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Difference between single and double quotes in Bash

... Enclosing characters in double quotes (") preserves the literal value of all characters within the quotes, with the exception of $, `, \, and, when history expansion is enabled, !. The characters $ and ` retain their special meaning within double quotes (see Shell Expansions). The backslash retain...
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Make a link use POST instead of GET

...aScript, with no jQuery — you could choose this if you don't want to install anything more than you already have. <form name="myform" action="handle-data.php" method="post"> <label for="query">Search:</label> <input type="text" name="query" id="query"/> <button&gt...
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Merging objects (associative arrays)

... with jquery you can call $.extend var obj1 = {a: 1, b: 2}; var obj2 = {a: 4, c: 110}; var obj3 = $.extend(obj1, obj2); obj1 == obj3 == {a: 4, b: 2, c: 110} // Pseudo JS (assoc. arrays are objects in js) look here: http://api.jquery.com/jQu...
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Concurrent HashSet in .NET Framework?

...ass. private ConcurrentBag<string> _data; Self-implementation Finally, as you did, you can implement your own data type, using lock or other ways that the .NET provides you to be thread-safe. Here is a great example: How to implement ConcurrentHashSet in .Net The only drawback of this sol...
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How to get Url Hash (#) from server side

...e with .ClientID but we found it simpler to just use the wrapper DIV as it allows all this Javascript to live in an external file and be used in a generic fashion. If the hidden input field has a valid value, set that as the URL hash (window.location.hash again) and/or perform other actions. We us...
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Get the full URL in PHP

...VER_ADDR"] ???? 143.34.112.23 $_SERVER["SERVER_PORT"] ???? 80(or 443 etc..) $_SERVER["REQUEST_SCHEME"] ???? https //similar: $_SERVER["SERVER_PROTOCOL"] $_SERVER['HTTP_HOST'] ???? example.com (or with WWW) //similar: $_SERVER["E...
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Center HTML Input Text Field Placeholder

... input{ text-align:center; } is all you need. Working example in FF6. This method doesn't seem to be cross-browser compatible. Your previous CSS was attempting to center the text of an input element which had a class of "placeholder". ...
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How to create an AVD for Android 4.0

...nload the AVD Manager that is external to eclipse and says you have it installed, you have to go into eclipse with the AVD Plugin and re-install it as well. Have to 2 it twice. I ran into this error when going through the setup steps even though I had the ARM EABI installed external from eclipse. ...
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Using jquery to get element's position relative to viewport

... Look into the Dimensions plugin, specifically scrollTop()/scrollLeft(). Information can be found at http://api.jquery.com/scrollTop. share | improve this answer ...
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How to copy an object in Objective-C

...deep, logical copy. In this, we make a copy of the object, but without actually doing it bit by bit - we want an object that behaves the same for all intents and purposes, but isn't (necessarily) a memory-identical clone of the original - the Objective C manual calls such an object "functionally ind...