How to choose the id generation strategy when using JPA and Hibernate

I find this lecture very valuable https://vimeo.com/190275665, in point 3 it summarizes these generators and also gives some performance analysis and guideline one when you use each one.

What is the best way to delete a value from an array in Perl?

Delete all occurrences of 'something' if array.

Based on SquareCog answer's:

my @arr = ('1','2','3','4','3','2', '3','4','3');
my @dix = grep { $arr[$_] eq '4' } 0..$#arr;
my $o = 0;
for (@dix) {
    splice(@arr, $_-$o, 1);
    $o++;
}
print join("\n", @arr);

Each time we remove index from @arr, the next correct index to delete will be $_-current_loop_step.

Receiving "Attempted import error:" in react app

I guess I am coming late, but this info might be useful to anyone I found out something, which might be simple but important. if you use export on a function directly i.e

export const addPost = (id) =>{
  ...
 }

Note while importing you need to wrap it in curly braces i.e. import {addPost} from '../URL';

But when using export default i.e

const addPost = (id) =>{
  ...
 }

export default addPost,

Then you can import without curly braces i.e. import addPost from '../url';

export default addPost

I hope this helps anyone who got confused as me.

Node / Express: EADDRINUSE, Address already in use - Kill server

Task Manager (ctrl+alt+del) ->

Processes tab ->

select the "node.exe" process and hit "End Process"

Accessing nested JavaScript objects and arrays by string path

Extension of Mohamad Hamouday' Answer will fill in missing keys

function Object_Manager(obj, Path, value, Action, strict) 
{
    try
    {
        if(Array.isArray(Path) == false)
        {
            Path = [Path];
        }

        let level = 0;
        var Return_Value;
        Path.reduce((a, b)=>{
            console.log(level,':',a, '|||',b)
            if (!strict){
              if (!(b in a)) a[b] = {}
            }


            level++;
            if (level === Path.length)
            {
                if(Action === 'Set')
                {
                    a[b] = value;
                    return value;
                }
                else if(Action === 'Get')
                {
                    Return_Value = a[b];
                }
                else if(Action === 'Unset')
                {
                    delete a[b];
                }
            } 
            else 
            {
                return a[b];
            }
        }, obj);
        return Return_Value;
    }

    catch(err)
    {
        console.error(err);
        return obj;
    }
}

Example


obja = {
  "a": {
    "b":"nom"
  }
}

// Set
path = "c.b" // Path does not exist
Object_Manager(obja,path.split('.'), 'test_new_val', 'Set', false);

// Expected Output: Object { a: Object { b: "nom" }, c: Object { b: "test_new_value" } }

window.location.reload with clear cache

You can do this a few ways. One, simply add this meta tag to your head:

<meta http-equiv="Cache-control" content="no-cache">

If you want to remove the document from cache, expires meta tag should work to delete it by setting its content attribute to -1 like so:

<meta http-equiv="Expires" content="-1">

http://www.metatags.org/meta_http_equiv_cache_control

Also, IE should give you the latest content for the main page. If you are having issues with external documents, like CSS and JS, add a dummy param at the end of your URLs with the current time in milliseconds so that it's never the same. This way IE, and other browsers, will always serve you the latest version. Here is an example:

<script src="mysite.com/js/myscript.js?12345">

UPDATE 1

After reading the comments I realize you wanted to programmatically erase the cache and not every time. What you could do is have a function in JS like:

eraseCache(){
  window.location = window.location.href+'?eraseCache=true';
}

Then, in PHP let's say, you do something like this:

<head>
<?php
    if (isset($_GET['eraseCache'])) {
        echo '<meta http-equiv="Cache-control" content="no-cache">';
        echo '<meta http-equiv="Expires" content="-1">';
        $cache = '?' . time();
    }
?>
<!-- ... other head HTML -->
<script src="mysite.com/js/script.js<?= $cache ?>"
</head>

This isn't tested, but should work. Basically, your JS function, if invoked, will reload the page, but adds a GET param to the end of the URL. Your site would then have some back-end code that looks for this param. If it exists, it adds the meta tags and a cache variable that contains a timestamp and appends it to the scripts and CSS that you are having caching issues with.

UPDATE 2

The meta tag indeed won't erase the cache on page load. So, technically you would need to run the eraseCache function in JS, once the page loads, you would need to load it again for the changes to take place. You should be able to fix this with your server side language. You could run the same eraseCache JS function, but instead of adding the meta tags, you need to add HTTP Cache headers:

<?php
    header("Cache-Control: no-cache, must-revalidate");
    header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
?>
<!-- Here you'd start your page... -->

This method works immediately without the need for page reload because it erases the cache before the page loads and also before anything is run.

Remove all elements contained in another array

If you are using an array of objects. Then the below code should do the magic, where an object property will be the criteria to remove duplicate items.

In the below example, duplicates have been removed comparing name of each item.

Try this example. http://jsfiddle.net/deepak7641/zLj133rh/

_x000D_

var myArray = [_x000D_
  {name: 'deepak', place: 'bangalore'}, _x000D_
  {name: 'chirag', place: 'bangalore'}, _x000D_
  {name: 'alok', place: 'berhampur'}, _x000D_
  {name: 'chandan', place: 'mumbai'}_x000D_
];_x000D_
var toRemove = [_x000D_
  {name: 'deepak', place: 'bangalore'},_x000D_
  {name: 'alok', place: 'berhampur'}_x000D_
];_x000D_
_x000D_
for( var i=myArray.length - 1; i>=0; i--){_x000D_
  for( var j=0; j<toRemove.length; j++){_x000D_
      if(myArray[i] && (myArray[i].name === toRemove[j].name)){_x000D_
      myArray.splice(i, 1);_x000D_
     }_x000D_
    }_x000D_
}_x000D_
_x000D_
alert(JSON.stringify(myArray));

_x000D_

phpmyadmin - count(): Parameter must be an array or an object that implements Countable

I think the best option is to update Phpmyadmin to a version which has this already fixed.

Until it is published as a deb, you could do it like in @crimson-501 answer which I will copy below:

Your first step is to install PMA (phpMyAdmin) from the official Ubuntu repo: apt-get install phpmyadmin.
Next, cd into usr/share directory: cd /usr/share.
Third, remove the phpmyadmin directory: rm -rf phpmyadmin.
Now we need to download the latest PMA version onto our system (Note that you need wget: apt-get install wget): wget -P /usr/share/ "https://files.phpmyadmin.net/phpMyAdmin/4.9.4/phpMyAdmin-4.9.4-english.zip" Let me explain the arguments of this command, -P defines the path and "the link.zip" is currently (7/17/18) the latest version of PMA. You can find those links HERE.
For this next step you need unzip (apt-get install unzip): unzip phpMyAdmin-4.9.4-english.zip. We just unzipped PMA, now we will move it to it's final home.
Lets use the cp (copy) command to move our files! Note that we have to add the -r argument since this is a folder. cp -r phpMyAdmin-4.9.4-english phpmyadmin.
Now it's time to clean up: rm -rf phpMyAdmin-4.9.4-english.

Keep Reading!

You might now notice two errors after you log into PMA.

the configuration file now needs a secret passphrase (blowfish_secret). phpmyadmin
The $cfg['TempDir'] (./tmp/) is not accessible. phpMyAdmin is not able to cache templates and will be slow because of this.

However, these issues are relatively easy to fix. For the first issue all you have to do is grab your editor of choice and edit /usr/share/phpmyadmin/config.inc.php but there's a problem, we removed it! That's ok, all you have to do is: cd /usr/share/phpmyadmin & cp config.sample.inc.php config.inc.php.

We will now add our Blowfish Secret! nano config.inc.php and copy the dynamically generated secret from near the bottom of this page: https://www.question-defense.com/tools/phpmyadmin-blowfish-secret-generator.

Example phpMyAdmin Blowfish Secret Variable Entry:

/*
 * This is needed for cookie based authentication to encrypt password in
 * cookie
 */
$cfg['blowfish_secret'] = '{^QP+-(3mlHy+Gd~FE3mN{gIATs^1lX+T=KVYv{ubK*U0V'; 
/* YOU MUST FILL IN THIS FOR COOKIE AUTH! */

Now save and close the file.

Now we will create a tmp directory for PMA: mkdir tmp & chown -R www-data:www-data /usr/share/phpmyadmin/tmp. The last command allows the Apache web server to own the tmp directory and edit it's contents.

What is the correct way to read from NetworkStream in .NET

As per your requirement, Thread.Sleep is perfectly fine to use because you are not sure when the data will be available so you might need to wait for the data to become available. I have slightly changed the logic of your function this might help you little further.

string SendCmd(string cmd, string ip, int port)
{
    var client = new TcpClient(ip, port);
    var data = Encoding.GetEncoding(1252).GetBytes(cmd);
    var stm = client.GetStream();
    stm.Write(data, 0, data.Length);
    byte[] resp = new byte[2048];
    var memStream = new MemoryStream();

    int bytes = 0;

    do
    {
        bytes = 0;
        while (!stm.DataAvailable)
            Thread.Sleep(20); // some delay
        bytes = stm.Read(resp, 0, resp.Length);
        memStream.Write(resp, 0, bytes);
    } 
    while (bytes > 0);

    return Encoding.GetEncoding(1252).GetString(memStream.ToArray());
}

Hope this helps!

Prevent wrapping of span or div

It works with just this:

.slideContainer {
    white-space: nowrap;
}
.slide { 
    display: inline-block;
    width: 600px;
    white-space: normal;
}

I did originally have float : left; and that prevented it from working correctly.

Thanks for posting this solution.

Display all items in array using jquery

Original from Sept. 13, 2015:
Quick and easy.

$.each(yourArray, function(index, value){
    $('.element').html( $('.element').html() + '<span>' + value +'</span>')
});

Update Sept 9, 2019: No jQuery is needed to iterate the array.

yourArray.forEach((value) => {
    $(".element").html(`${$(".element").html()}<span>${value}</span>`);
});

/* --- Or without jQuery at all --- */

yourArray.forEach((value) => {
    document.querySelector(".element").innerHTML += `<span>${value}</span>`;
});

Angular routerLink does not navigate to the corresponding component

Try changing the links as below:

  <ul class="nav navbar-nav item">
    <li>
        <a [routerLink]="['/home']" routerLinkActive="active">Home</a>
    </li>
    <li>
        <a [routerLink]="['/about']" routerLinkActive="active">About this</a>
    </li>
  </ul>

Also, add the following in the header of index.html:

<base href="/">

How to install Selenium WebDriver on Mac OS

First up you need to download Selenium jar files from http://www.seleniumhq.org/download/. Then you'd need an IDE, something like IntelliJ or Eclipse. Then you'll have to map your jar files to those IDEs. Then depending on which language/framework you choose, you'll have to download the relevant library files, for example, if you're using JUnit you'll have to download Junit 4.11 jar file. Finally don't forget to download the drivers for Chrome and Safari (firefox driver comes standard with selenium). Once done, you can start coding and testing your code with the browser of your choice.

Running JAR file on Windows 10

How do I run an executable JAR file? If you have a jar file called Example.jar, follow these rules:

Open a notepad.exe.
Write : java -jar Example.jar.
Save it with the extension .bat.
Copy it to the directory which has the .jar file.
Double click it to run your .jar file.

Add padding to HTML text input field

You can provide padding to an input like this:

HTML:

<input type=text id=firstname />

CSS:

input {
    width: 250px;
    padding: 5px;
}

however I would also add:

input {
    width: 250px;
    padding: 5px;
    -webkit-box-sizing: border-box; /* Safari/Chrome, other WebKit */
    -moz-box-sizing: border-box;    /* Firefox, other Gecko */
    box-sizing: border-box;         /* Opera/IE 8+ */
}

Box sizing makes the input width stay at 250px rather than increase to 260px due to the padding.

For reference.

How to add jQuery code into HTML Page

Before the closing body tag add this (reference to jQuery library). Other hosted libraries can be found here

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

And this

<script>
  //paste your code here
</script>

It should look something like this

<body>
 ........
 ........
 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
 <script> Your code </script>
</body>

Return row of Data Frame based on value in a column - R

You could use dplyr:

df %>% group_by("Amount") %>% slice(which.min(x))

Re-assign host access permission to MySQL user

For reference, the solution is:

UPDATE mysql.user SET host = '10.0.0.%' WHERE host = 'internalfoo' AND user != 'root';
UPDATE mysql.db SET host = '10.0.0.%' WHERE host = 'internalfoo' AND user != 'root';
FLUSH PRIVILEGES;

How do you create a toggle button?

You can use the "active" pseudoclass (it won't work on IE6, though, for elements other than links)

a:active
{
    ...desired style here...
}

Oracle's default date format is YYYY-MM-DD, WHY?

A DATE value per the SQL standard is YYYY-MM-DD. So even though Oracle stores the time information, my guess is that they're displaying the value in a way that is compatible with the SQL standard. In the standard, there is the TIMESTAMP data type that includes date and time info.

Git - What is the difference between push.default "matching" and "simple"

Git v2.0 Release Notes

Backward compatibility notes

When git push [$there] does not say what to push, we have used the traditional "matching" semantics so far (all your branches were sent to the remote as long as there already are branches of the same name over there). In Git 2.0, the default is now the "simple" semantics, which pushes:

only the current branch to the branch with the same name, and only when the current branch is set to integrate with that remote branch, if you are pushing to the same remote as you fetch from; or
only the current branch to the branch with the same name, if you are pushing to a remote that is not where you usually fetch from.

You can use the configuration variable "push.default" to change this. If you are an old-timer who wants to keep using the "matching" semantics, you can set the variable to "matching", for example. Read the documentation for other possibilities.

When git add -u and git add -A are run inside a subdirectory without specifying which paths to add on the command line, they operate on the entire tree for consistency with git commit -a and other commands (these commands used to operate only on the current subdirectory). Say git add -u . or git add -A . if you want to limit the operation to the current directory.

git add <path> is the same as git add -A <path> now, so that git add dir/ will notice paths you removed from the directory and record the removal. In older versions of Git, git add <path> used to ignore removals. You can say git add --ignore-removal <path> to add only added or modified paths in <path>, if you really want to.

Android: How to programmatically access the device serial number shown in the AVD manager (API Version 8)

From Android P, defining the READ_PHONE_STATE permission in AndroidManifest only, will not work. We have to actually request for the permission. Below code works for me:

@RequiresApi(api = Build.VERSION_CODES.P)
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_PHONE_STATE}, 101);
    }
}

@RequiresApi(api = Build.VERSION_CODES.O)
@Override
protected void onResume() {
    super.onResume();
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
        return;
    }
    Log.d(TAG,Build.getSerial());
}
@RequiresApi(api = Build.VERSION_CODES.O)
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    switch (requestCode) {
        case 101:
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
                return;
            }
        } else {
            //not granted
        }
        break;
        default:
            super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    }
}

Add this permissions in AndroidManifest.xml

<uses-permission android:name = "android.permission.INTERNET"/>
<uses-permission android:name = "android.permission.READ_PHONE_STATE" />

Hope this helps.

Thank You, MJ

printf formatting (%d versus %u)

%u is used for unsigned integer. Since the memory address given by the signed integer address operator %d is -12, to get this value in unsigned integer, Compiler returns the unsigned integer value for this address.

Add an incremental number in a field in INSERT INTO SELECT query in SQL Server

You can use the row_number() function for this.

