (new Date().getTime())});
{% else %}
    require.config({urlArgs: "bust=" + {{ config.GIT_HASH|tojson }}});
{% endif %}

Doesn't require manual build process
Only runs git rev-parse HEAD once when the app starts, and stores it in the config object

Port 80 is being used by SYSTEM (PID 4), what is that?

This works for me:

Right click on My Computer.
Select Manage.
Double click Services and Applications.
Then double click Services.
Right click on "World Wide Web Publishing Service".
Select Stop.

How to add fonts to create-react-app based projects?

You can use the WebFont module, which greatly simplifies the process.

render(){
  webfont.load({
     custom: {
       families: ['MyFont'],
       urls: ['/fonts/MyFont.woff']
     }
  });
  return (
    <div style={your style} >
      your text!
    </div>
  );
}

How would I stop a while loop after n amount of time?

Try this module: http://pypi.python.org/pypi/interruptingcow/

from interruptingcow import timeout
try:
    with timeout(60*5, exception=RuntimeError):
        while True:
            test = 0
            if test == 5:
                break
            test = test - 1
except RuntimeError:
    pass

How do you use math.random to generate random ints?

You can also use this way for getting random number between 1 and 100 as:

SecureRandom src=new SecureRandom();
int random=1 + src.nextInt(100);

C++ callback using class member

What you want to do is to make an interface which handles this code and all your classes implement the interface.

class IEventListener{
public:
   void OnEvent(int x) = 0;  // renamed Callback to OnEvent removed the instance, you can add it back if you want.
};


class MyClass :public IEventListener
{
    ...
    void OnEvent(int x); //typically such a function is NOT static. This wont work if it is static.
};

class YourClass :public IEventListener
{

Note that for this to work the "Callback" function is non static which i believe is an improvement. If you want it to be static, you need to do it as JaredC suggests with templates.

Printing variables in Python 3.4

Try the format syntax:

print ("{0}. {1} appears {2} times.".format(1, 'b', 3.1415))

Outputs:

1. b appears 3.1415 times.

The print function is called just like any other function, with parenthesis around all its arguments.

How to set width of a p:column in a p:dataTable in PrimeFaces 3.0?

For some reason, this was not working

<p:column headerText="" width="25px" sortBy="#{row.key}">

But this worked:

<p:column headerText="" width="25" sortBy="#{row.key}">

Difference between Iterator and Listiterator?

the following is that the difference between iterator and listIterator

iterator :

boolean hasNext();
E next();
void remove();

listIterator:

boolean hasNext();
E next();
boolean hasPrevious();
E previous();
int nextIndex();
int previousIndex();
void remove();
void set(E e);
void add(E e);

How to merge 2 JSON objects from 2 files using jq?

First, {"value": .value} can be abbreviated to just {value}.

Second, the --argfile option (available in jq 1.4 and jq 1.5) may be of interest as it avoids having to use the --slurp option.

Putting these together, the two objects in the two files can be combined in the specified way as follows:

$ jq -n --argfile o1 file1 --argfile o2 file2 '$o1 * $o2 | {value}'

The '-n' flag tells jq not to read from stdin, since inputs are coming from the --argfile options here.

Note on --argfile

The jq manual deprecates --argfile because its semantics are non-trivial: if the specified input file contains exactly one JSON entity, then that entity is read as is; otherwise, the items in the stream are wrapped in an array.

If you are uncomfortable using --argfile, there are several alternatives you may wish to consider. In doing so, be assured that using --slurpfile does not incur the inefficiencies of the -s command-line option when the latter is used with multiple files.

Use a URL to link to a Google map with a marker on it

If working with Basic4Android and looking for an easy fix to the problem, try this it works both Google maps and Openstreet even though OSM creates a bit of a messy result and thanx to [yndolok] for the google marker

GooglemLoc="https://www.google.com/maps/place/"&[Latitude]&"+"&[Longitude]&"/@"&[Latitude]&","&[Longitude]&",15z" 

GooglemRute="https://www.google.co.ls/maps/dir/"&[FrmLatt]&","&[FrmLong]&"/"&[ToLatt]&","&[FrmLong]&"/@"&[ScreenX]&","&[ScreenY]&",14z/data=!3m1!4b1!4m2!4m1!3e0?hl=en"  'route ?hl=en

OpenStreetLoc="https://www.openstreetmap.org/#map=16/"&[Latitude]&"/"&[Longitude]&"&layers=N"

OpenStreetRute="https://www.openstreetmap.org/directions?engine=osrm_car&route="&[FrmLatt]&"%2C"&[FrmLong]&"%3B"&[ToLatt]&"%2C"&[ToLong]&"#Map=15/"&[ScreenX]&"/"&[Screeny]&"&layers=N"

Restore a postgres backup file using the command line?

Restoring a postgres backup file depends on how did you take the backup in the first place.

If you used pg_dump with -F c or -F d you need to use pg_restore otherwise you can just use

psql -h localhost -p 5432 -U postgres < backupfile

9 ways to backup and restore postgres databases

Getting current directory in VBScript

'-----Implementation of VB6 App object in VBScript-----
Class clsApplication
    Property Get Path()
          Dim sTmp
          If IsObject(Server) Then
               'Classic ASP
               Path = Server.MapPath("../")
          ElseIf IsObject(WScript) Then 
               'Windows Scripting Host
               Path = Left(WScript.ScriptFullName, InStr(WScript.ScriptFullName, WScript.ScriptName) - 2)
          ElseIf IsObject(window) Then
               'Internet Explorer HTML Application (HTA)
               sTmp = Replace( Replace(Unescape(window.location), "file:///", "") ,"/", "\")
               Path = Left(sTmp, InstrRev( sTmp , "\") - 1)
          End If
    End Property
End Class
Dim App : Set App = New clsApplication 'use as App.Path

Switch case with conditions

You should not use switch for this scenario. This is the proper approach:

var cnt = $("#div1 p").length;

alert(cnt);

if (cnt >= 10 && cnt <= 20)
{
   alert('10');
}
else if (cnt >= 21 && cnt <= 30)
{
   alert('21');
}
else if (cnt >= 31 && cnt <= 40)
{
   alert('31');
}
else 
{
   alert('>41');
}

How can I get a user's media from Instagram without authenticating as a user?

You can use this API to retrieve public info of the instagram user:

https://api.lityapp.com/instagrams/thebrainscoop?limit=2 (edit: broken/malware link on Feb 2021)

If you don't set the limit parameter, the posts are limited at 12 by default

This api was made in SpringBoot with HtmlUnit as you can see in the code:

public JSONObject getPublicInstagramByUserName(String userName, Integer limit) {
    String html;
    WebClient webClient = new WebClient();

    try {
        webClient.getOptions().setCssEnabled(false);
        webClient.getOptions().setJavaScriptEnabled(false);
        webClient.getOptions().setThrowExceptionOnScriptError(false);
        webClient.getCookieManager().setCookiesEnabled(true);

        Page page = webClient.getPage("https://www.instagram.com/" + userName);
        WebResponse response = page.getWebResponse();

        html = response.getContentAsString();
    } catch (Exception ex) {
        ex.printStackTrace();

        throw new RuntimeException("Ocorreu um erro no Instagram");
    }

    String prefix = "static/bundles/es6/ProfilePageContainer.js";
    String suffix = "\"";
    String script = html.substring(html.indexOf(prefix));

    script = script.substring(0, script.indexOf(suffix));

    try {
        Page page = webClient.getPage("https://www.instagram.com/" + script);
        WebResponse response = page.getWebResponse();

        script = response.getContentAsString();
    } catch (Exception ex) {
        ex.printStackTrace();

        throw new RuntimeException("Ocorreu um erro no Instagram");
    }

    prefix = "l.pagination},queryId:\"";

    String queryHash = script.substring(script.indexOf(prefix) + prefix.length());

    queryHash = queryHash.substring(0, queryHash.indexOf(suffix));
    prefix = "<script type=\"text/javascript\">window._sharedData = ";
    suffix = ";</script>";
    html = html.substring(html.indexOf(prefix) + prefix.length());
    html = html.substring(0, html.indexOf(suffix));

    JSONObject json = new JSONObject(html);
    JSONObject entryData = json.getJSONObject("entry_data");
    JSONObject profilePage = (JSONObject) entryData.getJSONArray("ProfilePage").get(0);
    JSONObject graphql = profilePage.getJSONObject("graphql");
    JSONObject user = graphql.getJSONObject("user");
    JSONObject response = new JSONObject();

    response.put("id", user.getString("id"));
    response.put("username", user.getString("username"));
    response.put("fullName", user.getString("full_name"));
    response.put("followedBy", user.getJSONObject("edge_followed_by").getLong("count"));
    response.put("following", user.getJSONObject("edge_follow").getLong("count"));
    response.put("isBusinessAccount", user.getBoolean("is_business_account"));
    response.put("photoUrl", user.getString("profile_pic_url"));
    response.put("photoUrlHD", user.getString("profile_pic_url_hd"));

    JSONObject edgeOwnerToTimelineMedia = user.getJSONObject("edge_owner_to_timeline_media");
    JSONArray posts = new JSONArray();

    try {
        loadPublicInstagramPosts(webClient, queryHash, user.getString("id"), posts, edgeOwnerToTimelineMedia, limit == null ? 12 : limit);
    } catch (Exception ex) {
        ex.printStackTrace();

        throw new RuntimeException("Você fez muitas chamadas, tente mais tarde");
    }

    response.put("posts", posts);

    return response;
}

private void loadPublicInstagramPosts(WebClient webClient, String queryHash, String userId, JSONArray posts, JSONObject edgeOwnerToTimelineMedia, Integer limit) throws IOException {
    JSONArray edges = edgeOwnerToTimelineMedia.getJSONArray("edges");

    for (Object elem : edges) {
        if (limit != null && posts.length() == limit) {
            return;
        }

        JSONObject node = ((JSONObject) elem).getJSONObject("node");

        if (node.getBoolean("is_video")) {
            continue;
        }

        JSONObject post = new JSONObject();

        post.put("id", node.getString("id"));
        post.put("shortcode", node.getString("shortcode"));

        JSONArray captionEdges = node.getJSONObject("edge_media_to_caption").getJSONArray("edges");

        if (captionEdges.length() > 0) {
            JSONObject captionNode = ((JSONObject) captionEdges.get(0)).getJSONObject("node");

            post.put("caption", captionNode.getString("text"));
        } else {
            post.put("caption", (Object) null);
        }

        post.put("photoUrl", node.getString("display_url"));

        JSONObject dimensions = node.getJSONObject("dimensions");

        post.put("photoWidth", dimensions.getLong("width"));
        post.put("photoHeight", dimensions.getLong("height"));

