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Get local IP address

....ToString(); } } throw new Exception("No network adapters with an IPv4 address in the system!"); } To check if you're connected or not: System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable(); ...
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Attaching click event to a JQuery object not yet added to the DOM [duplicate]

... lot of trouble attaching the click event to a JQuery object before adding it to the DOM. 10 Answers ...
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Why the switch statement cannot be applied on strings?

... The reason why has to do with the type system. C/C++ doesn't really support strings as a type. It does support the idea of a constant char array but it doesn't really fully understand the notion of a string. In order to generate the code for a sw...
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How do I make an html link look like a button?

...ped by anchors, i.e. tags, but I don't want to have to fire up an image editor every time I change the text on a button. 2...
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What reason is there to use null instead of undefined in JavaScript?

I've been writing JavaScript for quite a long time now, and I have never had a reason to use null . It seems that undefined is always preferable and serves the same purpose programmatically. What are some practical reasons to use null instead of undefined ? ...
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how to deal with google map inside of a hidden div (Updated picture)

... Just tested it myself and here's how I approached it. Pretty straight forward, let me know if you need any clarification HTML <div id="map_canvas" style="width:700px; height:500px; margin-left:80px;" ></div> <button oncl...
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What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?

... Running a command through /usr/bin/env has the benefit of looking for whatever the default version of the program is in your current environment. This way, you don't have to look for it in a specific place on the system, as those paths may be in different locations on differe...
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What is the difference between is_a and instanceof?

... Update As of PHP 5.3.9, the functionality of is_a() has changed. The original answer below states that is_a() must accept an Object as the first argument, but PHP versions >= 5.3.9 now accept an optional third boolean argument $allow_string (defaults to false)...
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What's the safest way to iterate through the keys of a Perl hash?

If I have a Perl hash with a bunch of (key, value) pairs, what is the preferred method of iterating through all the keys? I have heard that using each may in some way have unintended side effects. So, is that true, and is one of the two following methods best, or is there a better way? ...
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*.h or *.hpp for your class definitions

I've always used a *.h file for my class definitions, but after reading some boost library code, I realised they all use *.hpp . I've always had an aversion to that file extension, I think mainly because I'm not used to it. ...