INSERT INTO PM_Ingrediants_Arrangements_Temp(AdminID, ArrangementID, IngrediantID, Sequence)
    SELECT @AdminID, @ArrangementID, PM_Ingrediants.ID,
            row_number() over (order by (select NULL))
    FROM PM_Ingrediants 
    WHERE PM_Ingrediants.ID IN (SELECT ID FROM GetIDsTableFromIDsList(@IngrediantsIDs)
                             )

If you want to start with the maximum already in the table then do:

INSERT INTO PM_Ingrediants_Arrangements_Temp(AdminID, ArrangementID, IngrediantID, Sequence)
    SELECT @AdminID, @ArrangementID, PM_Ingrediants.ID,
           coalesce(const.maxs, 0) + row_number() over (order by (select NULL))
    FROM PM_Ingrediants cross join
         (select max(sequence) as maxs from PM_Ingrediants_Arrangement_Temp) const
    WHERE PM_Ingrediants.ID IN (SELECT ID FROM GetIDsTableFromIDsList(@IngrediantsIDs)
                             )

Finally, you can just make the sequence column an auto-incrementing identity column. This saves the need to increment it each time:

create table PM_Ingrediants_Arrangement_Temp ( . . .
    sequence int identity(1, 1) -- and might consider making this a primary key too
    . . .
)

Specifying colClasses in the read.csv

If we combine what @Hendy and @Oddysseus Ithaca contributed, we get cleaner and a more general (i.e., adaptable?) chunk of code.

    data <- read.csv("test.csv", head = F, colClasses = c(V36 = "character", V38 = "character"))

How do I correctly upgrade angular 2 (npm) to the latest version?

If you want to install/upgrade all packages to the latest version and you are running windows you can use this in powershell.exe:

foreach($package in @("animations","common","compiler","core","forms","http","platform-browser","platform-browser-dynamic","router")) {
    npm install @angular/$package@latest -E
}

If you also use the cli, you can do this:

foreach($package in @('animations','common','compiler','core','forms','http','platform-browser','platform-browser-dynamic','router', 'cli','compiler-cli')){
    iex "npm install @angular/$package@latest -E $(If($('cli','compiler-cli').Contains($package)){'-D'})";
}

This will save the packages exact (-E), and the cli packages in devDependencies (-D)

asp:TextBox ReadOnly=true or Enabled=false?

Readonly will allow the user to copy text from it. Disabled will not.

How to send email from Terminal?

If all you need is a subject line (as in an alert message) simply do:

mailx -s "This is all she wrote" < /dev/null "myself@myaddress"

Convert a Unix timestamp to time in JavaScript

shortest one-liner solution to format seconds as hh:mm:ss: variant:

_x000D_

console.log(new Date(1549312452 * 1000).toISOString().slice(0, 19).replace('T', ' '));_x000D_
// "2019-02-04 20:34:12"

_x000D_

How do I fix a "Performance counter registry hive consistency" when installing SQL Server R2 Express?

You can skip the Performance counter check in the setup altogether:

setup.exe /ACTION=install /SKIPRULES=PerfMonCounterNotCorruptedCheck

How can I determine the sector size in windows?

HTML: Select multiple as dropdown

Here is the documentation of <select>. You are using 2 attributes:

multiple
This Boolean attribute indicates that multiple options can be selected in the list. If it is not specified, then only one option can be selected at a time. When multiple is specified, most browsers will show a scrolling list box instead of a single line dropdown.

size
If the control is presented as a scrolling list box (e.g. when multiple is specified), this attribute represents the number of rows in the list that should be visible at one time. Browsers are not required to present a select element as a scrolled list box. The default value is 0.

As described in the docs. <select size="1" multiple> will render a List box only 1 line visible and a scrollbar. So you are loosing the dropdown/arrow with the multiple attribute.

What are the benefits of using C# vs F# or F# vs C#?

F# Has Better Performance than C# in Math
You could use F# projects in the same solution with C# (and call from one to another)
F# is really good for complex algorithmic programming, financial and scientific applications
F# logically is really good for the parallel execution (it is easier to make F# code execute on parallel cores, than C#)

How To Set Up GUI On Amazon EC2 Ubuntu server

So I follow first answer, but my vnc viewer gives me grey screen when I connect to it. And I found this Ask Ubuntu link to solve that.

The only difference with previous answer is you need to install these extra packages:

apt-get install gnome-panel gnome-settings-daemon metacity nautilus gnome-terminal

And use this ~/.vnc/xstartup file:

#!/bin/sh

export XKL_XMODMAP_DISABLE=1
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &

gnome-panel &
gnome-settings-daemon &
metacity &
nautilus &
gnome-terminal &

Everything else is the same.

Tested on EC2 Ubuntu 14.04 LTS.

What is the best way to tell if a character is a letter or number in Java without using regexes?

I'm looking for a function that checks only if it's one of the Latin letters or a decimal number. Since char c = 255, which in printable version is + and considered as a letter by Character.isLetter(c). This function I think is what most developers are looking for:

private static boolean isLetterOrDigit(char c) {
    return (c >= 'a' && c <= 'z') ||
           (c >= 'A' && c <= 'Z') ||
           (c >= '0' && c <= '9');
}

Installing SQL Server 2012 - Error: Prior Visual Studio 2010 instances requiring update

there are two way:

First :

Inside your CD of SQL Server 2012

you can go to this path \redist\VisualStudioShell.

And you most install this file VS10sp1-KB983509.msp.

After several minutes your problem fix.

Restart your computer and then fire SetUp of SQL Server 2012.

See this picture.

enter image description here

Secound :

But if you want download online Service Pack 1 view This Link

And press download.

After download run this exe file and let it download and fix your VS2010 to VS2010 SP1.

And then restart your windows.

After this operation you can install SQL Server 2012

enter image description here

Root password inside a Docker container

You can log into the Docker container using the root user (ID = 0) instead of the provided default user when you use the -u option. E.g.

docker exec -u 0 -it mycontainer bash

root (id = 0) is the default user within a container. The image developer can create additional users. Those users are accessible by name. When passing a numeric ID, the user does not have to exist in the container.

from Docker documentation

Update: Of course you can also use the Docker management command for containers to run this:

docker container exec -u 0 -it mycontainer bash

How to send image to PHP file using Ajax?

Here is code that will upload multiple images at once, into a specific folder!

The HTML:

<form method="post" enctype="multipart/form-data" id="image_upload_form" action="submit_image.php">
<input type="file" name="images" id="images" multiple accept="image/x-png, image/gif, image/jpeg, image/jpg" />
<button type="submit" id="btn">Upload Files!</button>
</form>
<div id="response"></div>
<ul id="image-list">

</ul>

The PHP:

<?php
$errors = $_FILES["images"]["error"];
foreach ($errors as $key => $error) {
if ($error == UPLOAD_ERR_OK) {
    $name = $_FILES["images"]["name"][$key];
    //$ext = pathinfo($name, PATHINFO_EXTENSION);
    $name = explode("_", $name);
    $imagename='';
    foreach($name as $letter){
        $imagename .= $letter;
    }

    move_uploaded_file( $_FILES["images"]["tmp_name"][$key], "images/uploads/" .  $imagename);

}
}


echo "<h2>Successfully Uploaded Images</h2>";

And finally, the JavaSCript/Ajax:

(function () {
var input = document.getElementById("images"), 
    formdata = false;

function showUploadedItem (source) {
    var list = document.getElementById("image-list"),
        li   = document.createElement("li"),
        img  = document.createElement("img");
    img.src = source;
    li.appendChild(img);
    list.appendChild(li);
}   

if (window.FormData) {
    formdata = new FormData();
    document.getElementById("btn").style.display = "none";
}

input.addEventListener("change", function (evt) {
    document.getElementById("response").innerHTML = "Uploading . . ."
    var i = 0, len = this.files.length, img, reader, file;

    for ( ; i < len; i++ ) {
        file = this.files[i];

        if (!!file.type.match(/image.*/)) {
            if ( window.FileReader ) {
                reader = new FileReader();
                reader.onloadend = function (e) { 
                    showUploadedItem(e.target.result, file.fileName);
                };
                reader.readAsDataURL(file);
            }
            if (formdata) {
                formdata.append("images[]", file);
            }
        }   
    }

    if (formdata) {
        $.ajax({
            url: "submit_image.php",
            type: "POST",
            data: formdata,
            processData: false,
            contentType: false,
            success: function (res) {
                document.getElementById("response").innerHTML = res;
            }
        });
    }
}, false);
}());

Hope this helps

jQuery function to open link in new window

http://www.jquerybyexample.net/2012/05/open-link-in-new-tab-or-new-popup.html

$(document).ready(function() {
$('A.BLAH').click(function() {
var NWin = window.open($(this).prop('href'), '', 'height=600,width=1000');
if (window.focus)
{
NWin.focus();
}
return false;
});
});

How to read the content of a file to a string in C?

If you are reading special files like stdin or a pipe, you are not going to be able to use fstat to get the file size beforehand. Also, if you are reading a binary file fgets is going to lose the string size information because of embedded '\0' characters. Best way to read a file then is to use read and realloc:

#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>

int main () {
    char buf[4096];
    ssize_t n;
    char *str = NULL;
    size_t len = 0;
    while (n = read(STDIN_FILENO, buf, sizeof buf)) {
        if (n < 0) {
            if (errno == EAGAIN)
                continue;
            perror("read");
            break;
        }
        str = realloc(str, len + n + 1);
        memcpy(str + len, buf, n);
        len += n;
        str[len] = '\0';
    }
    printf("%.*s\n", len, str);
    return 0;
}

startsWith() and endsWith() functions in PHP

Not sure why this is so difficult for people. Substr does a great job and is efficient as you don't need to search the whole string if it doesn't match.

Additionally, since I'm not checking integer values but comparing strings I don't have to necessarily have to worry about the strict === case. However, === is a good habit to get into.

function startsWith($haystack,$needle) {
  substring($haystack,0,strlen($needle)) == $needle) { return true; }
   return false;
}

function endsWith($haystack,$needle) {
  if(substring($haystack,-strlen($needle)) == $needle) { return true; }
   return false;
}

or even better optimized.

function startsWith($haystack,$needle) {
  return substring($haystack,0,strlen($needle)) == $needle);
}

function endsWith($haystack,$needle) {
  return substring($haystack,-strlen($needle)) == $needle);
}

Full screen background image in an activity

If you want your image to show BEHIND a transparent Action Bar, put the following into your Theme's style definition:

<item name="android:windowActionBarOverlay">true</item>

Enjoy!

How to uncheck checkbox using jQuery Uniform library

First of all, checked can have a value of checked, or an empty string.

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

$('#check1').live('click', function() {
    $('#check2').attr('checked', 'checked').uniform();
});

How to detect online/offline event cross-browser?

The window.navigator.onLine attribute and its associated events are currently unreliable on certain web browsers (especially Firefox desktop) as @Junto said, so I wrote a little function (using jQuery) that periodically checks the network connectivity status and raise the appropriate offline and online events:

// Global variable somewhere in your app to replicate the 
// window.navigator.onLine variable (this last is not modifiable). It prevents
// the offline and online events to be triggered if the network
// connectivity is not changed
var IS_ONLINE = true;

function checkNetwork() {
  $.ajax({
    // Empty file in the root of your public vhost
    url: '/networkcheck.txt',
    // We don't need to fetch the content (I think this can lower
    // the server's resources needed to send the HTTP response a bit)
    type: 'HEAD',
    cache: false, // Needed for HEAD HTTP requests
    timeout: 2000, // 2 seconds
    success: function() {
      if (!IS_ONLINE) { // If we were offline
        IS_ONLINE = true; // We are now online
        $(window).trigger('online'); // Raise the online event
      }
    },
    error: function(jqXHR) {
      if (jqXHR.status == 0 && IS_ONLINE) {
        // We were online and there is no more network connection
        IS_ONLINE = false; // We are now offline
        $(window).trigger('offline'); // Raise the offline event
      } else if (jqXHR.status != 0 && !IS_ONLINE) {
        // All other errors (404, 500, etc) means that the server responded,
        // which means that there are network connectivity
        IS_ONLINE = true; // We are now online
        $(window).trigger('online'); // Raise the online event
      }
    }
  });
}

You can use it like this:

// Hack to use the checkNetwork() function only on Firefox 
// (http://stackoverflow.com/questions/5698810/detect-firefox-browser-with-jquery/9238538#9238538)
// (But it may be too restrictive regarding other browser
// who does not properly support online / offline events)
if (!(window.mozInnerScreenX == null)) {
    window.setInterval(checkNetwork, 30000); // Check the network every 30 seconds
}

To listen to the offline and online events (with the help of jQuery):

$(window).bind('online offline', function(e) {
  if (!IS_ONLINE || !window.navigator.onLine) {
    alert('We have a situation here');
  } else {
    alert('Battlestation connected');
  }
});

Get output parameter value in ADO.NET

Create the SqlParamObject which would give you control to access methods on the parameters

SqlParameter param = new SqlParameter();

SET the Name for your paramter (it should b same as you would have declared a variable to hold the value in your DataBase)

: param.ParameterName = "@yourParamterName";

Clear the value holder to hold you output data

: param.Value = 0;

Set the Direction of your Choice (In your case it should be Output)

: param.Direction = System.Data.ParameterDirection.Output;

Find and replace words/lines in a file

Any decent text editor has a search&replace facility that supports regular expressions.

If however, you have reason to reinvent the wheel in Java, you can do:

Path path = Paths.get("test.txt");
Charset charset = StandardCharsets.UTF_8;

String content = new String(Files.readAllBytes(path), charset);
content = content.replaceAll("foo", "bar");
Files.write(path, content.getBytes(charset));

This only works for Java 7 or newer. If you are stuck on an older Java, you can do:

String content = IOUtils.toString(new FileInputStream(myfile), myencoding);
content = content.replaceAll(myPattern, myReplacement);
IOUtils.write(content, new FileOutputStream(myfile), myencoding);

In this case, you'll need to add error handling and close the streams after you are done with them.

IOUtils is documented at http://commons.apache.org/proper/commons-io/javadocs/api-release/org/apache/commons/io/IOUtils.html

How to change the foreign key referential action? (behavior)

ALTER TABLE DROP FOREIGN KEY fk_name;
ALTER TABLE ADD FOREIGN KEY fk_name(fk_cols)
            REFERENCES tbl_name(pk_names) ON DELETE RESTRICT;

The object 'DF__' is dependent on column '' - Changing int to double

MS SQL Studio take care of when you delete the column but if you need to Delete Constraint Programmatically here is simple solution

Here’s a code snippet that’ll drop a column with a default constraint:

DECLARE @ConstraintName nvarchar(200)
SELECT @ConstraintName = Name FROM SYS.DEFAULT_CONSTRAINTS WHERE PARENT_OBJECT_ID = OBJECT_ID('__TableName__') AND PARENT_COLUMN_ID = (SELECT column_id FROM sys.columns WHERE NAME = N'__ColumnName__' AND object_id = OBJECT_ID(N'__TableName__'))
IF @ConstraintName IS NOT NULL
EXEC('ALTER TABLE __TableName__ DROP CONSTRAINT ' + @ConstraintName)
IF EXISTS (SELECT * FROM syscolumns WHERE id=object_id('__TableName__') AND name='__ColumnName__')
EXEC('ALTER TABLE __TableName__ DROP COLUMN __ColumnName__')

Just replace TableName and ColumnName with the appropriate values. You can safely run this even if the column has already been dropped.

Bonus: Here’s the code to drop foreign keys and other types of constraints.

IF EXISTS(SELECT 1 FROM INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE where TABLE_NAME = '__TableName__' AND COLUMN_NAME = '__ColumnName__')
BEGIN
SELECT @ConstraintName = CONSTRAINT_NAME FROM INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE where TABLE_NAME = '__TableName__' AND COLUMN_NAME = '__ColumnName__'
EXEC('ALTER TABLE __TableName__ DROP CONSTRAINT ' + @ConstraintName)
END

Blog

How do I use Access-Control-Allow-Origin? Does it just go in between the html head tags?