        JSONArray thumbnailResources = node.getJSONArray("thumbnail_resources");
        JSONArray thumbnails = new JSONArray();

        for (Object elem2 : thumbnailResources) {
            JSONObject obj = (JSONObject) elem2;
            JSONObject thumbnail = new JSONObject();

            thumbnail.put("photoUrl", obj.getString("src"));
            thumbnail.put("photoWidth", obj.getLong("config_width"));
            thumbnail.put("photoHeight", obj.getLong("config_height"));
            thumbnails.put(thumbnail);
        }

        post.put("thumbnails", thumbnails);
        posts.put(post);
    }

    JSONObject pageInfo = edgeOwnerToTimelineMedia.getJSONObject("page_info");

    if (!pageInfo.getBoolean("has_next_page")) {
        return;
    }

    String endCursor = pageInfo.getString("end_cursor");
    String variables = "{\"id\":\"" + userId + "\",\"first\":12,\"after\":\"" + endCursor + "\"}";

    String url = "https://www.instagram.com/graphql/query/?query_hash=" + queryHash + "&variables=" + URLEncoder.encode(variables, "UTF-8");
    Page page = webClient.getPage(url);
    WebResponse response = page.getWebResponse();
    String content = response.getContentAsString();
    JSONObject json = new JSONObject(content);

    loadPublicInstagramPosts(webClient, queryHash, userId, posts, json.getJSONObject("data").getJSONObject("user").getJSONObject("edge_owner_to_timeline_media"), limit);
}

It's an example of response:

{
  "id": "290482318",
  "username": "thebrainscoop",
  "fullName": "Official Fan Page",
  "followedBy": 1023,
  "following": 6,
  "isBusinessAccount": false,
  "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/447ffd0262082f373acf3d467435f130/5C709C77/t51.2885-19/11351770_612904665516559_678168252_a.jpg",
  "photoUrlHD": "https://scontent-gru2-1.cdninstagram.com/vp/447ffd0262082f373acf3d467435f130/5C709C77/t51.2885-19/11351770_612904665516559_678168252_a.jpg",
  "posts": [
    {
      "id": "1430331382090378714",
      "shortcode": "BPZjtBUly3a",
      "caption": "If I have any active followers anymore; hello! I'm Brianna, and I created this account when I was just 12 years old to show my love for The Brain Scoop. I'm now nearly finished high school, and just rediscovered it. I just wanted to see if anyone is still active on here, and also correct some of my past mistakes - being a child at the time, I didn't realise I had to credit artists for their work, so I'm going to try to correct that post haste. Also; the font in my bio is horrendous. Why'd I think that was a good idea? Anyway, this is a beautiful artwork of the long-tailed pangolin by @chelsealinaeve . Check her out!",
      "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/ab823331376ca46136457f4654bf2880/5CAD48E4/t51.2885-15/e35/16110915_400942200241213_3503127351280009216_n.jpg",
      "photoWidth": 640,
      "photoHeight": 457,
      "thumbnails": [
        {
          "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/43b195566d0ef2ad5f4663ff76d62d23/5C76D756/t51.2885-15/e35/c91.0.457.457/s150x150/16110915_400942200241213_3503127351280009216_n.jpg",
          "photoWidth": 150,
          "photoHeight": 150
        },
        {
          "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/ae39043a7ac050c56d741d8b4355c185/5C93971C/t51.2885-15/e35/c91.0.457.457/s240x240/16110915_400942200241213_3503127351280009216_n.jpg",
          "photoWidth": 240,
          "photoHeight": 240
        },
        {
          "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/ae7a22d09e3ef98d0a6bbf31d621a3b7/5CACBBA6/t51.2885-15/e35/c91.0.457.457/s320x320/16110915_400942200241213_3503127351280009216_n.jpg",
          "photoWidth": 320,
          "photoHeight": 320
        },
        {
          "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/1439dc72b70e7c0c0a3afcc30970bb13/5C8E2923/t51.2885-15/e35/c91.0.457.457/16110915_400942200241213_3503127351280009216_n.jpg",
          "photoWidth": 480,
          "photoHeight": 480
        },
        {
          "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/1439dc72b70e7c0c0a3afcc30970bb13/5C8E2923/t51.2885-15/e35/c91.0.457.457/16110915_400942200241213_3503127351280009216_n.jpg",
          "photoWidth": 640,
          "photoHeight": 640
        }
      ]
    },
    {
      "id": "442527661838057235",
      "shortcode": "YkLJBXJD8T",
      "caption": null,
      "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/dc94b38da679826b9ac94ccd2bcc4928/5C7CDF93/t51.2885-15/e15/11327349_860747310663863_2105199307_n.jpg",
      "photoWidth": 612,
      "photoHeight": 612,
      "thumbnails": [
        {
          "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/c1153c6513c44a6463d897e14b2d8f06/5CB13ADD/t51.2885-15/e15/s150x150/11327349_860747310663863_2105199307_n.jpg",
          "photoWidth": 150,
          "photoHeight": 150
        },
        {
          "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/47e60ec8bca5a1382cd9ac562439d48c/5CAE6A82/t51.2885-15/e15/s240x240/11327349_860747310663863_2105199307_n.jpg",
          "photoWidth": 240,
          "photoHeight": 240
        },
        {
          "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/da0ee5b666ab40e4adc1119e2edca014/5CADCB59/t51.2885-15/e15/s320x320/11327349_860747310663863_2105199307_n.jpg",
          "photoWidth": 320,
          "photoHeight": 320
        },
        {
          "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/02ee23571322ea8d0992e81e72f80ef2/5C741048/t51.2885-15/e15/s480x480/11327349_860747310663863_2105199307_n.jpg",
          "photoWidth": 480,
          "photoHeight": 480
        },
        {
          "photoUrl": "https://scontent-gru2-1.cdninstagram.com/vp/dc94b38da679826b9ac94ccd2bcc4928/5C7CDF93/t51.2885-15/e15/11327349_860747310663863_2105199307_n.jpg",
          "photoWidth": 640,
          "photoHeight": 640
        }
      ]
    }
  ]
}

How can I display a tooltip on an HTML "option" tag?

If increasing the number of visible options is available, the following might work for you:

<html>
    <head>
        <title>Select Option Tooltip Test</title>
        <script>
            function showIETooltip(e){
                if(!e){var e = window.event;}
                var obj = e.srcElement;
                var objHeight = obj.offsetHeight;
                var optionCount = obj.options.length;
                var eX = e.offsetX;
                var eY = e.offsetY;

                //vertical position within select will roughly give the moused over option...
                var hoverOptionIndex = Math.floor(eY / (objHeight / optionCount));

                var tooltip = document.getElementById('dvDiv');
                tooltip.innerHTML = obj.options[hoverOptionIndex].title;

                mouseX=e.pageX?e.pageX:e.clientX;
                mouseY=e.pageY?e.pageY:e.clientY;

                tooltip.style.left=mouseX+10;
                tooltip.style.top=mouseY;

                tooltip.style.display = 'block';

                var frm = document.getElementById("frm");
                frm.style.left = tooltip.style.left;
                frm.style.top = tooltip.style.top;
                frm.style.height = tooltip.offsetHeight;
                frm.style.width = tooltip.offsetWidth;
                frm.style.display = "block";
            }
            function hideIETooltip(e){
                var tooltip = document.getElementById('dvDiv');
                var iFrm = document.getElementById('frm');
                tooltip.innerHTML = '';
                tooltip.style.display = 'none';
                iFrm.style.display = 'none';
            }
        </script>
    </head>
    <body>
        <select onmousemove="showIETooltip();" onmouseout="hideIETooltip();" size="10">
            <option title="Option #1" value="1">Option #1</option>
            <option title="Option #2" value="2">Option #2</option>
            <option title="Option #3" value="3">Option #3</option>
            <option title="Option #4" value="4">Option #4</option>
            <option title="Option #5" value="5">Option #5</option>
            <option title="Option #6" value="6">Option #6</option>
            <option title="Option #7" value="7">Option #7</option>
            <option title="Option #8" value="8">Option #8</option>
            <option title="Option #9" value="9">Option #9</option>
            <option title="Option #10" value="10">Option #10</option>
        </select>
        <div id="dvDiv" style="display:none;position:absolute;padding:1px;border:1px solid #333333;;background-color:#fffedf;font-size:smaller;z-index:999;"></div>
        <iframe id="frm" style="display:none;position:absolute;z-index:998"></iframe>
    </body>
</html>

how to display variable value in alert box?

Try innerText property:

var content = document.getElementById("one").innerText;
alert(content);

See also this fiddle http://fiddle.jshell.net/4g8vb/

Populate a datagridview with sql query results

Here's your code fixed up. Next forget bindingsource

 var select = "SELECT * FROM tblEmployee";
 var c = new SqlConnection(yourConnectionString); // Your Connection String here
 var dataAdapter = new SqlDataAdapter(select, c); 

 var commandBuilder = new SqlCommandBuilder(dataAdapter);
 var ds = new DataSet();
 dataAdapter.Fill(ds);
 dataGridView1.ReadOnly = true; 
 dataGridView1.DataSource = ds.Tables[0];

What's the difference between "static" and "static inline" function?

By default, an inline definition is only valid in the current translation unit.

If the storage class is extern, the identifier has external linkage and the inline definition also provides the external definition.

If the storage class is static, the identifier has internal linkage and the inline definition is invisible in other translation units.

If the storage class is unspecified, the inline definition is only visible in the current translation unit, but the identifier still has external linkage and an external definition must be provided in a different translation unit. The compiler is free to use either the inline or the external definition if the function is called within the current translation unit.

As the compiler is free to inline (and to not inline) any function whose definition is visible in the current translation unit (and, thanks to link-time optimizations, even in different translation units, though the C standard doesn't really account for that), for most practical purposes, there's no difference between static and static inline function definitions.

The inline specifier (like the register storage class) is only a compiler hint, and the compiler is free to completely ignore it. Standards-compliant non-optimizing compilers only have to honor their side-effects, and optimizing compilers will do these optimizations with or without explicit hints.

inline and register are not useless, though, as they instruct the compiler to throw errors when the programmer writes code that would make the optimizations impossible: An external inline definition can't reference identifiers with internal linkage (as these would be unavailable in a different translation unit) or define modifiable local variables with static storage duration (as these wouldn't share state accross translation units), and you can't take addresses of register-qualified variables.

Personally, I use the convention to mark static function definitions within headers also inline, as the main reason for putting function definitions in header files is to make them inlinable.

In general, I only use static inline function and static const object definitions in addition to extern declarations within headers.

I've never written an inline function with a storage class different from static.

How to set shadows in React Native for android?

Another solution without using a third-party library is using elevation.

Pulled from react-native documentation. https://facebook.github.io/react-native/docs/view.html

(Android-only) Sets the elevation of a view, using Android's underlying elevation API. This adds a drop shadow to the item and affects z-order for overlapping views. Only supported on Android 5.0+, has no effect on earlier versions.

elevation will go into the style property and it can be implemented like so.

<View style={{ elevation: 2 }}>
    {children}
</View>

The higher the elevation, the bigger the shadow. Hope this helps!

Bootstrap tooltips not working

jQuery prevent change for select

Implement custom readonly like eventHandler

<select id='country' data-changeable=false>
  <option selected value="INDIA">India</option>
  <option value="USA">United States</option>
  <option value="UK">United Kingdom</option>
</select>

<script>
    var lastSelected = $("#country option:selected");

    $("#country").on("change", function() {
       if(!$(this).data(changeable)) {
            lastSelected.attr("selected", true);              
       }        
    });

    $("#country").on("click", function() {
       lastSelected = $("#country option:selected");
    });
</script>

Demo : https://jsfiddle.net/0mvajuay/8/

Redefine tab as 4 spaces

:set sw=4

See Mastering the VI editor

Add text to Existing PDF using Python

Leveraging David Dehghan's answer above, the following works in Python 2.7.13:

from PyPDF2 import PdfFileWriter, PdfFileReader, PdfFileMerger

import StringIO

from reportlab.pdfgen import canvas
from reportlab.lib.pagesizes import letter

packet = StringIO.StringIO()
# create a new PDF with Reportlab
can = canvas.Canvas(packet, pagesize=letter)
can.drawString(290, 720, "Hello world")
can.save()

#move to the beginning of the StringIO buffer
packet.seek(0)
new_pdf = PdfFileReader(packet)
# read your existing PDF
existing_pdf = PdfFileReader("original.pdf")
output = PdfFileWriter()
# add the "watermark" (which is the new pdf) on the existing page
page = existing_pdf.getPage(0)
page.mergePage(new_pdf.getPage(0))
output.addPage(page)
# finally, write "output" to a real file
outputStream = open("destination.pdf", "wb")
output.write(outputStream)
outputStream.close()

Getting index value on razor foreach

Take a look at this solution using Linq. His example is similar in that he needed different markup for every 3rd item.

foreach( var myItem in Model.Members.Select(x,i) => new {Member = x, Index = i){
    ...
}

Unable to establish SSL connection upon wget on Ubuntu 14.04 LTS

If you trust the host, either add the valid certificate, specify --no-check-certificate or add:

check_certificate = off

into your ~/.wgetrc.

In some rare cases, your system time could be out-of-sync therefore invalidating the certificates.

What is the proper way to URL encode Unicode characters?

I would always encode in UTF-8. From the Wikipedia page on percent encoding:

The generic URI syntax mandates that new URI schemes that provide for the representation of character data in a URI must, in effect, represent characters from the unreserved set without translation, and should convert all other characters to bytes according to UTF-8, and then percent-encode those values. This requirement was introduced in January 2005 with the publication of RFC 3986. URI schemes introduced before this date are not affected.

It seems like because there were other accepted ways of doing URL encoding in the past, browsers attempt several methods of decoding a URI, but if you're the one doing the encoding you should use UTF-8.

how to create insert new nodes in JsonNode?

These methods are in ObjectNode: the division is such that most read operations are included in JsonNode, but mutations in ObjectNode and ArrayNode.

Note that you can just change first line to be:

ObjectNode jNode = mapper.createObjectNode();
// version ObjectMapper has should return ObjectNode type

ObjectNode jNode = (ObjectNode) objectCodec.createObjectNode();
// ObjectCodec is in core part, must be of type JsonNode so need cast

How to recursively delete an entire directory with PowerShell 2.0?

rm -r ./folder -Force

...worked for me

How to format a date using ng-model?

In Angular2+ for anyone interested:

<input type="text" placeholder="My Date" [ngModel]="myDate | date: 'longDate'">

with type of filters in DatePipe Angular.

Why are my CSS3 media queries not working on mobile devices?

All three of these were helpful tips, but it looks like I needed to add a meta tag:

<meta content="width=device-width, initial-scale=1" name="viewport" />

Now it seems to work in both Android (2.2) and iPhone all right...

Stored Procedure error ORA-06550

create or replace procedure point_triangle
AS
BEGIN
FOR thisteam in (select FIRSTNAME,LASTNAME,SUM(PTS)  from PLAYERREGULARSEASON  where TEAM    = 'IND' group by FIRSTNAME, LASTNAME order by SUM(PTS) DESC)

LOOP
dbms_output.put_line(thisteam.FIRSTNAME|| ' ' || thisteam.LASTNAME || ':' || thisteam.PTS);
END LOOP;

END;
/

Sum of values in an array using jQuery

In http://bugs.jquery.com/ticket/1886 it becomes obvious that the jQuery devs have serious mental issues reg. functional programming inspired additions. Somehow it's good to have some fundamental things (like map) but not others (like reduce), unless it reduces jQuery's overall filesize. Go figure.

Helpfully, someone placed code to use the normal reduce function for jQuery arrays:

$.fn.reduce = [].reduce;

Now we can use a simple reduce function to create a summation:

//where X is a jQuery array
X.reduce(function(a,b){ return a + b; });
// (change "a" into parseFloat("a") if the first a is a string)

Lastly, as some older browsers hadn't yet implemented reduce, a polyfill can be taken from MDN (it's big but I guess it has the exact same behavior, which is desirable):

if ( 'function' !== typeof Array.prototype.reduce ) {
    Array.prototype.reduce = function( callback /*, initialValue*/ ) {
        'use strict';
        if ( null === this || 'undefined' === typeof this ) {
          throw new TypeError(
             'Array.prototype.reduce called on null or undefined' );
        }
        if ( 'function' !== typeof callback ) {
          throw new TypeError( callback + ' is not a function' );
        }
        var t = Object( this ), len = t.length >>> 0, k = 0, value;
        if ( arguments.length >= 2 ) {
          value = arguments[1];
        } else {
          while ( k < len && ! k in t ) k++; 
          if ( k >= len )
            throw new TypeError('Reduce of empty array with no initial value');
          value = t[ k++ ];
        }
        for ( ; k < len ; k++ ) {
          if ( k in t ) {
             value = callback( value, t[k], k, t );
          }
        }
        return value;
      };
    }

When to use pthread_exit() and when to use pthread_join() in Linux?

As explained in the openpub documentations,

pthread_exit() will exit the thread that calls it.

In your case since the main calls it, main thread will terminate whereas your spawned threads will continue to execute. This is mostly used in cases where the main thread is only required to spawn threads and leave the threads to do their job

pthread_join will suspend execution of the thread that has called it unless the target thread terminates

This is useful in cases when you want to wait for thread/s to terminate before further processing in main thread.

How to show empty data message in Datatables

If you want to customize the message that being shown on empty table use this:

$('#example').dataTable( {
    "oLanguage": {
        "sEmptyTable":     "My Custom Message On Empty Table"
    }
} );

Since Datatable 1.10 you can do the following:

$('#example').DataTable( {
    "language": {
        "emptyTable":     "My Custom Message On Empty Table"
    }
} );

For the complete availble datatables custom messages for the table take a look at the following link reference/option/language

Pretty printing XML with javascript

This my version, maybe usefull for others, using String builder Saw that someone had the same piece of code.

    public String FormatXml(String xml, String tab)
    {
        var sb = new StringBuilder();
        int indent = 0;
        // find all elements
        foreach (string node in Regex.Split(xml,@">\s*<"))
        {
            // if at end, lower indent
            if (Regex.IsMatch(node, @"^\/\w")) indent--;
            sb.AppendLine(String.Format("{0}<{1}>", string.Concat(Enumerable.Repeat(tab, indent).ToArray()), node));
            // if at start, increase indent
            if (Regex.IsMatch(node, @"^<?\w[^>]*[^\/]$")) indent++;
        }
        // correct first < and last > from the output
        String result = sb.ToString().Substring(1);
        return result.Remove(result.Length - Environment.NewLine.Length-1);
    }

SQL Server - Adding a string to a text column (concat equivalent)

UPDATE test SET a = CONCAT(a, "more text")

What is the iPad user agent?

From a real device:

Mozilla/5.0 (iPad; U; CPU OS OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B367 Safari/531.21.10

How to save final model using keras?

Generally, we save the model and weights in the same file by calling the save() function.

For saving,

model.compile(optimizer='adam',
              loss = 'categorical_crossentropy',
              metrics = ["accuracy"])

model.fit(X_train, Y_train,
         batch_size = 32,
         epochs= 10,
         verbose = 2, 
         validation_data=(X_test, Y_test))

#here I have use filename as "my_model", you can choose whatever you want to.

model.save("my_model.h5") #using h5 extension
print("model saved!!!")

For Loading the model,

from keras.models import load_model

model = load_model('my_model.h5')
model.summary()

In this case, we can simply save and load the model without re-compiling our model again. Note - This is the preferred way for saving and loading your Keras model.

Search for value in DataGridView in a column

It's better also to separate your logic in another method, or maybe in another class.

This method will help you retreive the DataGridViewCell object in which the text was found.

    /// <summary>
    /// Check if a given text exists in the given DataGridView at a given column index
    /// </summary>
    /// <param name="searchText"></param>
    /// <param name="dataGridView"></param>
    /// <param name="columnIndex"></param>
    /// <returns>The cell in which the searchText was found</returns>
    private DataGridViewCell GetCellWhereTextExistsInGridView(string searchText, DataGridView dataGridView, int columnIndex)
    {
        DataGridViewCell cellWhereTextIsMet = null;

        // For every row in the grid (obviously)
        foreach (DataGridViewRow row in dataGridView.Rows)
        {
            // I did not test this case, but cell.Value is an object, and objects can be null
            // So check if the cell is null before using .ToString()
            if (row.Cells[columnIndex].Value != null && searchText == row.Cells[columnIndex].Value.ToString())
            {
                // the searchText is equals to the text in this cell.
                cellWhereTextIsMet = row.Cells[columnIndex];
                break;
            }
        }

        return cellWhereTextIsMet;
    }

    private void button_click(object sender, EventArgs e)
    {
        DataGridViewCell cell = GetCellWhereTextExistsInGridView(textBox1.Text, myGridView, 2);
        if (cell != null)
        {
            // Value exists in the grid
            // you can do extra stuff on the cell
            cell.Style = new DataGridViewCellStyle { ForeColor = Color.Red };
        }
        else
        {
            // Value does not exist in the grid
        }
    }

How to configure robots.txt to allow everything?

If you want to allow every bot to crawl everything, this is the best way to specify it in your robots.txt:

User-agent: *
Disallow:

Note that the Disallow field has an empty value, which means according to the specification:

Any empty value, indicates that all URLs can be retrieved.

Your way (with Allow: / instead of Disallow:) works, too, but Allow is not part of the original robots.txt specification, so it’s not supported by all bots (many popular ones support it, though, like the Googlebot). That said, unrecognized fields have to be ignored, and for bots that don’t recognize Allow, the result would be the same in this case anyway: if nothing is forbidden to be crawled (with Disallow), everything is allowed to be crawled.
However, formally (per the original spec) it’s an invalid record, because at least one Disallow field is required:

At least one Disallow field needs to be present in a record.

Checking if a string array contains a value, and if so, getting its position

You can try this, it looks up for the index containing this element, and it sets the index number as the int, then it checks if the int is greater then -1, so if it's 0 or more, then it means it found such an index - as arrays are 0 based.

string[] Selection = {"First", "Second", "Third", "Fourth"};
string Valid = "Third";    // You can change this to a Console.ReadLine() to 
    //use user input 
int temp = Array.IndexOf(Selection, Valid); // it gets the index of 'Valid', 
                // in our case it's "Third"
            if (temp > -1)
                Console.WriteLine("Valid selection");
            }
            else
            {
                Console.WriteLine("Not a valid selection");
            }

get selected value in datePicker and format it

var dateObject = $("#datePickerInput").datepicker('getDate');
$.datepicker.formatDate('dd MM, yy', dateObject);

What does java.lang.Thread.interrupt() do?