If you use Java and spring MVC you just need to add the following annotation to your method returning your page :

@CrossOrigin(origins = "*")

"*" is to allow your page to be accessible from anywhere. See https://developer.mozilla.org/fr/docs/Web/HTTP/Headers/Access-Control-Allow-Origin for more details about that.

How to make custom error pages work in ASP.NET MVC 4

I do something that requires less coding than the other solutions posted.

First, in my web.config, I have the following:

<customErrors mode="On" defaultRedirect="~/ErrorPage/Oops">
   <error redirect="~/ErrorPage/Oops/404" statusCode="404" />
   <error redirect="~/ErrorPage/Oops/500" statusCode="500" />
</customErrors>

And the controller (/Controllers/ErrorPageController.cs) contains the following:

public class ErrorPageController : Controller
{
    public ActionResult Oops(int id)
    {
        Response.StatusCode = id;

        return View();
    }
}

And finally, the view contains the following (stripped down for simplicity, but it can conta:

_x000D_

@{ ViewBag.Title = "Oops! Error Encountered"; }_x000D_
_x000D_
<section id="Page">_x000D_
  <div class="col-xs-12 well">_x000D_
    <table cellspacing="5" cellpadding="3" style="background-color:#fff;width:100%;" class="table-responsive">_x000D_
      <tbody>_x000D_
        <tr>_x000D_
          <td valign="top" align="left" id="tableProps">_x000D_
            <img width="25" height="33" src="~/Images/PageError.gif" id="pagerrorImg">_x000D_
          </td>_x000D_
          <td width="360" valign="middle" align="left" id="tableProps2">_x000D_
            <h1 style="COLOR: black; FONT: 13pt/15pt verdana" id="errortype"><span id="errorText">@Response.Status</span></h1>_x000D_
          </td>_x000D_
        </tr>_x000D_
        <tr>_x000D_
          <td width="400" colspan="2" id="tablePropsWidth"><font style="COLOR: black; FONT: 8pt/11pt verdana">Possible causes:</font>_x000D_
          </td>_x000D_
        </tr>_x000D_
        <tr>_x000D_
          <td width="400" colspan="2" id="tablePropsWidth2">_x000D_
            <font style="COLOR: black; FONT: 8pt/11pt verdana" id="LID1">_x000D_
                            <hr>_x000D_
                            <ul>_x000D_
                                <li id="list1">_x000D_
                                    <span class="infotext">_x000D_
                                        <strong>Baptist explanation: </strong>There_x000D_
                                        must be sin in your life. Everyone else opened it fine.<br>_x000D_
                                    </span>_x000D_
                                </li>_x000D_
                                <li>_x000D_
                                    <span class="infotext">_x000D_
                                        <strong>Presbyterian explanation: </strong>It's_x000D_
                                        not God's will for you to open this link.<br>_x000D_
                                    </span>_x000D_
                                </li>_x000D_
                                <li>_x000D_
                                    <span class="infotext">_x000D_
                                        <strong> Word of Faith explanation:</strong>_x000D_
                                        You lack the faith to open this link. Your negative words have prevented_x000D_
                                        you from realizing this link's fulfillment.<br>_x000D_
                                    </span>_x000D_
                                </li>_x000D_
                                <li>_x000D_
                                    <span class="infotext">_x000D_
                                        <strong>Charismatic explanation: </strong>Thou_x000D_
                                        art loosed! Be commanded to OPEN!<br>_x000D_
                                    </span>_x000D_
                                </li>_x000D_
                                <li>_x000D_
                                    <span class="infotext">_x000D_
                                        <strong>Unitarian explanation:</strong> All_x000D_
                                        links are equal, so if this link doesn't work for you, feel free to_x000D_
                                        experiment with other links that might bring you joy and fulfillment.<br>_x000D_
                                    </span>_x000D_
                                </li>_x000D_
                                <li>_x000D_
                                    <span class="infotext">_x000D_
                                        <strong>Buddhist explanation:</strong> .........................<br>_x000D_
                                    </span>_x000D_
                                </li>_x000D_
                                <li>_x000D_
                                    <span class="infotext">_x000D_
                                        <strong>Episcopalian explanation:</strong>_x000D_
                                        Are you saying you have something against homosexuals?<br>_x000D_
                                    </span>_x000D_
                                </li>_x000D_
                                <li>_x000D_
                                    <span class="infotext">_x000D_
                                        <strong>Christian Science explanation: </strong>There_x000D_
                                        really is no link.<br>_x000D_
                                    </span>_x000D_
                                </li>_x000D_
                                <li>_x000D_
                                    <span class="infotext">_x000D_
                                        <strong>Atheist explanation: </strong>The only_x000D_
                                        reason you think this link exists is because you needed to invent it.<br>_x000D_
                                    </span>_x000D_
                                </li>_x000D_
                                <li>_x000D_
                                    <span class="infotext">_x000D_
                                        <strong>Church counselor's explanation:</strong>_x000D_
                                        And what did you feel when the link would not open?_x000D_
                                    </span>_x000D_
                                </li>_x000D_
                            </ul>_x000D_
                            <p>_x000D_
                                <br>_x000D_
                            </p>_x000D_
                            <h2 style="font:8pt/11pt verdana; color:black" id="ietext">_x000D_
                                <img width="16" height="16" align="top" src="~/Images/Search.gif">_x000D_
                                HTTP @Response.StatusCode - @Response.StatusDescription <br>_x000D_
                            </h2>_x000D_
                        </font>_x000D_
          </td>_x000D_
        </tr>_x000D_
      </tbody>_x000D_
    </table>_x000D_
  </div>_x000D_
</section>

_x000D_

It's just as simple as that. It could be easily extended to offer more detailed error info, but ELMAH handles that for me & the statusCode & statusDescription is all that I usually need.

How can I remove all my changes in my SVN working directory?

svn status | grep '^M' | sed -e 's/^.//' | xargs rm

svn update

Will remove any file which has been modified. I seem to remember having trouble with revert when files and directories may have been added.

How to restart a windows service using Task Scheduler

Instead of using a bat file, you can simply create a Scheduled Task. Most of the time you define just one action. In this case, create two actions with the NET command. The first one to stop the service, the second one to start the service. Give them a STOP and START argument, followed by the service name.

In this example we restart the Printer Spooler service.

NET STOP "Print Spooler" 
NET START "Print Spooler"

Note: unfortunately NET RESTART <service name> does not exist.

How to copy sheets to another workbook using vba?

try this one

Sub Get_Data_From_File()

     'Note: In the Regional Project that's coming up we learn how to import data from multiple Excel workbooks
    ' Also see BONUS sub procedure below (Bonus_Get_Data_From_File_InputBox()) that expands on this by inlcuding an input box
    Dim FileToOpen As Variant
    Dim OpenBook As Workbook
    Application.ScreenUpdating = False
    FileToOpen = Application.GetOpenFilename(Title:="Browse for your File & Import Range", FileFilter:="Excel Files (*.xls*),*xls*")
    If FileToOpen <> False Then
        Set OpenBook = Application.Workbooks.Open(FileToOpen)
         'copy data from A1 to E20 from first sheet
        OpenBook.Sheets(1).Range("A1:E20").Copy
        ThisWorkbook.Worksheets("SelectFile").Range("A10").PasteSpecial xlPasteValues
        OpenBook.Close False
        
    End If
    Application.ScreenUpdating = True
End Sub

or this one:

Get_Data_From_File_InputBox()

Dim FileToOpen As Variant
Dim OpenBook As Workbook
Dim ShName As String
Dim Sh As Worksheet
On Error GoTo Handle:

FileToOpen = Application.GetOpenFilename(Title:="Browse for your File & Import Range", FileFilter:="Excel Files (*.xls*),*.xls*")
Application.ScreenUpdating = False
Application.DisplayAlerts = False

If FileToOpen <> False Then
    Set OpenBook = Application.Workbooks.Open(FileToOpen)
    ShName = Application.InputBox("Enter the sheet name to copy", "Enter the sheet name to copy")
    For Each Sh In OpenBook.Worksheets
        If UCase(Sh.Name) Like "*" & UCase(ShName) & "*" Then
            ShName = Sh.Name
        End If
    Next Sh

    'copy data from the specified sheet to this workbook - updae range as you see fit
    OpenBook.Sheets(ShName).Range("A1:CF1100").Copy
    ThisWorkbook.ActiveSheet.Range("A10").PasteSpecial xlPasteValues
    OpenBook.Close False
End If
Application.ScreenUpdating = True
Application.DisplayAlerts = True
Exit Sub

Handle: If Err.Number = 9 Then MsgBox "The sheet name does not exist. Please check spelling" Else MsgBox "An error has occurred." End If OpenBook.Close False Application.ScreenUpdating = True Application.DisplayAlerts = True End Sub

both work as

Creating virtual directories in IIS express

@Be.St.'s aprroach is true, but incomplete. I'm just copying his explanation with correcting the incorrect part.

IIS express configuration is managed by applicationhost.config.
You can find it in

Users\<username>\Documents\IISExpress\config folder.

Inside you can find the sites section that hold a section for each IIS Express configured site.

Add (or modify) a site section like this:

<site name="WebSiteWithVirtualDirectory" id="20">
   <application path="/" applicationPool="Clr4IntegratedAppPool">
     <virtualDirectory path="/" physicalPath="c:\temp\website1" />
     <virtualDirectory path="/OffSiteStuff" physicalPath="d:\temp\SubFolderApp" />
   </application>
   <bindings>
      <binding protocol="http" bindingInformation="*:1132:localhost" />
   </bindings>
</site>

Instead of adding a new application block, you should just add a new virtualDirectory element to the application parent element.

Edit - Visual Studio 2015

If you're looking for the applicationHost.config file and you're using VS2015 you'll find it in:

[solution_directory]/.vs/config/applicationHost.config

Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?

You can find accurate answer for this query in oracle documentation page about multiple inheritance

Multiple inheritance of state: Ability to inherit fields from multiple classes

One reason why the Java programming language does not permit you to extend more than one class is to avoid the issues of multiple inheritance of state, which is the ability to inherit fields from multiple classes

If multiple inheritance is allowed and When you create an object by instantiating that class, that object will inherit fields from all of the class's superclasses. It will cause two issues.
1. What if methods or constructors from different super classes instantiate the same field?
2. Which method or constructor will take precedence?
Multiple inheritance of implementation: Ability to inherit method definitions from multiple classes

Problems with this approach: name conflicts and ambiguity. If a subclass and superclass contain same method name (and signature), compiler can't determine which version to invoke.

But java supports this type of multiple inheritance with default methods, which have been introduced since Java 8 release. The Java compiler provides some rules to determine which default method a particular class uses.

Refer to below SE post for more details on resolving diamond problem:

What are the differences between abstract classes and interfaces in Java 8?
Multiple inheritance of type: Ability of a class to implement more than one interface.

Since interface does not contain mutable fields, you do not have to worry about problems that result from multiple inheritance of state here.

How to make graphics with transparent background in R using ggplot2?

As for someone don't like gray background like academic editor, try this:

p <- p + theme_bw()
p

When is a language considered a scripting language?

I would say scripting language is the one heavily manipulating entities it doesn't itself define. For instance, JavaScript manipulates DOM objects provided by the browser, PHP operates enormous library of C-based functions, and so on. Of course not a precise definition, more a way to think if it.

SQL: IF clause within WHERE clause

Use a CASE statement instead of IF.

Android Studio don't generate R.java for my import project

If you are facing this problem in a specific module in your project, you could try opening just that module as a project and then build it. This worked for me. It was failing to generate the R file for the module when I was trying to re-build the entire project.

How to show changed file name only with git log?

I stumbled in here looking for a similar answer without the "git log" restriction. The answers here didn't give me what I needed but this did so I'll add it in case others find it useful:

git diff --name-only

You can also couple this with standard commit pointers to see what has changed since a particular commit:

git diff --name-only HEAD~3
git diff --name-only develop
git diff --name-only 5890e37..ebbf4c0

This succinctly provides file names only which is great for scripting. For example:

git diff --name-only develop | while read changed_file; do echo "This changed from the develop version: $changed_file"; done

#OR

git diff --name-only develop | xargs tar cvf changes.tar

How to delete all records from table in sqlite with Android?

you can use two different methods to delete or any query in sqlite android

first method is

public void deleteItem(Student item) {
 SQLiteDatabase db = getWritableDatabase();
 String whereClause = "id=?";
 String whereArgs[] = {item.id.toString()};
 db.delete("Items", whereClause, whereArgs);
}

second method

public void deleteAll()
{
  SQLiteDatabase db = this.getWritableDatabase();
  db.execSQL("delete from "+ TABLE_NAME);
  db.close();
}

use any method for your use case

How do I prevent CSS inheritance?

just set them back to their defaults in the "#sidebar ul li" selector

Online PHP syntax checker / validator

To expand on my comment.

You can validate on the command line using php -l [filename], which does a syntax check only (lint). This will depend on your php.ini error settings, so you can edit you php.ini or set the error_reporting in the script.

Here's an example of the output when run on a file containing:

<?php
echo no quotes or semicolon

Results in:

PHP Parse error:  syntax error, unexpected T_STRING, expecting ',' or ';' in badfile.php on line 2

Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in badfile.php on line 2

Errors parsing badfile.php

I suggested you build your own validator.

A simple page that allows you to upload a php file. It takes the uploaded file runs it through php -l and echos the output.

Note: this is not a security risk it does not execute the file, just checks for syntax errors.

Here's a really basic example of creating your own:

<?php
if (isset($_FILES['file'])) {
    echo '<pre>';
    passthru('php -l '.$_FILES['file']['tmp_name']);
    echo '</pre>';
}
?>
<form action="" method="post" enctype="multipart/form-data">
    <input type="file" name="file"/>
    <input type="submit"/>
</form>

SQLAlchemy equivalent to SQL "LIKE" statement

Using PostgreSQL like (see accepted answer above) somehow didn't work for me although cases matched, but ilike (case insensisitive like) does.

What is the Python equivalent for a case/switch statement?

While the official docs are happy not to provide switch, I have seen a solution using dictionaries.

For example:

# define the function blocks
def zero():
    print "You typed zero.\n"

def sqr():
    print "n is a perfect square\n"

def even():
    print "n is an even number\n"

def prime():
    print "n is a prime number\n"

# map the inputs to the function blocks
options = {0 : zero,
           1 : sqr,
           4 : sqr,
           9 : sqr,
           2 : even,
           3 : prime,
           5 : prime,
           7 : prime,
}

Then the equivalent switch block is invoked:

options[num]()

This begins to fall apart if you heavily depend on fall through.

How does the JPA @SequenceGenerator annotation work

sequenceName is the name of the sequence in the DB. This is how you specify a sequence that already exists in the DB. If you go this route, you have to specify the allocationSize which needs to be the same value that the DB sequence uses as its "auto increment".

Usage:

@GeneratedValue(generator="my_seq")
@SequenceGenerator(name="my_seq",sequenceName="MY_SEQ", allocationSize=1)

If you want, you can let it create a sequence for you. But to do this, you must use SchemaGeneration to have it created. To do this, use:

@GeneratedValue(strategy=GenerationType.SEQUENCE)

Also, you can use the auto-generation, which will use a table to generate the IDs. You must also use SchemaGeneration at some point when using this feature, so the generator table can be created. To do this, use:

@GeneratedValue(strategy=GenerationType.AUTO)

Call a url from javascript

var req ;

// Browser compatibility check          
if (window.XMLHttpRequest) {
   req = new XMLHttpRequest();
    } else if (window.ActiveXObject) {

 try {
   req = new ActiveXObject("Msxml2.XMLHTTP");
 } catch (e) {

   try {
     req = new ActiveXObject("Microsoft.XMLHTTP");
   } catch (e) {}
 }

}


var req = new XMLHttpRequest();
req.open("GET", "test.html",true);
req.onreadystatechange = function () {
    //document.getElementById('divTxt').innerHTML = "Contents : " + req.responseText;
}

req.send(null);

Android Relative Layout Align Center

Is this what you need?