If the targeted thread has been waiting (by calling wait(), or some other related methods that essentially do the same thing, such as sleep()), it will be interrupted, meaning that it stops waiting for what it was waiting for and receive an InterruptedException instead.

It is completely up to the thread itself (the code that called wait()) to decide what to do in this situation. It does not automatically terminate the thread.

It is sometimes used in combination with a termination flag. When interrupted, the thread could check this flag, and then shut itself down. But again, this is just a convention.

How to get these two divs side-by-side?

Best that works for me:

 .left{
   width:140px;
   float:left;
   height:100%;
 }

 .right{
   margin-left:140px;
 }

http://jsfiddle.net/jiantongc/7uVNN/

How to get All input of POST in Laravel

its better to use the Dependency than to attache it to the class.

public function add_question(Request $request)
{
    return Request::all();
}

or if you prefer using input variable use

public function add_question(Request $input)
{
    return $input::all();
}

you can now use the global request method provided by laravel

request()

for example to get the first_name of a form input.

request()->first_name
// or
request('first_name')

Retrieve CPU usage and memory usage of a single process on Linux?

ps aux|awk  '{print $2,$3,$4}'|grep PID

where the first column is the PID,second column CPU usage ,third column memory usage.

How Can I Bypass the X-Frame-Options: SAMEORIGIN HTTP Header?

If the 2nd company is happy for you to access their content in an IFrame then they need to take the restriction off - they can do this fairly easily in the IIS config.

There's nothing you can do to circumvent it and anything that does work should get patched quickly in a security hotfix. You can't tell the browser to just render the frame if the source content header says not allowed in frames. That would make it easier for session hijacking.

If the content is GET only you don't post data back then you could get the page server side and proxy the content without the header, but then any post back should get invalidated.

How to add a new row to an empty numpy array

I want to do a for loop, yet with askewchan's method it does not work well, so I have modified it.

x = np.empty((0,3))
y = np.array([1,2,3])
for i in ...
    x = np.vstack((x,y))

Basic communication between two fragments

Some of the other examples (and even the documentation at the time of this writing) use outdated onAttach methods. Here is a full updated example.

Notes

You don't want the Fragments talking directly to each other or to the Activity. That ties them to a particular Activity and makes reuse difficult.
The solution is to make an callback listener interface that the Activity will implement. When the Fragment wants to send a message to another Fragment or its parent activity, it can do it through the interface.
It is ok for the Activity to communicate directly to its child fragment public methods.
Thus the Activity serves as the controller, passing messages from one fragment to another.

Code

MainActivity.java

public class MainActivity extends AppCompatActivity implements GreenFragment.OnGreenFragmentListener {

    private static final String BLUE_TAG = "blue";
    private static final String GREEN_TAG = "green";
    BlueFragment mBlueFragment;
    GreenFragment mGreenFragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // add fragments
        FragmentManager fragmentManager = getSupportFragmentManager();

        mBlueFragment = (BlueFragment) fragmentManager.findFragmentByTag(BLUE_TAG);
        if (mBlueFragment == null) {
            mBlueFragment = new BlueFragment();
            fragmentManager.beginTransaction().add(R.id.blue_fragment_container, mBlueFragment, BLUE_TAG).commit();
        }

        mGreenFragment = (GreenFragment) fragmentManager.findFragmentByTag(GREEN_TAG);
        if (mGreenFragment == null) {
            mGreenFragment = new GreenFragment();
            fragmentManager.beginTransaction().add(R.id.green_fragment_container, mGreenFragment, GREEN_TAG).commit();
        }
    }

    // The Activity handles receiving a message from one Fragment
    // and passing it on to the other Fragment
    @Override
    public void messageFromGreenFragment(String message) {
        mBlueFragment.youveGotMail(message);
    }
}

GreenFragment.java

public class GreenFragment extends Fragment {

    private OnGreenFragmentListener mCallback;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_green, container, false);

        Button button = v.findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String message = "Hello, Blue! I'm Green.";
                mCallback.messageFromGreenFragment(message);
            }
        });

        return v;
    }

    // This is the interface that the Activity will implement
    // so that this Fragment can communicate with the Activity.
    public interface OnGreenFragmentListener {
        void messageFromGreenFragment(String text);
    }

    // This method insures that the Activity has actually implemented our
    // listener and that it isn't null.
    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        if (context instanceof OnGreenFragmentListener) {
            mCallback = (OnGreenFragmentListener) context;
        } else {
            throw new RuntimeException(context.toString()
                    + " must implement OnGreenFragmentListener");
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mCallback = null;
    }
}

BlueFragment.java

public class BlueFragment extends Fragment {

    private TextView mTextView;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_blue, container, false);
        mTextView = v.findViewById(R.id.textview);
        return v;
    }

    // This is a public method that the Activity can use to communicate
    // directly with this Fragment
    public void youveGotMail(String message) {
        mTextView.setText(message);
    }
}

XML

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="16dp">

    <!-- Green Fragment container -->
    <FrameLayout
        android:id="@+id/green_fragment_container"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:layout_marginBottom="16dp" />

    <!-- Blue Fragment container -->
    <FrameLayout
        android:id="@+id/blue_fragment_container"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

</LinearLayout>

fragment_green.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:background="#98e8ba"
              android:padding="8dp"
              android:layout_width="match_parent"
              android:layout_height="match_parent">

    <Button
        android:id="@+id/button"
        android:text="send message to blue"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

fragment_blue.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:background="#30c9fb"
              android:padding="16dp"
              android:layout_width="match_parent"
              android:layout_height="match_parent">

    <TextView
        android:id="@+id/textview"
        android:text="TextView"
        android:textSize="24sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

Best C# API to create PDF

My work uses Winnovative's PDF generator (We've used it mainly to convert HTML to PDF, but you can generate it other ways as well)

Javascript logical "!==" operator?

The !== opererator tests whether values are not equal or not the same type. i.e.

var x = 5;
var y = '5';
var 1 = y !== x; // true
var 2 = y != x; // false

Creating a textarea with auto-resize

This is a jQuery version of Moussawi7's answer.

_x000D_

$(function() {
  $("textarea.auto-grow").on("input", function() {
    var element = $(this)[0];
    element.style.height = "5px";
    element.style.height = (element.scrollHeight) + "px";
  });
})

_x000D_

textarea {
  resize: none;
  overflow: auto;
  width: 100%;
  min-height: 50px;
  max-height: 150px;
}

_x000D_

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<textarea class="auto-grow"></textarea>

_x000D_

Openssl : error "self signed certificate in certificate chain"

Here is one-liner to verify certificate chain:

openssl verify -verbose -x509_strict -CAfile ca.pem cert_chain.pem

This doesn't require to install CA anywhere.

See How does an SSL certificate chain bundle work? for details.

How to install Maven 3 on Ubuntu 18.04/17.04/16.10/16.04 LTS/15.10/15.04/14.10/14.04 LTS/13.10/13.04 by using apt-get?

It's best to use miske's answer.

Properly installing natecarlson's repository

If you really want to use natecarlson's repository, the instructions just below can do any of the following:

set it up from scratch
repair it if apt-get update gives a 404 error after add-apt-repository
repair it if apt-get update gives a NO_PUBKEY error after manually adding it to /etc/apt/sources.list

Open a terminal and run the following:

sudo -i

Enter your password if necessary, then paste the following into the terminal:

export GOOD_RELEASE='precise'
export BAD_RELEASE="`lsb_release -cs`"
cd /etc/apt
sed -i '/natecarlson\/maven3/d' sources.list
cd sources.list.d
rm -f natecarlson-maven3-*.list*
apt-add-repository -y ppa:natecarlson/maven3
mv natecarlson-maven3-${BAD_RELEASE}.list natecarlson-maven3-${GOOD_RELEASE}.list
sed -i "s/${BAD_RELEASE}/${GOOD_RELEASE}/" natecarlson-maven3-${GOOD_RELEASE}.list
apt-get update
exit
echo Done!

Removing natecarlson's repository

If you installed natecarlson's repository (either using add-apt-repository or manually added to /etc/apt/sources.list) and you don't want it anymore, open a terminal and run the following:

sudo -i

Enter your password if necessary, then paste the following into the terminal:

cd /etc/apt
sed -i '/natecarlson\/maven3/d' sources.list
cd sources.list.d
rm -f natecarlson-maven3-*.list*
apt-get update
exit
echo Done!

Returning value that was passed into a method

The generic Returns<T> method can handle this situation nicely.

_mock.Setup(x => x.DoSomething(It.IsAny<string>())).Returns<string>(x => x);

Or if the method requires multiple inputs, specify them like so:

_mock.Setup(x => x.DoSomething(It.IsAny<string>(), It.IsAny<int>())).Returns((string x, int y) => x);

How do I align spans or divs horizontally?

What you might like to do is look up CSS grid based layouts. This layout method involves specifying some CSS classes to align the page contents to a grid structure. It's more closely related to print-bsed layout than web-based, but it's a technique used on a lot of websites to layout the content into a structure without having to resort to tables.

Try this for starters from Smashing Magazine.

Delete dynamically-generated table row using jQuery

  $(document.body).on('click', 'buttontrash', function () { // <-- changes
    alert("aa");
   /$(this).closest('tr').remove();
    return false;
});

This works perfectly, take not of document.body

AngularJS does not send hidden field value

I've found a nice solution written by Mike on sapiensworks. It is as simple as using a directive that watches for changes on your model:

.directive('ngUpdateHidden',function() {
    return function(scope, el, attr) {
        var model = attr['ngModel'];
        scope.$watch(model, function(nv) {
            el.val(nv);
        });
    };
})

and then bind your input:

<input type="hidden" name="item.Name" ng-model="item.Name" ng-update-hidden />

But the solution provided by tymeJV could be better as input hidden doesn't fire change event in javascript as yycorman told on this post, so when changing the value through a jQuery plugin will still work.

Edit I've changed the directive to apply the a new value back to the model when change event is triggered, so it will work as an input text.

.directive('ngUpdateHidden', function () {
    return {
        restrict: 'AE', //attribute or element
        scope: {},
        replace: true,
        require: 'ngModel',
        link: function ($scope, elem, attr, ngModel) {
            $scope.$watch(ngModel, function (nv) {
                elem.val(nv);
            });
            elem.change(function () { //bind the change event to hidden input
                $scope.$apply(function () {
                    ngModel.$setViewValue(  elem.val());
                });
            });
        }
    };
})

so when you trigger $("#yourInputHidden").trigger('change') event with jQuery, it will update the binded model as well.

Angularjs -> ng-click and ng-show to show a div

remove class hideByDefault. Div will remain hidden itself till value of myvalue is false.

How to create many labels and textboxes dynamically depending on the value of an integer variable?

I would create a user control which holds a Label and a Text Box in it and simply create instances of that user control 'n' times. If you want to know a better way to do it and use properties to get access to the values of Label and Text Box from the user control, please let me know.

Simple way to do it would be:

int n = 4; // Or whatever value - n has to be global so that the event handler can access it

private void btnDisplay_Click(object sender, EventArgs e)
{
    TextBox[] textBoxes = new TextBox[n];
    Label[] labels = new Label[n];

    for (int i = 0; i < n; i++)
    {
        textBoxes[i] = new TextBox();
        // Here you can modify the value of the textbox which is at textBoxes[i]

        labels[i] = new Label();
        // Here you can modify the value of the label which is at labels[i]
    }

    // This adds the controls to the form (you will need to specify thier co-ordinates etc. first)
    for (int i = 0; i < n; i++)
    {
        this.Controls.Add(textBoxes[i]);
        this.Controls.Add(labels[i]);
    }
}

The code above assumes that you have a button btnDisplay and it has a onClick event assigned to btnDisplay_Click event handler. You also need to know the value of n and need a way of figuring out where to place all controls. Controls should have a width and height specified as well.

To do it using a User Control simply do this.

Okay, first of all go and create a new user control and put a text box and label in it.

Lets say they are called txtSomeTextBox and lblSomeLabel. In the code behind add this code:

public string GetTextBoxValue() 
{ 
    return this.txtSomeTextBox.Text; 
} 

public string GetLabelValue() 
{ 
    return this.lblSomeLabel.Text; 
} 

public void SetTextBoxValue(string newText) 
{ 
    this.txtSomeTextBox.Text = newText; 
} 

public void SetLabelValue(string newText) 
{ 
    this.lblSomeLabel.Text = newText; 
}

Now the code to generate the user control will look like this (MyUserControl is the name you have give to your user control):

private void btnDisplay_Click(object sender, EventArgs e)
{
    MyUserControl[] controls = new MyUserControl[n];

    for (int i = 0; i < n; i++)
    {
        controls[i] = new MyUserControl();

        controls[i].setTextBoxValue("some value to display in text");
        controls[i].setLabelValue("some value to display in label");
        // Now if you write controls[i].getTextBoxValue() it will return "some value to display in text" and controls[i].getLabelValue() will return "some value to display in label". These value will also be displayed in the user control.
    }

    // This adds the controls to the form (you will need to specify thier co-ordinates etc. first)
    for (int i = 0; i < n; i++)
    {
        this.Controls.Add(controls[i]);
    }
}

Of course you can create more methods in the usercontrol to access properties and set them. Or simply if you have to access a lot, just put in these two variables and you can access the textbox and label directly:

public TextBox myTextBox;
public Label myLabel;

In the constructor of the user control do this:

myTextBox = this.txtSomeTextBox;
myLabel = this.lblSomeLabel;

Then in your program if you want to modify the text value of either just do this.

control[i].myTextBox.Text = "some random text"; // Same applies to myLabel

Hope it helped :)

Convert timestamp to string

new Date().toString();

http://www.mkyong.com/java/java-how-to-get-current-date-time-date-and-calender/

Dateformatter can make it to any string you want

What are database normal forms and can you give examples?

I've never had a good memory for exact wording, but in my database class I think the professor always said something like:

The data depends on the key [1NF], the whole key [2NF] and nothing but the key [3NF].

bootstrap 3 wrap text content within div for horizontal alignment

1) Maybe oveflow: hidden; will do the trick?

2) You need to set the size of each div with the text and button so that each of these divs have the same height. Then for your button:

button {
  position: absolute;
  bottom: 0;
}

Advantages of std::for_each over for loop

Personally, any time I'd need to go out of my way to use std::for_each (write special-purpose functors / complicated boost::lambdas), I find BOOST_FOREACH and C++0x's range-based for clearer:

BOOST_FOREACH(Monster* m, monsters) {
     if (m->has_plan()) 
         m->act();
}

std::for_each(monsters.begin(), monsters.end(), 
  if_then(bind(&Monster::has_plan, _1), 
    bind(&Monster::act, _1)));

Difference between the Apache HTTP Server and Apache Tomcat?

Apache is a general-purpose http server, which supports a number of advanced options that Tomcat doesn't.
Although Tomcat can be used as a general purpose http server, you can also set up Apache and Tomcat to work together with Apache serving static content and forwarding the requests for dynamic content to Tomcat.

Add new item in existing array in c#.net

Using a list would be your best option for memory management.

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysql.sock' (2)

recently i have faced with this error in my mysql ERROR 2002 (HY000):

Can't connect to local MySQL server through socket

'/var/lib/mysql/mysql.sock' (111)

because i forget to start my mariadb. just type this command on ur terminal.

systemctl start mariadb.service

mysql select from n last rows

Might be a very late answer, but this is good and simple.

select * from table_name order by id desc limit 5

This query will return a set of last 5 values(last 5 rows) you 've inserted in your table

Using JavaMail with TLS

Good post, the line

props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");

is mandatory if the SMTP server uses SSL Authentication, like the GMail SMTP server does. However if the server uses Plaintext Authentication over TLS, it should not be present, because Java Mail will complain about the initial connection being plaintext.

Also make sure you are using the latest version of Java Mail. Recently I used some old Java Mail jars from a previous project and could not make the code work, because the login process was failing. After I have upgraded to the latest version of Java Mail, the reason of the error became clear: it was a javax.net.ssl.SSLHandshakeException, which was not thrown up in the old version of the lib.

ORA-00979 not a group by expression

Too bad Oracle has limitations like these. Sure, the result for a column not in the GROUP BY would be random, but sometimes you want that. Silly Oracle, you can do this in MySQL/MSSQL.

BUT there is a work around for Oracle:

While the following line does not work

SELECT unique_id_col, COUNT(1) AS cnt FROM yourTable GROUP BY col_A;

You can trick Oracle with some 0's like the following, to keep your column in scope, but not group by it (assuming these are numbers, otherwise use CONCAT)

SELECT MAX(unique_id_col) AS unique_id_col, COUNT(1) AS cnt 
FROM yourTable GROUP BY col_A, (unique_id_col*0 + col_A);

How does "make" app know default target to build if no target is specified?

To save others a few seconds, and to save them from having to read the manual, here's the short answer. Add this to the top of your make file:

.DEFAULT_GOAL := mytarget

mytarget will now be the target that is run if "make" is executed and no target is specified.

If you have an older version of make (<= 3.80), this won't work. If this is the case, then you can do what anon mentions, simply add this to the top of your make file:

.PHONY: default
default: mytarget ;

References: https://www.gnu.org/software/make/manual/html_node/How-Make-Works.html

Common xlabel/ylabel for matplotlib subplots

New in Matplotlib v3.4 (not available in pip yet, clone from source)

supxlabel, supylabel

See example:

import matplotlib.pyplot as plt

for tl, cl in zip([True, False, False], [False, False, True]):
    fig = plt.figure(constrained_layout=cl, tight_layout=tl)

    gs = fig.add_gridspec(2, 3)

    ax = dict()

    ax['A'] = fig.add_subplot(gs[0, 0:2])
    ax['B'] = fig.add_subplot(gs[1, 0:2])
    ax['C'] = fig.add_subplot(gs[:, 2])

    ax['C'].set_xlabel('Booger')
    ax['B'].set_xlabel('Booger')
    ax['A'].set_ylabel('Booger Y')
    fig.suptitle(f'TEST: tight_layout={tl} constrained_layout={cl}')
    fig.supxlabel('XLAgg')
    fig.supylabel('YLAgg')
    
    plt.show()

What is the use of static synchronized method in java?

Suppose there are multiple static synchronized methods (m1, m2, m3, m4) in a class, and suppose one thread is accessing m1, then no other thread at the same time can access any other static synchronized methods.

How to get difference between two dates in Year/Month/Week/Day?

TimeSpan period = endDate.AddDays(1) - startDate;
DateTime date = new DateTime(period.Ticks);
int totalYears = date.Year - 1;
int totalMonths = ((date.Year - 1) * 12) + date.Month - 1;
int totalWeeks = (int)period.TotalDays / 7;

date.Year - 1 because the year 0 doesn't exist. date.Month - 1, the month 0 doesn't exist

Proper way to catch exception from JSON.parse

I am fairly new to Javascript. But this is what I understood: JSON.parse() returns SyntaxError exceptions when invalid JSON is provided as its first parameter. So. It would be better to catch that exception as such like as follows:

try {
    let sData = `
        {
            "id": "1",
            "name": "UbuntuGod",
        }
    `;
    console.log(JSON.parse(sData));
} catch (objError) {
    if (objError instanceof SyntaxError) {
        console.error(objError.name);
    } else {
        console.error(objError.message);
    }
}

The reason why I made the words "first parameter" bold is that JSON.parse() takes a reviver function as its second parameter.

Text file in VBA: Open/Find Replace/SaveAs/Close File

Guess I'm too late...

Came across the same problem today; here is my solution using FileSystemObject:

Dim objFSO
Const ForReading = 1
Const ForWriting = 2
Dim objTS 'define a TextStream object
Dim strContents As String
Dim fileSpec As String

fileSpec = "C:\Temp\test.txt"
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objTS = objFSO.OpenTextFile(fileSpec, ForReading)
strContents = objTS.ReadAll
strContents = Replace(strContents, "XXXXX", "YYYY")
objTS.Close

Set objTS = objFSO.OpenTextFile(fileSpec, ForWriting)
objTS.Write strContents
objTS.Close

What is the iOS 6 user agent string?

Some more:

Mozilla/5.0 (iPhone; CPU iPhone OS 6_1_3 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10B329 Safari/8536.25

Mozilla/5.0 (iPhone; CPU iPhone OS 6_1_4 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10B350 Safari/8536.25

php convert datetime to UTC

If you don't mind using PHP's DateTime class, which has been available since PHP 5.2.0, then there are several scenarios that might fit your situation:

If you have a $givenDt DateTime object that you want to convert to UTC then this will convert it to UTC:
```
$givenDt->setTimezone(new DateTimeZone('UTC'));
```
If you need the original $givenDt later, you might alternatively want to clone the given DateTime object before conversion of the cloned object:
```
$utcDt = clone $givenDt;
$utcDt->setTimezone(new DateTimeZone('UTC'));
```
If you only have a datetime string, e.g. $givenStr = '2018-12-17 10:47:12', then you first create a datetime object, and then convert it. Note this assumes that $givenStr is in PHP's configured timezone.
```
$utcDt = (new DateTime($givenStr))->setTimezone(new DateTimeZone('UTC'));
```
If the given datetime string is in some timezone different from the one in your PHP configuration, then create the datetime object by supplying the correct timezone (see the list of timezones PHP supports). In this example we assume the local timezone in Amsterdam:
```
$givenDt = new DateTime($givenStr, new DateTimeZone('Europe/Amsterdam'));
$givenDt->setTimezone(new DateTimeZone('UTC'));
```

Sending and Parsing JSON Objects in Android

Although there are already excellent answers are provided by users such as encouraging use of GSON etc. I would like to suggest use of org.json. It includes most of GSON functionalities. It also allows you to pass json string as an argument to it's JSONObject and it will take care of rest e.g:

JSONObject json = new JSONObject("some random json string");

This functionality make it my personal favorite.

angular 2 sort and filter

This is my sort. It will do number sort , string sort and date sort .

import { Pipe , PipeTransform  } from "@angular/core";

@Pipe({
  name: 'sortPipe'
 })

export class SortPipe implements PipeTransform {

    transform(array: Array<string>, key: string): Array<string> {

        console.log("Entered in pipe*******  "+ key);


        if(key === undefined || key == '' ){
            return array;
        }

        var arr = key.split("-");
        var keyString = arr[0];   // string or column name to sort(name or age or date)
        var sortOrder = arr[1];   // asc or desc order
        var byVal = 1;


        array.sort((a: any, b: any) => {

            if(keyString === 'date' ){

                let left    = Number(new Date(a[keyString]));
                let right   = Number(new Date(b[keyString]));

                return (sortOrder === "asc") ? right - left : left - right;
            }
            else if(keyString === 'name'){

                if(a[keyString] < b[keyString]) {
                    return (sortOrder === "asc" ) ? -1*byVal : 1*byVal;
                } else if (a[keyString] > b[keyString]) {
                    return (sortOrder === "asc" ) ? 1*byVal : -1*byVal;
                } else {
                    return 0;
                }  
            }
            else if(keyString === 'age'){
                return (sortOrder === "asc") ? a[keyString] - b[keyString] : b[keyString] - a[keyString];
            }

        });

        return array;

  }

}

linux/videodev.h : no such file or directory - OpenCV on ubuntu 11.04

v4l support has been dropped in recent kernel versions (including the one shipped with Ubuntu 11.04).