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

    <TableRow
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp" >

        <ImageView
            android:id="@+id/place_category_icon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="0"
            android:contentDescription="ss"
            android:paddingRight="15dp"
            android:paddingTop="10dp"
            android:src="@drawable/marker" />

        <TextView
            android:id="@+id/place_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Place Name"
            android:textColor="#F00F00"
            android:layout_gravity="center_vertical"
            android:textSize="14sp"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/place_distance"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="0"
            android:layout_gravity="center_vertical"
            android:text="320" />
    </TableRow>

</RelativeLayout>

Spring CORS No 'Access-Control-Allow-Origin' header is present

If you are using Spring Security ver >= 4.2 you can use Spring Security's native support instead of including Apache's:

@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**");
    }
}

The example above was copied from a Spring blog post in which you also can find information about how to configure CORS on a controller, specific controller methods, etc. Moreover, there is also XML configuration examples as well as Spring Boot integration.

Foreign key constraint may cause cycles or multiple cascade paths?

SQL Server does simple counting of cascade paths and, rather than trying to work out whether any cycles actually exist, it assumes the worst and refuses to create the referential actions (CASCADE): you can and should still create the constraints without the referential actions. If you can't alter your design (or doing so would compromise things) then you should consider using triggers as a last resort.

FWIW resolving cascade paths is a complex problem. Other SQL products will simply ignore the problem and allow you to create cycles, in which case it will be a race to see which will overwrite the value last, probably to the ignorance of the designer (e.g. ACE/Jet does this). I understand some SQL products will attempt to resolve simple cases. Fact remains, SQL Server doesn't even try, plays it ultra safe by disallowing more than one path and at least it tells you so.

Microsoft themselves advises the use of triggers instead of FK constraints.

Generate a sequence of numbers in Python

Assuming I've guessed the pattern correctly (alternating increments of 1 and 3), this should produce the desired result:

def sequence():
    res = []
    diff = 1
    x = 1
    while x <= 100:
        res.append(x)
        x += diff
        diff = 3 if diff == 1 else 1
    return ', '.join(res)

How to list all AWS S3 objects in a bucket using Java

I know this is an old post, but this still might be usefull to anyone: The Java/Android SDK on version 2.1 provides a method called setMaxKeys. Like this:

s3objects.setMaxKeys(arg0)

You probably found a solution by now, but please check one answer as correct so that it might help others in the future.

How to compare two java objects

You need to provide your own implementation of equals() in MyClass.

@Override
public boolean equals(Object other) {
    if (!(other instanceof MyClass)) {
        return false;
    }

    MyClass that = (MyClass) other;

    // Custom equality check here.
    return this.field1.equals(that.field1)
        && this.field2.equals(that.field2);
}

You should also override hashCode() if there's any chance of your objects being used in a hash table. A reasonable implementation would be to combine the hash codes of the object's fields with something like:

@Override
public int hashCode() {
    int hashCode = 1;

    hashCode = hashCode * 37 + this.field1.hashCode();
    hashCode = hashCode * 37 + this.field2.hashCode();

    return hashCode;
}

See this question for more details on implementing a hash function.

How to remove a web site from google analytics

AS of 2018

Login to your analytics account
Select the account/property you want to delete
Click the  button. (left side bottom menu)
Click on property settings
To the right you will see Move To Trash Can Click on that
You will see the bellow screen. click on Delete Property button

or if you want to delete the account

follow the same steps, but this time click on the Accoutn Settings tab see below

Now Click on Move to Trash Can (button to the right)

when you see the next screen confirm to delete the account by clicking on the Trash Account button.

How to delete a website from google analytics

How do Python's any and all functions work?

The concept is simple:

M =[(1, 1), (5, 6), (0, 0)]

1) print([any(x) for x in M])
[True, True, False] #only the last tuple does not have any true element

2) print([all(x) for x in M])
[True, True, False] #all elements of the last tuple are not true

3) print([not all(x) for x in M])
[False, False, True] #NOT operator applied to 2)

4) print([any(x)  and not all(x) for x in M])
[False, False, False] #AND operator applied to 1) and 3)
# if we had M =[(1, 1), (5, 6), (1, 0)], we could get [False, False, True]  in 4)
# because the last tuple satisfies both conditions: any of its elements is TRUE 
#and not all elements are TRUE

Eclipse - "Workspace in use or cannot be created, chose a different one."

Running eclipse in Administrator Mode fixed it for me. You can do this by [Right Click] -> Run as Administrator on the eclipse.exe from your install dir.

I was on a working environment with win7 machine having restrictive permission. I also did remove the .lock and .log files but that did not help. It can be a combination of all as well that made it work.

Retrieve a single file from a repository

I use this

$ cat ~/.wgetrc
check_certificate = off

$ wget https://raw.github.com/jquery/jquery/master/grunt.js
HTTP request sent, awaiting response... 200 OK
Length: 11339 (11K) [text/plain]
Saving to: `grunt.js'

html - table row like a link

This saves you having to duplicate the link in the tr - just fish it out of the first a.

$(".link-first-found").click(function() {
 var href;
href = $(this).find("a").attr("href");
if (href !== "") {
return document.location = href;
}
});

Please initialize the log4j system properly. While running web service

Well, if you had already created the log4j.properties you would add its path to the classpath so it would be found during execution.
Yes, the thingy will search for this file in the classpath.
Since you said you looked into axis and didnt find one, I am assuming you dont have a log4j.properties, so here's a crude but complete example.
Create it somewhere and add to your classpath. Put it for example, in c:/proj/resources/log4j.properties

In your classpath you simple add .......;c:/proj/resources

# Root logger option
log4j.rootLogger=DEBUG, stdout, file

# Redirect log messages to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

# Redirect log messages to a log file, support file rolling.
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=c:/project/resources/t-output/log4j-application.log
log4j.appender.file.MaxFileSize=5MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

Right way to convert data.frame to a numeric matrix, when df also contains strings?

Another way of doing it is by using the read.table() argument colClasses to specify the column type by making colClasses=c(*column class types*). If there are 6 columns whose members you want as numeric, you need to repeat the character string "numeric" six times separated by commas, importing the data frame, and as.matrix() the data frame. P.S. looks like you have headers, so I put header=T.

as.matrix(read.table(SFI.matrix,header=T,
colClasses=c("numeric","numeric","numeric","numeric","numeric","numeric"),
sep=","))

How to pass multiple parameters to a get method in ASP.NET Core

To parse the search parameters from the URL, you need to annotate the controller method parameters with [FromQuery], for example:

[Route("api/person")]
public class PersonController : Controller
{
    [HttpGet]
    public string GetById([FromQuery]int id)
    {

    }

    [HttpGet]
    public string GetByName([FromQuery]string firstName, [FromQuery]string lastName)
    {

    }

    [HttpGet]
    public string GetByNameAndAddress([FromQuery]string firstName, [FromQuery]string lastName, [FromQuery]string address)
    {

    }
}

Generate table relationship diagram from existing schema (SQL Server)

Yes you can use SQL Server 2008 itself but you need to install SQL Server Management Studio Express (if not installed ) . Just right Click on Database Diagrams and create new diagram. Select the exisiting tables and if you have specified the references in your tables properly. You will be able to see the complete diagram of selected tables. For further reference see Getting started with SQL Server database diagrams

Oracle Date - How to add years to date

How to set underline text on textview?

Use this

tvHide.setPaintFlags(tvHide.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);

psql: FATAL: Peer authentication failed for user "dev"

When you specify:

psql -U user

it connects via UNIX Socket, which by default uses peer authentication, unless specified in pg_hba.conf otherwise.

You can specify:

host    database             user             127.0.0.1/32       md5
host    database             user             ::1/128            md5

to get TCP/IP connection on loopback interface (both IPv4 and IPv6) for specified database and user.

After changes you have to restart postgres or reload it's configuration. Restart that should work in modern RHEL/Debian based distros:

service postgresql restart

Reload should work in following way:

pg_ctl reload

but the command may differ depending of PATH configuration - you may have to specify absolute path, which may be different, depending on way the postgres was installed.

Then you can use:

psql -h localhost -U user -d database

to login with that user to specified database over TCP/IP. md5 stands for encrypted password, while you can also specify password for plain text passwords during authorisation. These 2 options shouldn't be of a great matter as long as database server is only locally accessible, with no network access.

Important note: Definition order in pg_hba.conf matters - rules are read from top to bottom, like iptables, so you probably want to add proposed rules above the rule:

host    all             all             127.0.0.1/32            ident

How to set width to 100% in WPF

You could use HorizontalContentAlignment="Stretch" as follows:

<ListBox HorizontalContentAlignment="Stretch"/>

Python Remove last char from string and return it

The precise wording of the question makes me think it's impossible.

return to me means you have a function, which you have passed a string as a parameter.

You cannot change this parameter. Assigning to it will only change the value of the parameter within the function, not the passed in string. E.g.

>>> def removeAndReturnLastCharacter(a):
        c = a[-1]
        a = a[:-1]
        return c

>>> b = "Hello, Gaukler!"
>>> removeAndReturnLastCharacter(b)
!

>>> b    # b has not been changed
Hello, Gaukler!

make image( not background img) in div repeat?

Not with CSS you can't. You need to use JS. A quick example copying the img to the background:

var $el = document.getElementById( 'rightflower' )
  , $img = $el.getElementsByTagName( 'img' )[0]
  , src  = $img.src

$el.innerHTML = "";
$el.style.background = "url( " + src + " ) repeat-y;"

Or you can actually repeat the image, but how many times?

var $el = document.getElementById( 'rightflower' )
  , str = ""
  , imgHTML = $el.innerHTML
  , i, i2;
for( i=0,i2=10; i<i2; i++ ){
    str += imgHTML;
}
$el.innerHTML = str;

Comparing two maps

As long as you override equals() on each key and value contained in the map, then m1.equals(m2) should be reliable to check for maps equality.

The same result can be obtained also by comparing toString() of each map as you suggested, but using equals() is a more intuitive approach.

May not be your specific situation, but if you store arrays in the map, may be a little tricky, because they must be compared value by value, or using Arrays.equals(). More details about this see here.

Google Maps API - Get Coordinates of address

Althugh you asked for Google Maps API, I suggest an open source, working, legal, free and crowdsourced API by Open street maps

https://nominatim.openstreetmap.org/search?q=Mumbai&format=json

Here is the API documentation for reference.

Edit: It looks like there are discrepancies occasionally, at least in terms of postal codes, when compared to the Google Maps API, and the latter seems to be more accurate. This was the case when validating addresses in Canada with the Canada Post search service, however, it might be true for other countries too.

Sort an Array by keys based on another Array?

function sortArrayByArray(array $toSort, array $sortByValuesAsKeys)
{
    $commonKeysInOrder = array_intersect_key(array_flip($sortByValuesAsKeys), $toSort);
    $commonKeysWithValue = array_intersect_key($toSort, $commonKeysInOrder);
    $sorted = array_merge($commonKeysInOrder, $commonKeysWithValue);
    return $sorted;
}

MySQL ORDER BY multiple column ASC and DESC

Ok, I THINK I understand what you want now, and let me clarify to confirm before the query. You want 1 record for each user. For each user, you want their BEST POINTS score record. Of the best points per user, you want the one with the best average time. Once you have all users "best" values, you want the final results sorted with best points first... Almost like ranking of a competition.

So now the query. If the above statement is accurate, you need to start with getting the best point/average time per person and assigning a "Rank" to that entry. This is easily done using MySQL @ variables. Then, just include a HAVING clause to only keep those records ranked 1 for each person. Finally apply the order by of best points and shortest average time.

select
      U.UserName,
      PreSortedPerUser.Point,
      PreSortedPerUser.Avg_Time,
      @UserRank := if( @lastUserID = PreSortedPerUser.User_ID, @UserRank +1, 1 ) FinalRank,
      @lastUserID := PreSortedPerUser.User_ID
   from
      ( select
              S.user_id,
              S.point,
              S.avg_time
           from
              Scores S
           order by
              S.user_id,
              S.point DESC,
              S.Avg_Time ) PreSortedPerUser
         JOIN Users U
            on PreSortedPerUser.user_ID = U.ID,
      ( select @lastUserID := 0,
               @UserRank := 0 ) sqlvars 
   having
      FinalRank = 1
   order by
      Point Desc,
      Avg_Time

Results as handled by SQLFiddle

Note, due to the inline @variables needed to get the answer, there are the two extra columns at the end of each row. These are just "left-over" and can be ignored in any actual output presentation you are trying to do... OR, you can wrap the entire thing above one more level to just get the few columns you want like

select 
      PQ.UserName,
      PQ.Point,
      PQ.Avg_Time
   from
      ( entire query above pasted here ) as PQ

Choosing a file in Python with simple Dialog

Python 3.x version of Etaoin's answer for completeness:

from tkinter.filedialog import askopenfilename
filename = askopenfilename()

How to redirect both stdout and stderr to a file

You can do it like that 2>&1:

 command > file 2>&1

how to stop a loop arduino

The three options that come to mind:

1st) End void loop() with while(1)... or equally as good... while(true)

void loop(){
    //the code you want to run once here, 
    //e.g., If (blah == blah)...etc.

    while(1)        //last line of main loop
}

This option runs your code once and then kicks the Ard into an endless "invisible" loop. Perhaps not the nicest way to go, but as far as outside appearances, it gets the job done.
The Ard will continue to draw current while it spins itself in an endless circle... perhaps one could set up a sort of timer function that puts the Ard to sleep after so many seconds, minutes, etc., of looping... just a thought... there are certainly various sleep libraries out there... see e.g., Monk, Programming Arduino: Next Steps, pgs., 85-100 for further discussion of such.

2nd) Create a "stop main loop" function with a conditional control structure that makes its initial test fail on a second pass.
This often requires declaring a global variable and having the "stop main loop" function toggle the value of the variable upon termination. E.g.,

boolean stop_it = false;         //global variable

void setup(){
    Serial.begin(9600); 
    //blah...
}

boolean stop_main_loop(){        //fancy stop main loop function

    if(stop_it == false){   //which it will be the first time through

        Serial.println("This should print once.");

       //then do some more blah....you can locate all the
       // code you want to run once here....eventually end by 
       //toggling the "stop_it" variable ... 
    }
    stop_it = true; //...like this
    return stop_it;   //then send this newly updated "stop_it" value
                     // outside the function
}

void loop{ 

    stop_it = stop_main_loop();     //and finally catch that updated 
                                    //value and store it in the global stop_it 
                                    //variable, effectively 
                                    //halting the loop  ...
}

Granted, this might not be especially pretty, but it also works.
It kicks the Ard into another endless "invisible" loop, but this time it's a case of repeatedly checking the if(stop_it == false) condition in stop_main_loop() which of course fails to pass every time after the first time through.

3rd) One could once again use a global variable but use a simple if (test == blah){} structure instead of a fancy "stop main loop" function.

boolean start = true;                  //global variable

void setup(){

      Serial.begin(9600);
}

void loop(){

      if(start == true){           //which it will be the first time through



           Serial.println("This should print once.");       

           //the code you want to run once here, 
           //e.g., more If (blah == blah)...etc.

     }

start = false;                //toggle value of global "start" variable
                              //Next time around, the if test is sure to fail.
}

There are certainly other ways to "stop" that pesky endless main loop but these three as well as those already mentioned should get you started.

Calculating how many days are between two dates in DB2?

It seems like one closing brace is missing at ,right(a2.chdlm,2)))) from sysibm.sysdummy1 a1,

So your Query will be

select days(current date) - days(date(select concat(concat(concat(concat(left(a2.chdlm,4),'-'),substr(a2.chdlm,4,2)),'-'),right(a2.chdlm,2)))) from sysibm.sysdummy1 a1, chcart00 a2 where chstat = '05';

Table with fixed header and fixed column on pure css

To fix both Headers and Columns, you can use the following plugin:

http://www.fixedheadertable.com/

Updated in July 2019

Recently is emerged also a pure CSS solution that is based on CSS property position: sticky; (here for more details about it) applied onto each TH item (instead of their parent container)

Entity Framework select distinct name

use Select().Distinct()

for example

DBContext db = new DBContext();
var data= db.User_Food_UserIntakeFood .Select( ).Distinct();

Incrementing a date in JavaScript

Incrementing date's year with vanilla js:

start_date_value = "01/01/2019"
var next_year = new Date(start_date_value);
next_year.setYear(next_year.getYear() + 1);
console.log(next_year.getYear()); //=> 2020

Just in case someone wants to increment other value than the date (day)

Understanding Chrome network log "Stalled" state

https://developers.google.com/web/tools/chrome-devtools/network-performance/understanding-resource-timing

This comes from the official site of Chome-devtools and it helps. Here i quote:

Queuing If a request is queued it indicated that:

The request was postponed by the rendering engine because it's considered lower priority than critical resources (such as scripts/styles). This often happens with images.

The request was put on hold to wait for an unavailable TCP socket that's about to free up.

The request was put on hold because the browser only allows six TCP connections per origin on HTTP 1. Time spent making disk cache entries (typically very quick.)

Stalled/Blocking Time the request spent waiting before it could be sent. It can be waiting for any of the reasons described for Queueing. Additionally, this time is inclusive of any time spent in proxy negotiation.

PHP order array by date?

I recommend using DateTime objects instead of strings, because you cannot easily compare strings, which is required for sorting. You also get additional advantages for working with dates.

Once you have the DateTime objects, sorting is quite easy:

usort($array, function($a, $b) {
  return ($a['date'] < $b['date']) ? -1 : 1;
});

INNER JOIN ON vs WHERE clause

Others have pointed out that INNER JOIN helps human readability, and that's a top priority, I agree.
Let me try to explain why the join syntax is more readable.

A basic SELECT query is this:

SELECT stuff
FROM tables
WHERE conditions

The SELECT clause tells us what we're getting back; the FROM clause tells us where we're getting it from, and the WHERE clause tells us which ones we're getting.

JOIN is a statement about the tables, how they are bound together (conceptually, actually, into a single table).

Any query elements that control the tables - where we're getting stuff from - semantically belong to the FROM clause (and of course, that's where JOIN elements go). Putting joining-elements into the WHERE clause conflates the which and the where-from, that's why the JOIN syntax is preferred.

PHP removing a character in a string

I think that it's better to use simply str_replace, like the manual says:

If you don't need fancy replacing rules (like regular expressions), you should always use this function instead of ereg_replace() or preg_replace().

<?
$badUrl = "http://www.site.com/backend.php?/c=crud&m=index&t=care";
$goodUrl = str_replace('?/', '?', $badUrl);

With Twitter Bootstrap, how can I customize the h1 text color of one page and leave the other pages to be default?

There are helper classes in bootstrap 3 with contextual colors please use these classes in html attributes.

<p class="text-muted">...</p>
<p class="text-primary">...</p>
<p class="text-success">...</p>
<p class="text-info">...</p>
<p class="text-warning">...</p>
<p class="text-danger">...</p>

Reference: http://getbootstrap.com/css/#type

How do you develop Java Servlets using Eclipse?

I use Eclipse Java EE edition

Create a "Dynamic Web Project"

Install a local server in the server view, for the version of Tomcat I'm using. Then debug, and run on that server for testing.

When I deploy I export the project to a war file.

How do I get time of a Python program's execution?

For functions, I suggest using this simple decorator I created.

def timeit(method):
    def timed(*args, **kw):
        ts = time.time()
        result = method(*args, **kw)
        te = time.time()
        if 'log_time' in kw:
            name = kw.get('log_name', method.__name__.upper())
            kw['log_time'][name] = int((te - ts) * 1000)
        else:
            print('%r  %2.22f ms' % (method.__name__, (te - ts) * 1000))
        return result
    return timed

@timeit
def foo():
    do_some_work()


# 'foo'  0.000953 ms

Adding a module (Specifically pymorph) to Spyder (Python IDE)

just use '!' before the pip command in spyder terminal and it will be fine

Eg:

!pip install imutils

Good PHP ORM Library?

I really like Propel, here you can get an overview, the documentation is pretty good, and you can get it through PEAR or SVN.

You only need a working PHP5 install, and Phing to start generating classes.

how to modify the size of a column

Regardless of what error Oracle SQL Developer may indicate in the syntax highlighting, actually running your alter statement exactly the way you originally had it works perfectly:

ALTER TABLE TEST_PROJECT2 MODIFY proj_name VARCHAR2(300);

You only need to add parenthesis if you need to alter more than one column at once, such as:

ALTER TABLE TEST_PROJECT2 MODIFY (proj_name VARCHAR2(400), proj_desc VARCHAR2(400));

Using fonts with Rails asset pipeline

Now here's a twist:

You should place all fonts in app/assets/fonts/ as they WILL get precompiled in staging and production by default—they will get precompiled when pushed to heroku.

Font files placed in vendor/assets will NOT be precompiled on staging or production by default — they will fail on heroku. Source!

— @plapier, thoughtbot/bourbon

I strongly believe that putting vendor fonts into vendor/assets/fonts makes a lot more sense than putting them into app/assets/fonts. With these 2 lines of extra configuration this has worked well for me (on Rails 4):

app.config.assets.paths << Rails.root.join('vendor', 'assets', 'fonts')  
app.config.assets.precompile << /\.(?:svg|eot|woff|ttf)$/

— @jhilden, thoughtbot/bourbon

I've also tested it on rails 4.0.0. Actually the last one line is enough to safely precompile fonts from vendor folder. Took a couple of hours to figure it out. Hope it helped someone.

How to get a specific column value from a DataTable in c#

The table normally contains multiple rows. Use a loop and use row.Field<string>(0) to access the value of each row.

foreach(DataRow row in dt.Rows)
{
    string file = row.Field<string>("File");
}

You can also access it via index:

foreach(DataRow row in dt.Rows)
{
    string file = row.Field<string>(0);
}

If you expect only one row, you can also use the indexer of DataRowCollection:

string file = dt.Rows[0].Field<string>(0);

Since this fails if the table is empty, use dt.Rows.Count to check if there is a row:

if(dt.Rows.Count > 0)
    file = dt.Rows[0].Field<string>(0);

Float a DIV on top of another DIV

I know this post is little bit old but here is a potential solution for anyone who has the same problem:

First, I would change the CSS display for #popup to "none" instead of "hidden".

Second, I would change the HTML as follow:

<div id="overlay-back"></div>
<div id="popup">
    <div style="position: relative;">
        <img class="close-image" src="images/closebtn.png" />
        <span><img src="images/load_sign.png" width="400" height="566" /></span>
    </div>            
</div>

And for Style as follow:

.close-image
{
   display: block;
   float: right;
   cursor: pointer;
   z-index: 3;
   position: absolute;
   right: 0;
   top: 0;
}

I got this idea from this website (kessitek.com). A very good example on how to position elements,:

How to position a div on top of another div

I hope this helps,

Zag,

How to use icons and symbols from "Font Awesome" on Native Android Application

Try IcoMoon: http://icomoon.io

Pick the icons you want
Assign characters to each icon
Download the font

Say, you picked the play icon, assigned the letter 'P' to it, and downloaded the file icomoon.ttf to your asset folder. This is how you show the icon:

xml:

<TextView
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:textSize="48sp"
  android:text="P" />

java:

Typeface typeface = Typeface.createFromAsset(getAssets(), "icomoon.ttf");
textView.setTypeface(typeface);

I've given a talk on making beautiful Android apps, which includes explanation on using icon fonts, plus adding gradients to make the icons even prettier: http://www.sqisland.com/talks/beautiful-android

The icon font explanation starts at slide 34: http://www.sqisland.com/talks/beautiful-android/#34

LINQ: "contains" and a Lambda query

The Linq extension method Any could work for you...

buildingStatus.Any(item => item.GetCharValue() == v.Status)

Calling Javascript from a html form

Pretty example by Miquel (#32) should be refilled:

<html>
 <head>
  <script type="text/javascript">
   function handleIt(txt) {   // txt == content of form input
    alert("Entered value: " + txt);
   }
  </script>
 </head>
 <body>
 <!-- javascript function in form action must have a parameter. This 
    parameter contains a value of named input -->
  <form name="myform" action="javascript:handleIt(lastname.value)">  
   <input type="text" name="lastname" id="lastname" maxlength="40"> 
   <input name="Submit"  type="submit" value="Update"/>
  </form>
 </body>
</html>

And the form should have:

<form name="myform" action="javascript:handleIt(lastname.value)">

Check if a string is palindrome

Note that reversing the whole string (either with the rbegin()/rend() range constructor or with std::reverse) and comparing it with the input would perform unnecessary work.

It's sufficient to compare the first half of the string with the latter half, in reverse:

#include <string>
#include <algorithm>
#include <iostream>
int main()
{
    std::string s;
    std::cin >> s;
    if( equal(s.begin(), s.begin() + s.size()/2, s.rbegin()) )
        std::cout << "is a palindrome.\n";
    else
        std::cout << "is NOT a palindrome.\n";
}

demo: http://ideone.com/mq8qK

jQuery Datepicker close datepicker after selected date

actually you don't need to replace this all....

there are 2 ways to do this. One is to use autoclose property, the other (alternativ) way is to use the on change property thats fired by the input when selecting a Date.

HTML

<div class="container">
    <div class="hero-unit">
        <input type="text" placeholder="Sample 1: Click to show datepicker" id="example1">
    </div>
    <div class="hero-unit">
        <input type="text" placeholder="Sample 2: Click to show datepicker" id="example2">
    </div>
</div>

jQuery

$(document).ready(function () {
    $('#example1').datepicker({
        format: "dd/mm/yyyy",
        autoclose: true
    });

    //Alternativ way
    $('#example2').datepicker({
      format: "dd/mm/yyyy"
    }).on('change', function(){
        $('.datepicker').hide();
    });

});

this is all you have to do :)

HERE IS A FIDDLE to see whats happening.

Fiddleupdate on 13 of July 2016: CDN wasnt present anymore

According to your EDIT:

$('#example1').datepicker().on('changeDate', function (ev) {
    $('#example1').Close();
});

Here you take the Input (that has no Close-Function) and create a Datepicker-Element. If the element changes you want to close it but you still try to close the Input (That has no close-function).

Binding a mouseup event to the document state may not be the best idea because you will fire all containing scripts on each click!

Thats it :)

EDIT: August 2017 (Added a StackOverFlowFiddle aka Snippet. Same as in Top of Post)

_x000D_

$(document).ready(function () {_x000D_
    $('#example1').datepicker({_x000D_
        format: "dd/mm/yyyy",_x000D_
        autoclose: true_x000D_
    });_x000D_
_x000D_
    //Alternativ way_x000D_
    $('#example2').datepicker({_x000D_
      format: "dd/mm/yyyy"_x000D_
    }).on('change', function(){_x000D_
        $('.datepicker').hide();_x000D_
    });_x000D_
});

_x000D_

.hero-unit{_x000D_
  float: left;_x000D_
  width: 210px;_x000D_
  margin-right: 25px;_x000D_
}_x000D_
.hero-unit input{_x000D_
  width: 100%;_x000D_
}

_x000D_

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>_x000D_
<div class="container">_x000D_
    <div class="hero-unit">_x000D_
        <input type="text" placeholder="Sample 1: Click to show datepicker" id="example1">_x000D_
    </div>_x000D_
    <div class="hero-unit">_x000D_
        <input type="text" placeholder="Sample 2: Click to show datepicker" id="example2">_x000D_
    </div>_x000D_
</div>

_x000D_

EDIT: December 2018 Obviously Bootstrap-Datepicker doesnt work with jQuery 3.x see this to fix

Launch an app on OS X with command line

Why not just set add path to to the bin of the app. For MacVim, I did the following.

export PATH=/Applications/MacVim.app/Contents/bin:$PATH

An alias, is another option I tried.

alias mvim='/Applications/MacVim.app/Contents/bin/mvim'
alias gvim=mvim

With the export PATH I can call all of the commands in the app. Arguments passed well for my test with MacVim. Whereas the alias, I had to alias each command in the bin.

mvim README.txt
gvim Anotherfile.txt

Enjoy the power of alias and PATH. However, you do need to monitor changes when the OS is upgraded.

Why is my method undefined for the type object?

Change your main to:

public static void main(String[] args) {
    EchoServer echoServer = new EchoServer();
    echoServer.listen();
}

When you declare Object EchoServer0; you have a few mistakes.

EchoServer0 is of type Object, therefore it doesn't have the method listen().
You will also need to create an instance of it with new.
Another problem, this is only regarding naming conventions, you should call your variables starting by lower case letters, echoServer0 instead of EchoServer0. Uppercase names are usually for class names.
You should not create a variable with the same name as its class. It is confusing.

How do I change the figure size with subplots?

Alternatively, create a figure() object using the figsize argument and then use add_subplot to add your subplots. E.g.

import matplotlib.pyplot as plt
import numpy as np

f = plt.figure(figsize=(10,3))
ax = f.add_subplot(121)
ax2 = f.add_subplot(122)
x = np.linspace(0,4,1000)
ax.plot(x, np.sin(x))
ax2.plot(x, np.cos(x), 'r:')

Benefits of this method are that the syntax is closer to calls of subplot() instead of subplots(). E.g. subplots doesn't seem to support using a GridSpec for controlling the spacing of the subplots, but both subplot() and add_subplot() do.

How to export specific request to file using postman?

There is no direct option to export a single request from Postman.

You can create and export collections. Here is a link to help with that.

Regarding the single request thing, you can try a workaround. I tried with the RAW body parameters and it worked.

What you can do is,

In your request tab, click on the 3 dots in the top right corner of your request panel/box.
Select Code. This will open Generate Code Snippents window.
Copy the cURL code and save it in a text file. Share this with who you want to.
They can then import the request from the text file.

How does Facebook disable the browser's integrated Developer Tools?

I couldn't get it to trigger that on any page. A more robust version of this would do it:

window.console.log = function(){
    console.error('The developer console is temp...');
    window.console.log = function() {
        return false;
    }
}

console.log('test');

To style the output: Colors in JavaScript console

Edit Thinking @joeldixon66 has the right idea: Disable JavaScript execution from console « ::: KSpace :::

Secure FTP using Windows batch script

The built in FTP command doesn't have a facility for security. Use cUrl instead. It's scriptable, far more robust and has FTP security.

Creating a div element inside a div element in javascript

Yes, you either need to do this onload or in a <script> tag after the closing </body> tag, when the lc element is already found in the document's DOM tree.

TypeError: string indices must be integers, not str // working with dict

I see that you are looking for an implementation of the problem more than solving that error. Here you have a possible solution:

from itertools import chain

def involved(courses, person):
    courses_info = chain.from_iterable(x.values() for x in courses.values())
    return filter(lambda x: x['teacher'] == person, courses_info)

print involved(courses, 'Dave')

The first thing I do is getting the list of the courses and then filter by teacher's name.