EDIT: Your question is connected to a recent message that was sent to the OpenCV users group, which has instructions to compile OpenCV 2.2 in Ubuntu 11.04. Your approach is not ideal.

What is "entropy and information gain"?

I can't give you graphics, but maybe I can give a clear explanation.

Suppose we have an information channel, such as a light that flashes once every day either red or green. How much information does it convey? The first guess might be one bit per day. But what if we add blue, so that the sender has three options? We would like to have a measure of information that can handle things other than powers of two, but still be additive (the way that multiplying the number of possible messages by two adds one bit). We could do this by taking log₂(number of possible messages), but it turns out there's a more general way.

Suppose we're back to red/green, but the red bulb has burned out (this is common knowledge) so that the lamp must always flash green. The channel is now useless, we know what the next flash will be so the flashes convey no information, no news. Now we repair the bulb but impose a rule that the red bulb may not flash twice in a row. When the lamp flashes red, we know what the next flash will be. If you try to send a bit stream by this channel, you'll find that you must encode it with more flashes than you have bits (50% more, in fact). And if you want to describe a sequence of flashes, you can do so with fewer bits. The same applies if each flash is independent (context-free), but green flashes are more common than red: the more skewed the probability the fewer bits you need to describe the sequence, and the less information it contains, all the way to the all-green, bulb-burnt-out limit.

It turns out there's a way to measure the amount of information in a signal, based on the the probabilities of the different symbols. If the probability of receiving symbol x_i is p_i, then consider the quantity

-log p_i

The smaller p_i, the larger this value. If x_i becomes twice as unlikely, this value increases by a fixed amount (log(2)). This should remind you of adding one bit to a message.

If we don't know what the symbol will be (but we know the probabilities) then we can calculate the average of this value, how much we will get, by summing over the different possibilities:

I = -Σ p_i log(p_i)

This is the information content in one flash.

Red bulb burnt out: p_red = 0, p_green=1, I = -(0 + 0)  = 0
Red and green equiprobable: p_red = 1/2, p_{green = 1/2}, I = -(2 * 1/2 * log(1/2)) = log(2)
Three colors, equiprobable: p_i=1/3, I = -(3 * 1/3 * log(1/3)) = log(3)
Green and red, green twice as likely: p_red=1/3, p_green=2/3, I = -(1/3 log(1/3) + 2/3 log(2/3)) = log(3) - 2/3 log(2)

This is the information content, or entropy, of the message. It is maximal when the different symbols are equiprobable. If you're a physicist you use the natural log, if you're a computer scientist you use log₂ and get bits.

Is there an equivalent of lsusb for OS X

At least on 10.10.5, system_profiler SPUSBDataType output is NOT dynamically updated when a new USB device gets plugged in, while ioreg -p IOUSB -l -w 0 does.

How to get start and end of day in Javascript?

If you're just interested in timestamps in GMT you can also do this, which can be conveniently adapted for different intervals (hour: 1000 * 60 * 60, 12 hours: 1000 * 60 * 60 * 12, etc.)

const interval = 1000 * 60 * 60 * 24; // 24 hours in milliseconds

let startOfDay = Math.floor(Date.now() / interval) * interval;
let endOfDay = startOfDay + interval - 1; // 23:59:59:9999

proto VS. prototype in JavaScript

_x000D_

(function(){ _x000D_
      let a = function(){console.log(this.b)};_x000D_
      a.prototype.b = 1;_x000D_
      a.__proto__.b = 2;_x000D_
      let q = new a();_x000D_
      console.log(a.b);_x000D_
      console.log(q.b) _x000D_
    })()

_x000D_

Try this code to understand

Gradle failed to resolve library in Android Studio

Solved by using "http://jcenter.bintray.com/" instead of "https://jcenter.bintray.com/".

repositories {
    jcenter( { url "http://jcenter.bintray.com/" } )
}

How can I get a list of repositories 'apt-get' is checking?

It seems the closest is:

apt-cache policy

Extract substring using regexp in plain bash

Using pure bash :

$ cat file.txt
US/Central - 10:26 PM (CST)
$ while read a b time x; do [[ $b == - ]] && echo $time; done < file.txt

another solution with bash regex :

$ [[ "US/Central - 10:26 PM (CST)" =~ -[[:space:]]*([0-9]{2}:[0-9]{2}) ]] &&
    echo ${BASH_REMATCH[1]}

another solution using grep and look-around advanced regex :

$ echo "US/Central - 10:26 PM (CST)" | grep -oP "\-\s+\K\d{2}:\d{2}"

another solution using sed :

$ echo "US/Central - 10:26 PM (CST)" |
    sed 's/.*\- *\([0-9]\{2\}:[0-9]\{2\}\).*/\1/'

another solution using perl :

$ echo "US/Central - 10:26 PM (CST)" |
    perl -lne 'print $& if /\-\s+\K\d{2}:\d{2}/'

and last one using awk :

$ echo "US/Central - 10:26 PM (CST)" |
    awk '{for (i=0; i<=NF; i++){if ($i == "-"){print $(i+1);exit}}}'

ValueError: max() arg is an empty sequence

I realized that I was iterating over a list of lists where some of them were empty. I fixed this by adding this preprocessing step:

tfidfLsNew = [x for x in tfidfLs if x != []]

the len() of the original was 3105, and the len() of the latter was 3101, implying that four of my lists were completely empty. After this preprocess my max() min() etc. were functioning again.

How to find my php-fpm.sock?

I faced this same issue on CentOS 7 years later

Posting hoping that it may help others...

Steps:

FIRST, configure the php-fpm settings:

-> systemctl stop php-fpm.service

-> cd /etc/php-fpm.d

-> ls -hal (should see a www.conf file)

-> cp www.conf www.conf.backup (back file up just in case)

-> vi www.conf

-> :/listen = (to get to the line we need to change)

-> i (to enter VI's text insertion mode)

-> change from listen = 127.0.0.1:9000 TO listen = /var/run/php-fpm/php-fpm.sock

-> Esc then :/listen.owner (to find it) then i (to change)

-> UNCOMMENT the listen.owner = nobody AND listen.group = nobody lines

-> Hit Esc then type :/user = then i

-> change user = apache TO user = nginx

-> AND change group = apache TO group = nginx

-> Hit Esc then :wq (to save and quit)

-> systemctl start php-fpm.service (now you will have a php-fpm.sock file)

SECOND, you configure your server {} block in your /etc/nginx/nginx.conf file. Then run:systemctl restart nginx.service

FINALLY, create a new .php file in your /usr/share/nginx/html directory for your Nginx server to serve up via the internet browser as a test.

-> vi /usr/share/nginx/html/mytest.php

-> type o

-> <?php echo date("Y/m/d-l"); ?> (PHP page will print date and day in browser)

-> Hit Esc

-> type :wq (to save and quite VI editor)

-> open up a browser and go to: http://yourDomainOrIPAddress/mytest.php (you should see the date and day printed)

how to remove key+value from hash in javascript

Why do you use new Array(); for hash? You need to use new Object() instead.

And i think you will get what you want.

how to calculate binary search complexity

Here is the solution using the master theorem, with readable LaTeX.

For each recurrence in the recurrence relation for binary search, we convert the problem into one subproblem, with runtime T(N/2). Therefore:

Substituting into the master theorem, we get:

Now, because is 0 and f(n) is 1, we can use the second case of the master theorem because:

This means that:

DROP IF EXISTS VS DROP?

It is not what is asked directly. But looking for how to do drop tables properly, I stumbled over this question, as I guess many others do too.

From SQL Server 2016+ you can use

DROP TABLE IF EXISTS dbo.Table

For SQL Server <2016 what I do is the following for a permanent table

IF OBJECT_ID('dbo.Table', 'U') IS NOT NULL 
  DROP TABLE dbo.Table;

Or this, for a temporary table

IF OBJECT_ID('tempdb.dbo.#T', 'U') IS NOT NULL
  DROP TABLE #T;

Set value of textbox using JQuery

$(document).ready(function() {
 $('#main_search').val('hi');
});

How to get the current taxonomy term ID (not the slug) in WordPress?

See wp_get_post_terms(), you'd do something like so:

global $post;
$terms = wp_get_post_terms( $post->ID, 'YOUR_TAXONOMY_NAME',array('fields' => 'ids') );

print_r($terms);

What is the difference between i++ and ++i?

If you have:

int i = 10;
int x = ++i;

then x will be 11.

But if you have:

int i = 10;
int x = i++;

then x will be 10.

Note as Eric points out, the increment occurs at the same time in both cases, but it's what value is given as the result that differs (thanks Eric!).

Generally, I like to use ++i unless there's a good reason not to. For example, when writing a loop, I like to use:

for (int i = 0; i < 10; ++i) {
}

Or, if I just need to increment a variable, I like to use:

++x;

Normally, one way or the other doesn't have much significance and comes down to coding style, but if you are using the operators inside other assignments (like in my original examples), it's important to be aware of potential side effects.

Make multiple-select to adjust its height to fit options without scroll bar

I guess you can use the size attribute. It works in all recent browsers.

<select name="courses" multiple="multiple" size="30" style="height: 100%;">

Execute script after specific delay using JavaScript

I really liked Maurius' explanation (highest upvoted response) with the three different methods for calling setTimeout.

In my code I want to automatically auto-navigate to the previous page upon completion of an AJAX save event. The completion of the save event has a slight animation in the CSS indicating the save was successful.

In my code I found a difference between the first two examples:

setTimeout(window.history.back(), 3000);

This one does not wait for the timeout--the back() is called almost immediately no matter what number I put in for the delay.

However, changing this to:

setTimeout(function() {window.history.back()}, 3000);

This does exactly what I was hoping.

This is not specific to the back() operation, the same happens with alert(). Basically with the alert() used in the first case, the delay time is ignored. When I dismiss the popup the animation for the CSS continues.