How to set default font family in React Native?

Add

"rnpm": {
  "assets": [
 "./assets/fonts/"
  ]
}

in package.json then run react-native link

Initialization of all elements of an array to one default value in C++?

1) When you use an initializer, for a struct or an array like that, the unspecified values are essentially default constructed. In the case of a primitive type like ints, that means they will be zeroed. Note that this applies recursively: you could have an array of structs containing arrays and if you specify just the first field of the first struct, then all the rest will be initialized with zeros and default constructors.

2) The compiler will probably generate initializer code that is at least as good as you could do by hand. I tend to prefer to let the compiler do the initialization for me, when possible.

How to set a default entity property value with Hibernate

Use @ColumnDefault() annotation. This is hibernate only though.

Merge data frames based on rownames in R

See ?merge:

the name "row.names" or the number 0 specifies the row names.

Example:

R> de <- merge(d, e, by=0, all=TRUE)  # merge by row names (by=0 or by="row.names")
R> de[is.na(de)] <- 0                 # replace NA values
R> de
  Row.names   a   b   c   d   e   f   g   h   i  j  k  l  m  n  o  p  q  r  s
1         1 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 11 12 13 14 15 16 17 18 19
2         2 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9  1  0  0  0  0  0  0  0  0  0
3         3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0  0 21 22 23 24 25 26 27 28 29
   t
1 20
2  0
3 30

How to get the return value from a thread in python?

I'm using this wrapper, which comfortably turns any function for running in a Thread - taking care of its return value or exception. It doesn't add Queue overhead.

def threading_func(f):
    """Decorator for running a function in a thread and handling its return
    value or exception"""
    def start(*args, **kw):
        def run():
            try:
                th.ret = f(*args, **kw)
            except:
                th.exc = sys.exc_info()
        def get(timeout=None):
            th.join(timeout)
            if th.exc:
                raise th.exc[0], th.exc[1], th.exc[2] # py2
                ##raise th.exc[1] #py3                
            return th.ret
        th = threading.Thread(None, run)
        th.exc = None
        th.get = get
        th.start()
        return th
    return start

Usage Examples

def f(x):
    return 2.5 * x
th = threading_func(f)(4)
print("still running?:", th.is_alive())
print("result:", th.get(timeout=1.0))

@threading_func
def th_mul(a, b):
    return a * b
th = th_mul("text", 2.5)

try:
    print(th.get())
except TypeError:
    print("exception thrown ok.")

Notes on `threading` module

Comfortable return value & exception handling of a threaded function is a frequent "Pythonic" need and should indeed already be offered by the threading module - possibly directly in the standard Thread class. ThreadPool has way too much overhead for simple tasks - 3 managing threads, lots of bureaucracy. Unfortunately Thread's layout was copied from Java originally - which you see e.g. from the still useless 1st (!) constructor parameter group.

How to use subprocess popen Python

subprocess.Popen takes a list of arguments:

from subprocess import Popen, PIPE

process = Popen(['swfdump', '/tmp/filename.swf', '-d'], stdout=PIPE, stderr=PIPE)
stdout, stderr = process.communicate()

There's even a section of the documentation devoted to helping users migrate from os.popen to subprocess.

Why is this printing 'None' in the output?

Because there are two print statements. First is inside function and second is outside function. When function not return any thing that time it return None value.

Use return statement at end of function to return value.

e.g.:

Return None value.

>>> def test1():
...    print "In function."
... 
>>> a = test1()
In function.
>>> print a
None
>>> 
>>> print test1()
In function.
None
>>>
>>> test1()
In function.
>>>

Use return statement

>>> def test():
...   return "ACV"
... 
>>> print test()
ACV
>>> 
>>> a = test()
>>> print a
ACV
>>>

How to verify if $_GET exists?

   if (isset($_GET["id"])){
        //do stuff
    }

Does Django scale?

Note that if you're expecting 100K users per day, that are active for hours at a time (meaning max of 20K+ concurrent users), you're going to need A LOT of servers. SO has ~15,000 registered users, and most of them are probably not active daily. While the bulk of traffic comes from unregistered users, I'm guessing that very few of them stay on the site more than a couple minutes (i.e. they follow google search results then leave).

For that volume, expect at least 30 servers ... which is still a rather heavy 1,000 concurrent users per server.

Best way to split string into lines

Slightly twisted, but an iterator block to do it:

public static IEnumerable<string> Lines(this string Text)
{
    int cIndex = 0;
    int nIndex;
    while ((nIndex = Text.IndexOf(Environment.NewLine, cIndex + 1)) != -1)
    {
        int sIndex = (cIndex == 0 ? 0 : cIndex + 1);
        yield return Text.Substring(sIndex, nIndex - sIndex);
        cIndex = nIndex;
    }
    yield return Text.Substring(cIndex + 1);
}

You can then call:

var result = input.Lines().ToArray();

CSS fixed width in a span

Unfortunately inline elements (or elements having display:inline) ignore the width property. You should use floating divs instead:

<style type="text/css">
div.f1 { float: left; width: 20px; }
div.f2 { float: left; }
div.f3 { clear: both; }
</style>

<div class="f1"></div><div class="f2">The Lazy dog</div><div class="f3"></div>
<div class="f1">AND</div><div class="f2">The Lazy cat</div><div class="f3"></div>
<div class="f1">OR</div><div class="f2">The active goldfish</div><div class="f3"></div>

Now I see you need to use spans and lists, so we need to rewrite this a little bit:

<html><head>
<style type="text/css">
        span.f1 { display: block; float: left; clear: left; width: 60px; }
    li { list-style-type: none; }
    </style>

</head><body>
<ul>
<li><span class="f1">&nbsp;</span>The lazy dog.</li>
<li><span class="f1">AND</span> The lazy cat.</li>
<li><span class="f1">OR</span> The active goldfish.</li>
</ul>
</body>
</html>

Vue.js getting an element within a component

Composition API

Template refs section tells how this has been unified:

within template, use ref="myEl"; :ref= with a v-for
within script, have a const myEl = ref(null) and expose it from setup

The reference carries the DOM element from mounting onwards.

Reading integers from binary file in Python

As of Python 3.2+, you can also accomplish this using the from_bytes native int method:

file_size = int.from_bytes(fin.read(2), byteorder='big')

Note that this function requires you to specify whether the number is encoded in big- or little-endian format, so you will have to determine the endian-ness to make sure it works correctly.

Redefining the Index in a Pandas DataFrame object

Why don't you simply use set_index method?

In : col = ['a','b','c']

In : data = DataFrame([[1,2,3],[10,11,12],[20,21,22]],columns=col)

In : data
Out:
    a   b   c
0   1   2   3
1  10  11  12
2  20  21  22

In : data2 = data.set_index('a')

In : data2
Out:
     b   c
a
1    2   3
10  11  12
20  21  22

How do we determine the number of days for a given month in python

Use calendar.monthrange:

>>> from calendar import monthrange
>>> monthrange(2011, 2)
(1, 28)

Just to be clear, monthrange supports leap years as well:

>>> from calendar import monthrange
>>> monthrange(2012, 2)
(2, 29)

As @mikhail-pyrev mentions in a comment:

First number is weekday of first day of the month, second number is number of days in said month.

How to check if directory exist using C++ and winAPI

Here is a simple function which does exactly this :

#include <windows.h>
#include <string>

bool dirExists(const std::string& dirName_in)
{
  DWORD ftyp = GetFileAttributesA(dirName_in.c_str());
  if (ftyp == INVALID_FILE_ATTRIBUTES)
    return false;  //something is wrong with your path!

  if (ftyp & FILE_ATTRIBUTE_DIRECTORY)
    return true;   // this is a directory!

  return false;    // this is not a directory!
}

Jquery DatePicker Set default date

Code to display current date in element input or datepicker with ID="mydate"

Don't forget add reference to jquery-ui-*.js

    $(document).ready(function () {
        var dateNewFormat, onlyDate, today = new Date();

        dateNewFormat = today.getFullYear() + '-' + (today.getMonth() + 1);

        onlyDate = today.getDate();

        if (onlyDate.toString().length == 2) {
            dateNewFormat += '-' + onlyDate;
        }
        else {
            dateNewFormat += '-0' + onlyDate;
        }
        $('#mydate').val(dateNewFormat);
    });

How to update data in one table from corresponding data in another table in SQL Server 2005

update test1 t1, test2 t2
set t2.deptid = t1.deptid
where t2.employeeid = t1.employeeid

you can not use from keyword for the mysql

How to compare if two structs, slices or maps are equal?

If you're comparing them in unit test, a handy alternative is EqualValues function in testify.

Resize a large bitmap file to scaled output file on Android

Above code made a little cleaner. InputStreams have finally close wrapping to ensure they get closed as well:

*Note
Input: InputStream is, int w, int h
Output: Bitmap

    try
    {

        final int inWidth;
        final int inHeight;

        final File tempFile = new File(temp, System.currentTimeMillis() + is.toString() + ".temp");

        {

            final FileOutputStream tempOut = new FileOutputStream(tempFile);

            StreamUtil.copyTo(is, tempOut);

            tempOut.close();

        }



        {

            final InputStream in = new FileInputStream(tempFile);
            final BitmapFactory.Options options = new BitmapFactory.Options();

            try {

                // decode image size (decode metadata only, not the whole image)
                options.inJustDecodeBounds = true;
                BitmapFactory.decodeStream(in, null, options);

            }
            finally {
                in.close();
            }

            // save width and height
            inWidth = options.outWidth;
            inHeight = options.outHeight;

        }

        final Bitmap roughBitmap;

        {

            // decode full image pre-resized
            final InputStream in = new FileInputStream(tempFile);

            try {

                final BitmapFactory.Options options = new BitmapFactory.Options();
                // calc rought re-size (this is no exact resize)
                options.inSampleSize = Math.max(inWidth/w, inHeight/h);
                // decode full image
                roughBitmap = BitmapFactory.decodeStream(in, null, options);

            }
            finally {
                in.close();
            }

            tempFile.delete();

        }

        float[] values = new float[9];

        {

            // calc exact destination size
            Matrix m = new Matrix();
            RectF inRect = new RectF(0, 0, roughBitmap.getWidth(), roughBitmap.getHeight());
            RectF outRect = new RectF(0, 0, w, h);
            m.setRectToRect(inRect, outRect, Matrix.ScaleToFit.CENTER);
            m.getValues(values);

        }

        // resize bitmap
        final Bitmap resizedBitmap = Bitmap.createScaledBitmap(roughBitmap, (int) (roughBitmap.getWidth() * values[0]), (int) (roughBitmap.getHeight() * values[4]), true);

        return resizedBitmap;

    }
    catch (IOException e) {

        logger.error("Error:" , e);
        throw new ResourceException("could not create bitmap");

    }

There isn't anything to compare. Nothing to compare, branches are entirely different commit histories

I solve my issue using these commands

git checkout [BRANCH]   
git branch master [BRANCH] -f   
git checkout master   
git push origin master -f

Disable and enable buttons in C#

Update 2019

This is now IsEnabled

 takePicturebutton.IsEnabled = false; // true

Clone Object without reference javascript

If you use an = statement to assign a value to a var with an object on the right side, javascript will not copy but reference the object.

You can use lodash's clone method

var obj = {a: 25, b: 50, c: 75};
var A = _.clone(obj);

Or lodash's cloneDeep method if your object has multiple object levels

var obj = {a: 25, b: {a: 1, b: 2}, c: 75};
var A = _.cloneDeep(obj);

Or lodash's merge method if you mean to extend the source object

var obj = {a: 25, b: {a: 1, b: 2}, c: 75};
var A = _.merge({}, obj, {newkey: "newvalue"});

Or you can use jQuerys extend method:

var obj = {a: 25, b: 50, c: 75};
var A = $.extend(true,{},obj);

Here is jQuery 1.11 extend method's source code :

jQuery.extend = jQuery.fn.extend = function() {
    var src, copyIsArray, copy, name, options, clone,
        target = arguments[0] || {},
        i = 1,
        length = arguments.length,
        deep = false;

    // Handle a deep copy situation
    if ( typeof target === "boolean" ) {
        deep = target;

        // skip the boolean and the target
        target = arguments[ i ] || {};
        i++;
    }

    // Handle case when target is a string or something (possible in deep copy)
    if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
        target = {};
    }

    // extend jQuery itself if only one argument is passed
    if ( i === length ) {
        target = this;
        i--;
    }

    for ( ; i < length; i++ ) {
        // Only deal with non-null/undefined values
        if ( (options = arguments[ i ]) != null ) {
            // Extend the base object
            for ( name in options ) {
                src = target[ name ];
                copy = options[ name ];

                // Prevent never-ending loop
                if ( target === copy ) {
                    continue;
                }

                // Recurse if we're merging plain objects or arrays
                if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
                    if ( copyIsArray ) {
                        copyIsArray = false;
                        clone = src && jQuery.isArray(src) ? src : [];

                    } else {
                        clone = src && jQuery.isPlainObject(src) ? src : {};
                    }

                    // Never move original objects, clone them
                    target[ name ] = jQuery.extend( deep, clone, copy );

                // Don't bring in undefined values
                } else if ( copy !== undefined ) {
                    target[ name ] = copy;
                }
            }
        }
    }

    // Return the modified object
    return target;
};

Auto refresh code in HTML using meta tags

It looks like you probably pasted this (or used a word processor like MS Word) using a kind of double-quotes that are not recognized by the browser. Please check that your code uses actual double-quotes like this one ", which is different from the following character: ”

Replace the meta tag with this one and try again:

<meta http-equiv="refresh" content="5" >

Create a menu Bar in WPF?

<StackPanel VerticalAlignment="Top">
    <Menu Width="Auto" Height="20">
        <MenuItem Header="_File">
            <MenuItem x:Name="AppExit" Header="E_xit" HorizontalAlignment="Left" Width="140" Click="AppExit_Click"/>
        </MenuItem>
        <MenuItem Header="_Tools">
            <MenuItem x:Name="Options" Header="_Options" HorizontalAlignment="Left" Width="140"/>
        </MenuItem>
        <MenuItem Header="_Help">
            <MenuItem x:Name="About" Header="&amp;About" HorizontalAlignment="Left" Width="140"/>
        </MenuItem>
    </Menu>
    <Label Content="Label"/>
</StackPanel>

Putting images with options in a dropdown list

I found a lot of people recommending ddSlick.js it seems to be a really cool option ! unfortunately it doesnt work as expected for me, maybe I didn't know how to integrate it, today I discovered a library like bootstrap named : MaterialiseCss so I returned to this section to help !!

https://materializecss.com/select.html
https://materializecss.com/dropdown.html

jQuery - How to dynamically add a validation rule

The documentation says:

Adds the specified rules and returns all rules for the first matched element. Requires that the parent form is validated, that is,

> $("form").validate() is called first.

Did you do that? The error message kind of indicates that you didn't.

Any reason to prefer getClass() over instanceof when generating .equals()?

Angelika Langers Secrets of equals gets into that with a long and detailed discussion for a few common and well-known examples, including by Josh Bloch and Barbara Liskov, discovering a couple of problems in most of them. She also gets into the instanceof vs getClass. Some quote from it

Conclusions

Having dissected the four arbitrarily chosen examples of implementations of equals() , what do we conclude?

First of all: there are two substantially different ways of performing the check for type match in an implementation of equals() . A class can allow mixed-type comparison between super- and subclass objects by means of the instanceof operator, or a class can treat objects of different type as non-equal by means of the getClass() test. The examples above illustrated nicely that implementations of equals() using getClass() are generally more robust than those implementations using instanceof .

The instanceof test is correct only for final classes or if at least method equals() is final in a superclass. The latter essentially implies that no subclass must extend the superclass's state, but can only add functionality or fields that are irrelevant for the object's state and behavior, such as transient or static fields.