Thus, I would recommend the second or third method he describes even if you are using built in functions and not using arguments.

Changing image sizes proportionally using CSS?

this is a known problem with CSS resizing, unless all images have the same proportion, you have no way to do this via CSS.

The best approach would be to have a container, and resize one of the dimensions (always the same) of the images. In my example I resized the width.

If the container has a specified dimension (in my example the width), when telling the image to have the width at 100%, it will make it the full width of the container. The auto at the height will make the image have the height proportional to the new width.

Ex:

HTML:

<div class="container">
<img src="something.png" />
</div>

<div class="container">
<img src="something2.png" />
</div>

CSS:

.container {
    width: 200px;
    height: 120px;
}

/* resize images */
.container img {
    width: 100%;
    height: auto;
}

Android global variable

This global variable works for my project:

public class Global {
    public static int ivar1, ivar2;
    public static String svar1, svar2;
    public static int[] myarray1 = new int[10];
}


//  How to use other or many activity
Global.ivar1 = 10;

int i = Global.ivar1;

How to Delete a directory from Hadoop cluster which is having comma(,) in its name?

Here you can find all hadoop shell commands:

deleting: rmr Usage: hadoop fs -rmr URI [URI …]

Recursive version of delete.

Example:

hadoop fs -rmr /user/hadoop/dir
hadoop fs -rmr hdfs://nn.example.com/user/hadoop/dir

Exit Code:

Returns 0 on success and -1 on error.

Chrome desktop notification example

See also ServiceWorkerRegistration.showNotification

It appears that window.webkitNotifications has already been deprecated and removed. However, there's a new API, and it appears to work in the latest version of Firefox as well.

function notifyMe() {
  // Let's check if the browser supports notifications
  if (!("Notification" in window)) {
    alert("This browser does not support desktop notification");
  }

  // Let's check if the user is okay to get some notification
  else if (Notification.permission === "granted") {
    // If it's okay let's create a notification
    var notification = new Notification("Hi there!");
  }

  // Otherwise, we need to ask the user for permission
  // Note, Chrome does not implement the permission static property
  // So we have to check for NOT 'denied' instead of 'default'
  else if (Notification.permission !== 'denied') {
    Notification.requestPermission(function (permission) {

      // Whatever the user answers, we make sure we store the information
      if(!('permission' in Notification)) {
        Notification.permission = permission;
      }

      // If the user is okay, let's create a notification
      if (permission === "granted") {
        var notification = new Notification("Hi there!");
      }
    });
  } else {
    alert(`Permission is ${Notification.permission}`);
  }
}

codepen

Better way to find last used row

This gives you last used row in a specified column.

Optionally you can specify worksheet, else it will takes active sheet.

Function shtRowCount(colm As Integer, Optional ws As Worksheet) As Long

    If ws Is Nothing Then Set ws = ActiveSheet

    If ws.Cells(Rows.Count, colm) <> "" Then
        shtRowCount = ws.Cells(Rows.Count, colm).Row
        Exit Function
    End If

    shtRowCount = ws.Cells(Rows.Count, colm).Row

    If shtRowCount = 1 Then
        If ws.Cells(1, colm) = "" Then
            shtRowCount = 0
        Else
            shtRowCount = 1
        End If
    End If

End Function

Sub test()

    Dim lgLastRow As Long
    lgLastRow = shtRowCount(2) 'Column B

End Sub

Difference between DOM parentNode and parentElement

Just like with nextSibling and nextElementSibling, just remember that, properties with "element" in their name always returns Element or null. Properties without can return any other kind of node.

console.log(document.body.parentNode, "is body's parent node");    // returns <html>
console.log(document.body.parentElement, "is body's parent element"); // returns <html>

var html = document.body.parentElement;
console.log(html.parentNode, "is html's parent node"); // returns document
console.log(html.parentElement, "is html's parent element"); // returns null

"Unmappable character for encoding UTF-8" error

In eclipse try to go to file properties (Alt+Enter) and change the Resource → 'Text File encoding' → Other to UTF-8. Reopen the file and check there will be junk character somewhere in the string/file. Remove it. Save the file.

Change the encoding Resource → 'Text File encoding' back to Default.

Compile and deploy the code.

Free easy way to draw graphs and charts in C++?

I've used this "portable plotter". It's very small, multiplatform, easy to use and you can plug it into different graphical libraries. pplot

(Only for the plots part)

If you use or plan to use Qt, another multiplatform solution is Qwt and Qchart

How to set custom header in Volley Request

Here is setting headers from github sample:

StringRequest myReq = new StringRequest(Method.POST,
                       "http://ave.bolyartech.com/params.php",
                        createMyReqSuccessListener(),
                        createMyReqErrorListener()) {

 protected Map<String, String> getParams() throws 
         com.android.volley.AuthFailureError {
                        Map<String, String> params = new HashMap<String, String>();
                        params.put("param1", num1);
                        params.put("param2", num2);
                        return params;
                    };
                };
                queue.add(myReq);

How to access a DOM element in React? What is the equilvalent of document.getElementById() in React

You can replace

document.getElementById(this.state.baction).addPrecent(10);

with

this.refs[this.state.baction].addPrecent(10);


  <Progressbar completed={25} ref="Progress1" id="Progress1"/>

Run a controller function whenever a view is opened/shown

I faced at the same problem, and here i leave the reason of this behavior for everyone else with the same issue.

View LifeCycle

In order to improve performance, we've improved Ionic's ability to cache view elements and scope data. Once a controller is initialized, it may persist throughout the app’s life; it’s just hidden and removed from the watch cycle. Since we aren’t rebuilding scope, we’ve added events for which we should listen when entering the watch cycle again.

To see full description and $ionicView events go to: http://ionicframework.com/blog/navigating-the-changes/

Error Code: 1406. Data too long for column - MySQL

I think that switching off the STRICT mode is not a good option because the app can start losing the data entered by users.

If you receive values for the TESTcol from an app you could add model validation, like in Rails

validates :TESTcol, length: { maximum: 45 }

If you manipulate with values in SQL script you could truncate the string with the SUBSTRING command

INSERT INTO TEST
VALUES
(
    1,
    SUBSTRING('Vikas Kumar Gupta Kratika Shukla Kritika Shukla', 0, 45)
);

Android and Facebook share intent

I found out you can only share either Text or Image, not both using Intents. Below code shares only Image if exists, or only Text if Image does not exits. If you want to share both, you need to use Facebook SDK from here.

If you use other solution instead of below code, don't forget to specify package name com.facebook.lite as well, which is package name of Facebook Lite. I haven't test but com.facebook.orca is package name of Facebook Messenger if you want to target that too.

You can add more methods for sharing with WhatsApp, Twitter ...

public class IntentShareHelper {

    /**
     * <b>Beware,</b> this shares only image if exists, or only text if image does not exits. Can't share both
     */
    public static void shareOnFacebook(AppCompatActivity appCompatActivity, String textBody, Uri fileUri) {
        Intent intent = new Intent(Intent.ACTION_SEND);
        intent.setType("text/plain");
        intent.putExtra(Intent.EXTRA_TEXT,!TextUtils.isEmpty(textBody) ? textBody : "");

        if (fileUri != null) {
            intent.putExtra(Intent.EXTRA_STREAM, fileUri);
            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
            intent.setType("image/*");
        }

        boolean facebookAppFound = false;
        List<ResolveInfo> matches = appCompatActivity.getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
        for (ResolveInfo info : matches) {
            if (info.activityInfo.packageName.toLowerCase().startsWith("com.facebook.katana") ||
                info.activityInfo.packageName.toLowerCase().startsWith("com.facebook.lite")) {
                intent.setPackage(info.activityInfo.packageName);
                facebookAppFound = true;
                break;
            }
        }

        if (facebookAppFound) {
            appCompatActivity.startActivity(intent);
        } else {
            showWarningDialog(appCompatActivity, appCompatActivity.getString(R.string.error_activity_not_found));
        }
    }

    public static void shareOnWhatsapp(AppCompatActivity appCompatActivity, String textBody, Uri fileUri){...}

    private static void showWarningDialog(Context context, String message) {
        new AlertDialog.Builder(context)
                .setMessage(message)
                .setNegativeButton(context.getString(R.string.close), new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                })
                .setCancelable(true)
                .create().show();
    }
}

For getting Uri from File, use below class:

public class UtilityFile {
    public static @Nullable Uri getUriFromFile(Context context, @Nullable File file) {
        if (file == null)
            return null;

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            try {
                return FileProvider.getUriForFile(context, "com.my.package.fileprovider", file);
            } catch (Exception e) {
                e.printStackTrace();
                return null;
            }
        } else {
            return Uri.fromFile(file);
        }
    }

    // Returns the URI path to the Bitmap displayed in specified ImageView       
    public static Uri getLocalBitmapUri(Context context, ImageView imageView) {
        Drawable drawable = imageView.getDrawable();
        Bitmap bmp = null;
        if (drawable instanceof BitmapDrawable) {
            bmp = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
        } else {
            return null;
        }
        // Store image to default external storage directory
        Uri bmpUri = null;
        try {
            // Use methods on Context to access package-specific directories on external storage.
            // This way, you don't need to request external read/write permission.
            File file = new File(context.getExternalFilesDir(Environment.DIRECTORY_PICTURES), "share_image_" + System.currentTimeMillis() + ".png");
            FileOutputStream out = new FileOutputStream(file);
            bmp.compress(Bitmap.CompressFormat.PNG, 90, out);
            out.close();

            bmpUri = getUriFromFile(context, file);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return bmpUri;
    }    
}

For writing FileProvider, use this link: https://github.com/codepath/android_guides/wiki/Sharing-Content-with-Intents

How to discard local changes and pull latest from GitHub repository

To push over old repo. git push -u origin master --force

I think the --force would work for a pull as well.

Get the first element of an array

No one has suggested using the ArrayIterator class:

$array = array( 4 => 'apple', 7 => 'orange', 13 => 'plum' );
$first_element = (new ArrayIterator($array))->current();
echo $first_element; //'apple'

gets around the by reference stipulation of the OP.

PHP - remove all non-numeric characters from a string

Use \D to match non-digit characters.

preg_replace('~\D~', '', $str);

Cross Browser Flash Detection in Javascript

I agree with Max Stewart. SWFObject is the way to go. I'd like to supplement his answer with a code example. This ought to to get you started:

Make sure you have included the swfobject.js file (get it here):

<script type="text/javascript" src="swfobject.js"></script>

Then use it like so:

if(swfobject.hasFlashPlayerVersion("9.0.115"))
{
    alert("You have the minimum required flash version (or newer)");
}
else
{
    alert("You do not have the minimum required flash version");
}

Replace "9.0.115" with whatever minimum flash version you need. I chose 9.0.115 as an example because that's the version that added h.264 support.

If the visitor does not have flash, it will report a flash version of "0.0.0", so if you just want to know if they have flash at all, use:

if(swfobject.hasFlashPlayerVersion("1"))
{
    alert("You have flash!");
}
else
{
    alert("You do not flash :-(");
}

Send file via cURL from form POST in PHP

It works for me when sending an attachment to Mercadolibre, through its messaging system.