Implementations using the getClass() test on the other hand always comply to the equals() contract; they are correct and robust. They are, however, semantically very different from implementations that use the instanceof test. Implementations using getClass() do not allow comparison of sub- with superclass objects, not even when the subclass does not add any fields and would not even want to override equals() . Such a "trivial" class extension would for instance be the addition of a debug-print method in a subclass defined for exactly this "trivial" purpose. If the superclass prohibits mixed-type comparison via the getClass() check, then the trivial extension would not be comparable to its superclass. Whether or not this is a problem fully depends on the semantics of the class and the purpose of the extension.

How to create Haar Cascade (.xml file) to use in OpenCV?

How to create CascadeClassifier :

Open this link : https://github.com/opencv/opencv/tree/master/data/haarcascades
Right click on where you find "haarcascade_frontalface_default.xml"
Click on "Save link as"
Save it into the same folder in which your file is.
Include this line in your file face_cascade = cv2.CascadeClassifier(cv2.data.haarcascades + "haarcascade_frontalface_default.xml")

How do you rename a Git tag?

The original question was how to rename a tag, which is easy: first create NEW as an alias of OLD: git tag NEW OLD then delete OLD: git tag -d OLD.

The quote regarding "the Git way" and (in)sanity is off base, because it's talking about preserving a tag name, but making it refer to a different repository state.

How to pass form input value to php function

No, the action should be the name of php file. With on click you may only call JavaScript. And please be aware the hiding your code from the user undermines trust. JS runs on the browser so some trust is needed.

How to run a PowerShell script from a batch file

I explain both why you would want to call a PowerShell script from a batch file and how to do it in my blog post here.

This is basically what you are looking for:

PowerShell -NoProfile -ExecutionPolicy Bypass -Command "& 'C:\Users\SE\Desktop\ps.ps1'"

And if you need to run your PowerShell script as an admin, use this:

PowerShell -NoProfile -ExecutionPolicy Bypass -Command "& {Start-Process PowerShell -ArgumentList '-NoProfile -ExecutionPolicy Bypass -File ""C:\Users\SE\Desktop\ps.ps1""' -Verb RunAs}"

Rather than hard-coding the entire path to the PowerShell script though, I recommend placing the batch file and PowerShell script file in the same directory, as my blog post describes.

Extract public/private key from PKCS12 file for later use in SSH-PK-Authentication

OpenSSH cannot use PKCS#12 files out of the box. As others suggested, you must extract the private key in PEM format which gets you from the land of OpenSSL to OpenSSH. Other solutions mentioned here don’t work for me. I use OS X 10.9 Mavericks (10.9.3 at the moment) with “prepackaged” utilities (OpenSSL 0.9.8y, OpenSSH 6.2p2).

First, extract a private key in PEM format which will be used directly by OpenSSH:

openssl pkcs12 -in filename.p12 -clcerts -nodes -nocerts | openssl rsa > ~/.ssh/id_rsa

I strongly suggest to encrypt the private key with password:

openssl pkcs12 -in filename.p12 -clcerts -nodes -nocerts | openssl rsa -passout 'pass:Passw0rd!' > ~/.ssh/id_rsa

Obviously, writing a plain-text password on command-line is not safe either, so you should delete the last command from history or just make sure it doesn’t get there. Different shells have different ways. You can prefix your command with space to prevent it from being saved to history in Bash and many other shells. Here is also how to delete the command from history in Bash:

history -d $(history | tail -n 2 | awk 'NR == 1 { print $1 }')

Alternatively, you can use different way to pass a private key password to OpenSSL - consult OpenSSL documentation for pass phrase arguments.

Then, create an OpenSSH public key which can be added to authorized_keys file:

ssh-keygen -y -f ~/.ssh/id_rsa > ~/.ssh/id_rsa.pub

Use Font Awesome Icons in CSS

Alternatively, if using Sass, one can "extend" FA icons to display them:

.mytextwithicon:before {
  @extend .fas, .fa-angle-double-right;

  @extend .mr-2; // using bootstrap to add a small gap
                 // between the icon and the text.
}

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

On Debian this was a bind problem for me so changing bind-address from localhost to 0.0.0.0 helped.

vim /etc/mysql/my.cnf

bind-address = 0.0.0.0

How to fix the error "Windows SDK version 8.1" was not found?

Another way (worked for 2015) is open "Install/remove programs" (Apps & features), find Visual Studio, select Modify. In opened window, press Modify, check

Languages -> Visual C++ -> Common tools for Visual C++
Windows and web development -> Tools for universal windows apps -> Tools (1.4.1) and Windows 10 SDK ([version])
Windows and web development -> Tools for universal windows apps -> Windows 10 SDK ([version])

and install. Then right click on solution -> Re-target and it will compile

How to parse JSON response from Alamofire API in Swift?

like above mention you can use SwiftyJSON library and get your values like i have done below

Alamofire.request(.POST, "MY URL", parameters:parameters, encoding: .JSON) .responseJSON
{
    (request, response, data, error) in

var json = JSON(data: data!)

       println(json)   
       println(json["productList"][1])                 

}

my json product list return from script

{ "productList" :[

{"productName" : "PIZZA","id" : "1","productRate" : "120.00","productDescription" : "PIZZA AT 120Rs","productImage" : "uploads\/pizza.jpeg"},

{"productName" : "BURGER","id" : "2","productRate" : "100.00","productDescription" : "BURGER AT Rs 100","productImage" : "uploads/Burgers.jpg"}    
  ]
}

output :

{
  "productName" : "BURGER",
  "id" : "2",
  "productRate" : "100.00",
  "productDescription" : "BURGER AT Rs 100",
  "productImage" : "uploads/Burgers.jpg"
}

How to construct a set out of list items in python?

The most direct solution is this:

s = set(filelist)

The issue in your original code is that the values weren't being assigned to the set. Here's the fixed-up version of your code:

s = set()
for filename in filelist:
    s.add(filename)
print(s)

Email & Phone Validation in Swift

another solution for variety sake..

public extension String {
    public var validPhoneNumber:Bool {
        let types:NSTextCheckingType = [.PhoneNumber]
        guard let detector = try? NSDataDetector(types: types.rawValue) else { return false }

        if let match = detector.matchesInString(self, options: [], range: NSMakeRange(0, characters.count)).first?.phoneNumber {
            return match == self
        }else{
            return false
        }
    }
}

//and use like so:
if "16465551212".validPhoneNumber {
    print("valid phone number")
}

What is the difference between '@' and '=' in directive scope in AngularJS?

Why do I have to use "{{title}}" with '@' and "title" with '='?

When you use {{title}} , only the parent scope value will be passed to directive view and evaluated. This is limited to one way, meaning that change will not be reflected in parent scope. You can use '=' when you want to reflect the changes done in child directive to parent scope also. This is two way.

Can I also access the parent scope directly, without decorating my element with an attribute?

When directive has scope attribute in it ( scope : {} ), then you no longer will be able to access parent scope directly. But still it is possible to access it via scope.$parent etc. If you remove scope from directive, it can be accessed directly.

The documentation says "Often it's desirable to pass data from the isolated scope via an expression and to the parent scope", but that seems to work fine with bidirectional binding too. Why would the expression route be better?

It depends based on context. If you want to call an expression or function with data, you use & and if you want share data , you can use biderectional way using '='

You can find the differences between multiple ways of passing data to directive at below link:

AngularJS – Isolated Scopes – @ vs = vs &

http://www.codeforeach.com/angularjs/angularjs-isolated-scopes-vs-vs

Print array to a file

echo "<pre>: ";      
print_r($this->array_to_return_string($array));
protected function array_to_return_string($param) {
    $str="[";
    if($param){
        foreach ($param as $key => $value) {
            if(is_array($value) && $value){
                $strx=$this->array_to_return_string($value);
                $str.="'$key'=>$strx";
            }else{
                $str.="'$key'=>'$value',";
            }
        }
    }
    $str.="],";
    return $str;
}

Create a .tar.bz2 file Linux

Try this from different folder:

sudo tar -cvjSf folder.tar.bz2 folder/*

Set "Homepage" in Asp.Net MVC

Look at the Default.aspx/Default.aspx.cs and the Global.asax.cs

You can set up a default route:

        routes.MapRoute(
            "Default", // Route name
            "",        // URL with parameters
            new { controller = "Home", action = "Index"}  // Parameter defaults
        );

Just change the Controller/Action names to your desired default. That should be the last route in the Routing Table.

Script for rebuilding and reindexing the fragmented index?

Here is the modified script which i took from http://www.foliotek.com/devblog/sql-server-optimization-with-index-rebuilding which i found useful to post here. Although it uses a cursor and i know what is the main problem with cursors it can be easily converted to a cursor-less version.

It is well-documented and you can easily read through it and modify to your needs.

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

BEGIN TRY
--BEGIN TRAN

use yourdbname

-- Ensure a USE  statement has been executed first.

    SET NOCOUNT ON;

    DECLARE @objectid INT;
    DECLARE @indexid INT;
    DECLARE @partitioncount BIGINT;
    DECLARE @schemaname NVARCHAR(130);
    DECLARE @objectname NVARCHAR(130);
    DECLARE @indexname NVARCHAR(130);
    DECLARE @partitionnum BIGINT;
    DECLARE @partitions BIGINT;
    DECLARE @frag FLOAT;
    DECLARE @pagecount INT;
    DECLARE @command NVARCHAR(4000);

    DECLARE @page_count_minimum SMALLINT
    SET @page_count_minimum = 50

    DECLARE @fragmentation_minimum FLOAT
    SET @fragmentation_minimum = 30.0

-- Conditionally select tables and indexes from the sys.dm_db_index_physical_stats function
-- and convert object and index IDs to names.

    SELECT  object_id AS objectid ,
            index_id AS indexid ,
            partition_number AS partitionnum ,
            avg_fragmentation_in_percent AS frag ,
            page_count AS page_count
    INTO    #work_to_do
    FROM    sys.dm_db_index_physical_stats(DB_ID(), NULL, NULL, NULL,
                                           'LIMITED')
    WHERE   avg_fragmentation_in_percent > @fragmentation_minimum
            AND index_id > 0
            AND page_count > @page_count_minimum;

IF CURSOR_STATUS('global', 'partitions') >= -1
BEGIN
 PRINT 'partitions CURSOR DELETED' ;
    CLOSE partitions
    DEALLOCATE partitions
END
-- Declare the cursor for the list of partitions to be processed.
    DECLARE partitions CURSOR LOCAL
    FOR
        SELECT  *
        FROM    #work_to_do;

-- Open the cursor.
    OPEN partitions;

-- Loop through the partitions.
    WHILE ( 1 = 1 )
        BEGIN;
            FETCH NEXT
FROM partitions
INTO @objectid, @indexid, @partitionnum, @frag, @pagecount;

            IF @@FETCH_STATUS < 0
                BREAK;

            SELECT  @objectname = QUOTENAME(o.name) ,
                    @schemaname = QUOTENAME(s.name)
            FROM    sys.objects AS o
                    JOIN sys.schemas AS s ON s.schema_id = o.schema_id
            WHERE   o.object_id = @objectid;

            SELECT  @indexname = QUOTENAME(name)
            FROM    sys.indexes
            WHERE   object_id = @objectid
                    AND index_id = @indexid;

            SELECT  @partitioncount = COUNT(*)
            FROM    sys.partitions
            WHERE   object_id = @objectid
                    AND index_id = @indexid;

            SET @command = N'ALTER INDEX ' + @indexname + N' ON '
                + @schemaname + N'.' + @objectname + N' REBUILD';

            IF @partitioncount > 1
                SET @command = @command + N' PARTITION='
                    + CAST(@partitionnum AS NVARCHAR(10));

            EXEC (@command);
            --print (@command); //uncomment for testing

            PRINT N'Rebuilding index ' + @indexname + ' on table '
                + @objectname;
            PRINT N'  Fragmentation: ' + CAST(@frag AS VARCHAR(15));
            PRINT N'  Page Count:    ' + CAST(@pagecount AS VARCHAR(15));
            PRINT N' ';
        END;

-- Close and deallocate the cursor.
    CLOSE partitions;
    DEALLOCATE partitions;

-- Drop the temporary table.
    DROP TABLE #work_to_do;
--COMMIT TRAN

END TRY
BEGIN CATCH
--ROLLBACK TRAN
    PRINT 'ERROR ENCOUNTERED:' + ERROR_MESSAGE()
END CATCH

How to get a substring of text?

Since you tagged it Rails, you can use truncate:

http://api.rubyonrails.org/classes/ActionView/Helpers/TextHelper.html#method-i-truncate

Example:

 truncate(@text, :length => 17)

Excerpt is nice to know too, it lets you display an excerpt of a text Like so:

 excerpt('This is an example', 'an', :radius => 5)
 # => ...s is an exam...

http://api.rubyonrails.org/classes/ActionView/Helpers/TextHelper.html#method-i-excerpt

What is lazy loading in Hibernate?

Lazy fetching decides whether to load child objects while loading the Parent Object. You need to do this setting respective hibernate mapping file of the parent class. Lazy = true (means not to load child) By default the lazy loading of the child objects is true.

This make sure that the child objects are not loaded unless they are explicitly invoked in the application by calling getChild() method on parent.In this case hibernate issues a fresh database call to load the child when getChild() is actully called on the Parent object.

But in some cases you do need to load the child objects when parent is loaded. Just make the lazy=false and hibernate will load the child when parent is loaded from the database.

Example : If you have a TABLE ? EMPLOYEE mapped to Employee object and contains set of Address objects. Parent Class : Employee class, Child class : Address Class

public class Employee { 
private Set address = new HashSet(); // contains set of child Address objects 
public Set getAddress () { 
return address; 
} 
public void setAddresss(Set address) { 
this. address = address; 
} 
}

In the Employee.hbm.xml file

<set name="address" inverse="true" cascade="delete" lazy="false"> 
<key column="a_id" /> 
<one-to-many class="beans Address"/> 
</set>

In the above configuration. If lazy="false" : - when you load the Employee object that time child object Address is also loaded and set to setAddresss() method. If you call employee.getAdress() then loaded data returns.No fresh database call.

If lazy="true" :- This the default configuration. If you don?t mention then hibernate consider lazy=true. when you load the Employee object that time child object Adress is not loaded. You need extra call to data base to get address objects. If you call employee.getAdress() then that time database query fires and return results. Fresh database call.

How to get the first five character of a String

The problem with .Substring(,) is, that you need to be sure that the given string has at least the length of the asked number of characters, otherwise an ArgumentOutOfRangeException will be thrown.

Solution 1 (using 'Substring'):

var firstFive = stringValue != null ? 
                   stringValue.Substring(0, stringValue.Length >= 5 ? 5 : stringValue.Length) :
                   null;

The drawback of using .Substring( is that you'll need to check the length of the given string.

Solution 2 (using 'Take'):

var firstFive = stringValue != null ? 
                    string.Join("", stringValue.Take(5)) : 
                    null;

Using 'Take' will prevent that you need to check the length of the given string.

General error: 1364 Field 'user_id' doesn't have a default value

Try using `Auth::id()`, like

Post::create([ 'body' => request('body'), 'title' => request('title'), 'user_id' => Auth::id()]);

also remember to include Auth facade at top of your controller which is App\Http\Controllers\Auth

Cocoa Autolayout: content hugging vs content compression resistance priority

Take a look at this video tutorial about Autolayout, they explain it carefully

enter image description here

Add data to JSONObject

The answer is to use a JSONArray as well, and to dive "deep" into the tree structure:

JSONArray arr = new JSONArray();
arr.put (...); // a new JSONObject()
arr.put (...); // a new JSONObject()

JSONObject json = new JSONObject();
json.put ("aoColumnDefs",arr);

Copy files from one directory into an existing directory

cp dir1/* dir2

Or if you have directories inside dir1 that you'd want to copy as well

cp -r dir1/* dir2

How can I generate random number in specific range in Android?