The anwswer https://stackoverflow.com/a/35227055/7656744

$target_url = "http://server:port/xxxxx.php";           
$fname = 'file.txt';   
$cfile = new CURLFile(realpath($fname));

    $post = array (
              'file' => $cfile
              );    

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible;)");   
curl_setopt($ch, CURLOPT_HTTPHEADER,array('Content-Type: multipart/form-data'));
curl_setopt($ch, CURLOPT_FRESH_CONNECT, 1);   
curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);  
curl_setopt($ch, CURLOPT_TIMEOUT, 100);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);

$result = curl_exec ($ch);

if ($result === FALSE) {
    echo "Error sending" . $fname .  " " . curl_error($ch);
    curl_close ($ch);
}else{
    curl_close ($ch);
    echo  "Result: " . $result;
}

"Fade" borders in CSS

You could also use box-shadow property with higher value of blur and rgba() color to set opacity level. Sounds like a better choice in your case.

box-shadow: 0 30px 40px rgba(0,0,0,.1);

SSL Proxy/Charles and Android trouble

I figured the issue. Its because Charles 3.7 has some bugs for Android devices. I updated to Charles 3.8 Beta version and seems to working fine for me.

PHP how to get the base domain/url?

If you're using wordpress, use get_site_url:

get_site_url()

wget command to download a file and save as a different filename

Also notice the order of parameters on the command line. At least on some systems (e.g. CentOS 6):

wget -O FILE URL

works. But:

wget URL -O FILE

does not work.

How to undo 'git reset'?

My situation was slightly different, I did git reset HEAD~ three times.

To undo it I had to do

git reset HEAD@{3}

so you should be able to do

git reset HEAD@{N}

But if you have done git reset using

git reset HEAD~3

you will need to do

git reset HEAD@{1}

{N} represents the number of operations in reflog, as Mark pointed out in the comments.

Best way to define error codes/strings in Java?

I'd recommend that you take a look at java.util.ResourceBundle. You should care about I18N, but it's worth it even if you don't. Externalizing the messages is a very good idea. I've found that it was useful to be able to give a spreadsheet to business folks that allowed them to put in the exact language they wanted to see. We wrote an Ant task to generate the .properties files at compile time. It makes I18N trivial.

If you're also using Spring, so much the better. Their MessageSource class is useful for these sorts of things.

JMS Topic vs Queues

Queues

Pros

Simple messaging pattern with a transparent communication flow
Messages can be recovered by putting them back on the queue

Cons

Only one consumer can get the message
Implies a coupling between producer and consumer as it’s an one-to-one relation

Topics

Pros

Multiple consumers can get a message
Decoupling between producer and consumers (publish-and-subscribe pattern)

Cons

More complicated communication flow
A message cannot be recovered for a single listener

What is a MIME type?

I couldn't possibly explain it better than wikipedia does: http://en.wikipedia.org/wiki/MIME_type

In addition to e-mail applications, Web browsers also support various MIME types. This enables the browser to display or output files that are not in HTML format.

IOW, it helps the browser (or content consumer, because it may not just be a browser) determine what content they are about to consume; this means a browser may be able to make a decision on the correct plugin to use to display content, or a media player may be able to load up the correct codec or plugin.

nginx: send all requests to a single html page

Your original rewrite should almost work. I'm not sure why it would be redirecting, but I think what you really want is just

rewrite ^ /base.html break;

You should be able to put that in a location or directly in the server.

Getting data from Yahoo Finance

Example to recieve it through a request:

a) http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.historical

b) http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.quotes

Is generator.next() visible in Python 3?

Try:

next(g)

Check out this neat table that shows the differences in syntax between 2 and 3 when it comes to this.

How to configure multi-module Maven + Sonar + JaCoCo to give merged coverage report?

The configuration I use in my parent level pom where I have separate unit and integration test phases.

I configure the following properties in the parent POM Properties

    <maven.surefire.report.plugin>2.19.1</maven.surefire.report.plugin>
    <jacoco.plugin.version>0.7.6.201602180812</jacoco.plugin.version>
    <jacoco.check.lineRatio>0.52</jacoco.check.lineRatio>
    <jacoco.check.branchRatio>0.40</jacoco.check.branchRatio>
    <jacoco.check.complexityMax>15</jacoco.check.complexityMax>
    <jacoco.skip>false</jacoco.skip>
    <jacoco.excludePattern/>
    <jacoco.destfile>${project.basedir}/../target/coverage-reports/jacoco.exec</jacoco.destfile>

    <sonar.language>java</sonar.language>
    <sonar.exclusions>**/generated-sources/**/*</sonar.exclusions>
    <sonar.core.codeCoveragePlugin>jacoco</sonar.core.codeCoveragePlugin>
    <sonar.coverage.exclusions>${jacoco.excludePattern}</sonar.coverage.exclusions>
    <sonar.dynamicAnalysis>reuseReports</sonar.dynamicAnalysis>
    <sonar.jacoco.reportPath>${project.basedir}/../target/coverage-reports</sonar.jacoco.reportPath>

    <skip.surefire.tests>${skipTests}</skip.surefire.tests>
    <skip.failsafe.tests>${skipTests}</skip.failsafe.tests>

I place the plugin definitions under plugin management.

Note that I define a property for surefire (surefireArgLine) and failsafe (failsafeArgLine) arguments to allow jacoco to configure the javaagent to run with each test.

Under pluginManagement

  <build>
     <pluginManagment>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <fork>true</fork>
                    <meminitial>1024m</meminitial>
                    <maxmem>1024m</maxmem>
                    <compilerArgument>-g</compilerArgument>
                    <source>${maven.compiler.source}</source>
                    <target>${maven.compiler.target}</target>
                    <encoding>${project.build.sourceEncoding}</encoding>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.19.1</version>
                <configuration>
                    <forkCount>4</forkCount>
                    <reuseForks>false</reuseForks>
                    <argLine>-Xmx2048m ${surefireArgLine}</argLine>
                    <includes>
                        <include>**/*Test.java</include>
                    </includes>
                    <excludes>
                        <exclude>**/*IT.java</exclude>
                    </excludes>
                    <skip>${skip.surefire.tests}</skip>
                </configuration>
            </plugin>
            <plugin>
                <!-- For integration test separation -->
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-failsafe-plugin</artifactId>
                <version>2.19.1</version>
                <dependencies>
                    <dependency>
                        <groupId>org.apache.maven.surefire</groupId>
                        <artifactId>surefire-junit47</artifactId>
                        <version>2.19.1</version>
                    </dependency>
                </dependencies>
                <configuration>
                    <forkCount>4</forkCount>
                    <reuseForks>false</reuseForks>
                    <argLine>${failsafeArgLine}</argLine>
                    <includes>
                        <include>**/*IT.java</include>
                    </includes>
                    <skip>${skip.failsafe.tests}</skip>
                </configuration>
                <executions>
                    <execution>
                        <id>integration-test</id>
                        <goals>
                            <goal>integration-test</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>verify</id>
                        <goals>
                            <goal>verify</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

            <plugin>
                <!-- Code Coverage -->
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
                <version>${jacoco.plugin.version}</version>
                <configuration>
                    <haltOnFailure>true</haltOnFailure>
                    <excludes>
                        <exclude>**/*.mar</exclude>
                        <exclude>${jacoco.excludePattern}</exclude>
                    </excludes>
                    <rules>
                        <rule>
                            <element>BUNDLE</element>
                            <limits>
                                <limit>
                                    <counter>LINE</counter>
                                    <value>COVEREDRATIO</value>
                                    <minimum>${jacoco.check.lineRatio}</minimum>
                                </limit>
                                <limit>
                                    <counter>BRANCH</counter>
                                    <value>COVEREDRATIO</value>
                                    <minimum>${jacoco.check.branchRatio}</minimum>
                                </limit>
                            </limits>
                        </rule>
                        <rule>
                            <element>METHOD</element>
                            <limits>
                                <limit>
                                    <counter>COMPLEXITY</counter>
                                    <value>TOTALCOUNT</value>
                                    <maximum>${jacoco.check.complexityMax}</maximum>
                                </limit>
                            </limits>
                        </rule>
                    </rules>
                </configuration>
                <executions>
                    <execution>
                        <id>pre-unit-test</id>
                        <goals>
                            <goal>prepare-agent</goal>
                        </goals>
                        <configuration>
                            <destFile>${jacoco.destfile}</destFile>
                            <append>true</append>
                            <propertyName>surefireArgLine</propertyName>
                        </configuration>
                    </execution>
                    <execution>
                        <id>post-unit-test</id>
                        <phase>test</phase>
                        <goals>
                            <goal>report</goal>
                        </goals>
                        <configuration>
                            <dataFile>${jacoco.destfile}</dataFile>
                            <outputDirectory>${sonar.jacoco.reportPath}</outputDirectory>
                            <skip>${skip.surefire.tests}</skip>
                        </configuration>
                    </execution>
                    <execution>
                        <id>pre-integration-test</id>
                        <phase>pre-integration-test</phase>
                        <goals>
                            <goal>prepare-agent-integration</goal>
                        </goals>
                        <configuration>
                            <destFile>${jacoco.destfile}</destFile>
                            <append>true</append>
                            <propertyName>failsafeArgLine</propertyName>
                        </configuration>
                    </execution>
                    <execution>
                        <id>post-integration-test</id>
                        <phase>post-integration-test</phase>
                        <goals>
                            <goal>report-integration</goal>
                        </goals>
                        <configuration>
                            <dataFile>${jacoco.destfile}</dataFile>
                            <outputDirectory>${sonar.jacoco.reportPath}</outputDirectory>
                            <skip>${skip.failsafe.tests}</skip>
                        </configuration>
                    </execution>
                    <!-- Disabled until such time as code quality stops this tripping
                    <execution>
                        <id>default-check</id>
                        <goals>
                            <goal>check</goal>
                        </goals>
                        <configuration>
                            <dataFile>${jacoco.destfile}</dataFile>
                        </configuration>
                    </execution>
                    -->
                </executions>
            </plugin>
            ...

And in the build section

 <build>
     <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
        </plugin>

        <plugin>
            <!-- for unit test execution -->
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
        </plugin>
        <plugin>
            <!-- For integration test separation -->
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-failsafe-plugin</artifactId>
        </plugin>
        <plugin>
            <!-- For code coverage -->
            <groupId>org.jacoco</groupId>
            <artifactId>jacoco-maven-plugin</artifactId>
        </plugin>
        ....

And in the reporting section

    <reporting>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-report-plugin</artifactId>
            <version>${maven.surefire.report.plugin}</version>
            <configuration>
                <showSuccess>false</showSuccess>
                <alwaysGenerateFailsafeReport>true</alwaysGenerateFailsafeReport>
                <alwaysGenerateSurefireReport>true</alwaysGenerateSurefireReport>
                <aggregate>true</aggregate>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.jacoco</groupId>
            <artifactId>jacoco-maven-plugin</artifactId>
            <version>${jacoco.plugin.version}</version>
            <configuration>
                <excludes>
                    <exclude>**/*.mar</exclude>
                    <exclude>${jacoco.excludePattern}</exclude>
                </excludes>
            </configuration>
        </plugin>
     </plugins>
  </reporting>

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