Random r = new Random();
int i1 = r.nextInt(80 - 65) + 65;

This gives a random integer between 65 (inclusive) and 80 (exclusive), one of 65,66,...,78,79.

How to suppress Update Links warning?

I've found a temporary solution that will at least let me process this job. I wrote a short AutoIt script that waits for the "Update Links" window to appear, then clicks the "Don't Update" button. Code is as follows:

while 1
if winexists("Microsoft Excel","This workbook contains links to other data sources.") Then
   controlclick("Microsoft Excel","This workbook contains links to other data sources.",2)
EndIf
WEnd

So far this seems to be working. I'd really like to find a solution that's entirely VBA, however, so that I can make this a standalone application.

How to execute a shell script on a remote server using Ansible?

you can use script module

Example

- name: Transfer and execute a script.
  hosts: all
  tasks:

     - name: Copy and Execute the script 
       script: /home/user/userScript.sh

Detect whether current Windows version is 32 bit or 64 bit

From a batch script:

IF PROCESSOR_ARCHITECTURE == x86 AND
   PROCESSOR_ARCHITEW6432 NOT DEFINED THEN
   // OS is 32bit
ELSE
   // OS is 64bit
END IF

Using Windows API:

if (GetSystemWow64Directory(Directory, MaxDirectory) > 0) 
   // OS is 64bit
else
   // OS is 32bit

Sources:

In CSS how do you change font size of h1 and h2

h1 {
  font-weight: bold;
  color: #fff;
  font-size: 32px;
}

h2 {
  font-weight: bold;
  color: #fff;
  font-size: 24px;
}

Note that after color you can use a word (e.g. white), a hex code (e.g. #fff) or RGB (e.g. rgb(255,255,255)) or RGBA (e.g. rgba(255,255,255,0.3)).

Extracting an attribute value with beautifulsoup

Here is an example for how to extract the href attrbiutes of all a tags:

import requests as rq 
from bs4 import BeautifulSoup as bs

url = "http://www.cde.ca.gov/ds/sp/ai/"
page = rq.get(url)
html = bs(page.text, 'lxml')

hrefs = html.find_all("a")
all_hrefs = []
for href in hrefs:
    # print(href.get("href"))
    links = href.get("href")
    all_hrefs.append(links)

print(all_hrefs)

XML Schema Validation : Cannot find the declaration of element

The targetNamespace of your XML Schema does not match the namespace of the Root element (dot in Test.Namespace vs. comma in Test,Namespace)

Once you make the above agree, you have to consider that your element2 has an attribute order that is not in your XSD.

How to read a .xlsx file using the pandas Library in iPython?

pd.read_excel(file_name)

sometimes this code gives an error for xlsx files as: XLRDError:Excel xlsx file; not supported

instead , you can use openpyxl engine to read excel file.

df_samples = pd.read_excel(r'filename.xlsx', engine='openpyxl')

It worked for me

how to remove empty strings from list, then remove duplicate values from a list

To simplify Amiram Korach's solution:

dtList.RemoveAll(s => string.IsNullOrWhiteSpace(s))

No need to use Distinct() or ToList()

Intellij idea subversion checkout error: `Cannot run program "svn"`

Basically, what IntelliJ needs is svn.exe. You will need to install Subversion for Windows. It automatically adds svn.exe to PATH environment variable. After installing, please restart IntelliJ.

Note - Tortoise SVN doesn't install svn.exe, at least I couldn't find it in my TortoiseSVN bin directory.

Not Equal to This OR That in Lua

For testing only two values, I'd personally do this:

if x ~= 0 and x ~= 1 then
    print( "X must be equal to 1 or 0" )
    return
end

If you need to test against more than two values, I'd stuff your choices in a table acting like a set, like so:

choices = {[0]=true, [1]=true, [3]=true, [5]=true, [7]=true, [11]=true}

if not choices[x] then
    print("x must be in the first six prime numbers")
    return
end

md-table - How to update the column width

You can also add the styling directly in the markup if you desire so:

<ng-container matColumnDef="Edit">
     <th mat-header-cell *matHeaderCellDef > Edit </th>
     <td mat-cell *matCellDef="let element" (click)="openModal()" style="width: 50px;"> <i class="fa fa-pencil" aria-hidden="true"></i> </td>
</ng-container>

Different font size of strings in the same TextView

The best way to do that is Html without substring your text and fully dynamique For example :

  public static String getTextSize(String text,int size) {
         return "<span style=\"size:"+size+"\" >"+text+"</span>";

    }

and you can use color attribut etc... if the other hand :

size.setText(Html.fromHtml(getTextSize(ls.numProducts,100) + " " + mContext.getString(R.string.products));

DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss") is returning AM time instead of PM time?

Use HH for 24 hour hours format:

DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")

Or the tt format specifier for the AM/PM part:

DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss tt")

Take a look at the custom Date and Time format strings documentation.

printf with std::string?

Please don't use printf("%s", your_string.c_str());

Use cout << your_string; instead. Short, simple and typesafe. In fact, when you're writing C++, you generally want to avoid printf entirely -- it's a leftover from C that's rarely needed or useful in C++.

As to why you should use cout instead of printf, the reasons are numerous. Here's a sampling of a few of the most obvious:

As the question shows, printf isn't type-safe. If the type you pass differs from that given in the conversion specifier, printf will try to use whatever it finds on the stack as if it were the specified type, giving undefined behavior. Some compilers can warn about this under some circumstances, but some compilers can't/won't at all, and none can under all circumstances.
printf isn't extensible. You can only pass primitive types to it. The set of conversion specifiers it understands is hard-coded in its implementation, and there's no way for you to add more/others. Most well-written C++ should use these types primarily to implement types oriented toward the problem being solved.
It makes decent formatting much more difficult. For an obvious example, when you're printing numbers for people to read, you typically want to insert thousands separators every few digits. The exact number of digits and the characters used as separators varies, but cout has that covered as well. For example:
```
std::locale loc("");
std::cout.imbue(loc);

std::cout << 123456.78;
```
The nameless locale (the "") picks a locale based on the user's configuration. Therefore, on my machine (configured for US English) this prints out as 123,456.78. For somebody who has their computer configured for (say) Germany, it would print out something like 123.456,78. For somebody with it configured for India, it would print out as 1,23,456.78 (and of course there are many others). With printf I get exactly one result: 123456.78. It is consistent, but it's consistently wrong for everybody everywhere. Essentially the only way to work around it is to do the formatting separately, then pass the result as a string to printf, because printf itself simply will not do the job correctly.
Although they're quite compact, printf format strings can be quite unreadable. Even among C programmers who use printf virtually every day, I'd guess at least 99% would need to look things up to be sure what the # in %#x means, and how that differs from what the # in %#f means (and yes, they mean entirely different things).

The application was unable to start correctly (0xc000007b)

It is a missing dll. Possibly, your dll that works with com ports have an unresolved dll dependence. You can use dependency walker and windows debugger. Check all of the mfc library, for example. Also, you can use nrCommlib - it is great components to work with com ports.

Can Google Chrome open local links?

You can't link to file:/// from an HTML document that is not itself a file:/// for security reasons.

How can I align text in columns using Console.WriteLine?

There're several NuGet packages which can help with formatting. In some cases the capabilities of string.Format are enough, but you may want to auto-size columns based on content, at least.

ConsoleTableExt

ConsoleTableExt is a simple library which allows formatting tables, including tables without grid lines. (A more popular package ConsoleTables doesn't seem to support borderless tables.) Here's an example of formatting a list of objects with columns sized based on their content:

ConsoleTableBuilder
    .From(orders
        .Select(o => new object[] {
            o.CustomerName,
            o.Sales,
            o.Fee,
            o.Value70,
            o.Value30
        })
        .ToList())
    .WithColumn(
        "Customer",
        "Sales",
        "Fee",
        "70% value",
        "30% value")
    .WithFormat(ConsoleTableBuilderFormat.Minimal)
    .WithOptions(new ConsoleTableBuilderOption { DividerString = "" })
    .ExportAndWriteLine();

CsConsoleFormat

If you need more features than that, any console formatting can be achieved with CsConsoleFormat.† For example, here's formatting of a list of objects as a grid with fixed column width of 10, like in the other answers using string.Format:

ConsoleRenderer.RenderDocument(
    new Document { Color = ConsoleColor.Gray }
        .AddChildren(
            new Grid { Stroke = LineThickness.None }
                .AddColumns(10, 10, 10, 10, 10)
                .AddChildren(
                    new Div("Customer"),
                    new Div("Sales"),
                    new Div("Fee"),
                    new Div("70% value"),
                    new Div("30% value"),
                    orders.Select(o => new object[] {
                        new Div().AddChildren(o.CustomerName),
                        new Div().AddChildren(o.Sales),
                        new Div().AddChildren(o.Fee),
                        new Div().AddChildren(o.Value70),
                        new Div().AddChildren(o.Value30)
                    })
                )
        ));

It may look more complicated than pure string.Format, but now it can be customized. For example:

If you want to auto-size columns based on content, replace AddColumns(10, 10, 10, 10, 10) with AddColumns(-1, -1, -1, -1, -1) (-1 is a shortcut to GridLength.Auto, you have more sizing options, including percentage of console window's width).
If you want to align number columns to the right, add { Align = Right } to a cell's initializer.
If you want to color a column, add { Color = Yellow } to a cell's initializer.
You can change border styles and more.

_{† CsConsoleFormat was developed by me.}

Changing background colour of tr element on mouseover

<tr>s themselves are very hard to access with CSS, try tr:hover td {background:#000}

PHP Function with Optional Parameters

You can just set the default value to null.

<?php
function functionName($value, $value2 = null) {
// do stuff
}

How do I redirect in expressjs while passing some context?

You can pass small bits of key/value pair data via the query string:

res.redirect('/?error=denied');

And javascript on the home page can access that and adjust its behavior accordingly.

Note that if you don't mind /category staying as the URL in the browser address bar, you can just render directly instead of redirecting. IMHO many times people use redirects because older web frameworks made directly responding difficult, but it's easy in express:

app.post('/category', function(req, res) {

  // Process the data received in req.body

  res.render('home.jade', {error: 'denied'});
});

As @Dropped.on.Caprica commented, using AJAX eliminates the URL changing concern.

Using form input to access camera and immediately upload photos using web app

It's really easy to do this, simply send the file via an XHR request inside of the file input's onchange handler.

<input id="myFileInput" type="file" accept="image/*;capture=camera">

var myInput = document.getElementById('myFileInput');

function sendPic() {
    var file = myInput.files[0];

    // Send file here either by adding it to a `FormData` object 
    // and sending that via XHR, or by simply passing the file into 
    // the `send` method of an XHR instance.
}

myInput.addEventListener('change', sendPic, false);

Detect if a jQuery UI dialog box is open

If you read the docs.

$('#mydialog').dialog('isOpen')

This method returns a Boolean (true or false), not a jQuery object.

What is the default value for Guid?

You can use Guid.Empty. It is a read-only instance of the Guid structure with the value of 00000000-0000-0000-0000-000000000000

you can also use these instead

var g = new Guid();
var g = default(Guid);

beware not to use Guid.NewGuid() because it will generate a new Guid.

use one of the options above which you and your team think it is more readable and stick to it. Do not mix different options across the code. I think the Guid.Empty is the best one since new Guid() might make us think it is generating a new guid and some may not know what is the value of default(Guid).

Python re.sub(): how to substitute all 'u' or 'U's with 'you'

This worked for me:

    import re
    text = 'how are u? umberella u! u. U. U@ U# u '
    rex = re.compile(r'\bu\b', re.IGNORECASE)
    print(rex.sub('you', text))

It pre-compiles the regular expression and makes use of re.IGNORECASE so that we don't have to worry about case in our regular expression! BTW, I love the funky spelling of umbrella! :-)

Programs & Examples On #Id generation

How to choose the id generation strategy when using JPA and Hibernate

What is the best way to delete a value from an array in Perl?

Receiving "Attempted import error:" in react app

Node / Express: EADDRINUSE, Address already in use - Kill server

Accessing nested JavaScript objects and arrays by string path

window.location.reload with clear cache

Remove all elements contained in another array

phpmyadmin - count(): Parameter must be an array or an object that implements Countable

Keep Reading!

What is the correct way to read from NetworkStream in .NET

Prevent wrapping of span or div

Display all items in array using jquery

Angular routerLink does not navigate to the corresponding component

How to install Selenium WebDriver on Mac OS

Running JAR file on Windows 10

Add padding to HTML text input field

How to add jQuery code into HTML Page

Return row of Data Frame based on value in a column - R

Re-assign host access permission to MySQL user

How do you create a toggle button?

Oracle's default date format is YYYY-MM-DD, WHY?

Git - What is the difference between push.default "matching" and "simple"

Git v2.0 Release Notes

Backward compatibility notes

Android: How to programmatically access the device serial number shown in the AVD manager (API Version 8)

printf formatting (%d versus %u)

Add an incremental number in a field in INSERT INTO SELECT query in SQL Server

Specifying colClasses in the read.csv

How do I correctly upgrade angular 2 (npm) to the latest version?

asp:TextBox ReadOnly=true or Enabled=false?

How to send email from Terminal?

Convert a Unix timestamp to time in JavaScript

How do I fix a "Performance counter registry hive consistency" when installing SQL Server R2 Express?

How can I determine the sector size in windows?

HTML: Select multiple as dropdown

What are the benefits of using C# vs F# or F# vs C#?

How To Set Up GUI On Amazon EC2 Ubuntu server

What is the best way to tell if a character is a letter or number in Java without using regexes?

Installing SQL Server 2012 - Error: Prior Visual Studio 2010 instances requiring update

Root password inside a Docker container

How to send image to PHP file using Ajax?

jQuery function to open link in new window

How to read the content of a file to a string in C?

startsWith() and endsWith() functions in PHP

Full screen background image in an activity

How to uncheck checkbox using jQuery Uniform library

How to detect online/offline event cross-browser?

Get output parameter value in ADO.NET

Find and replace words/lines in a file

How to change the foreign key referential action? (behavior)

The object 'DF__*' is dependent on column '*' - Changing int to double

How do I use Access-Control-Allow-Origin? Does it just go in between the html head tags?

How to make custom error pages work in ASP.NET MVC 4

How can I remove all my changes in my SVN working directory?

How to restart a windows service using Task Scheduler

How to copy sheets to another workbook using vba?

Creating virtual directories in IIS express

Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?

How to make graphics with transparent background in R using ggplot2?

When is a language considered a scripting language?

SQL: IF clause within WHERE clause

Android Studio don't generate R.java for my import project

How to show changed file name only with git log?

How to delete all records from table in sqlite with Android?

How do I prevent CSS inheritance?

Online PHP syntax checker / validator

SQLAlchemy equivalent to SQL "LIKE" statement

What is the Python equivalent for a case/switch statement?

How does the JPA @SequenceGenerator annotation work

Call a url from javascript

Android Relative Layout Align Center

Spring CORS No 'Access-Control-Allow-Origin' header is present

Foreign key constraint may cause cycles or multiple cascade paths?

Generate a sequence of numbers in Python

How to list all AWS S3 objects in a bucket using Java

How to compare two java objects

How to remove a web site from google analytics

How do Python's any and all functions work?

Eclipse - "Workspace in use or cannot be created, chose a different one."

The object 'DF__' is dependent on column '' - Changing int to double

Notes on `threading` module