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What is the difference between AF_INET and PF_INET in socket programming?

... to do is to use AF_INET in your struct sockaddr_in and PF_INET in your call to socket(). But practically speaking, you can use AF_INET everywhere. And, since that's what W. Richard Stevens does in his book, that's what I'll do here. ...
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How to “properly” create a custom object in JavaScript?

...e result is that in mixed company you will have a mishmash of metaclasses, all behaving slightly differently. What's worse, most JavaScript tutorial material is terrible and serves up some kind of in-between compromise to cover all bases, leaving you very confused. (Probably the author is also confu...
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How can I check if a Perl array contains a particular value?

...For the record, this code still does iterate through the array. The map{} call simply makes that iteration very easy to type. – Kenny Wyland Mar 3 '12 at 23:09 3 ...
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What is the best way to stop people hacking the PHP-based highscore table of a Flash game

...e key encryptions and high score postings throughout the binary. This is all mostly a waste of time. It goes without saying, SSL isn't going to help you either; SSL can't protect you when one of the two SSL endpoints is evil. Here are some things that can actually reduce high score fraud: Requi...
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Does this app use the Advertising Identifier (IDFA)? - AdMob 6.8.0

...it Ad Tracking. Including Limit Ad Tracking. This is what the last box is all about. So you must check the that box if you use AdMob. If you use other SDK I strongly recommend checking if they respect the guidelines as well. Since I run only ads (Google AdMob), I checked the first (Serve ads...) a...
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Is there a Python equivalent of the C# null-coalescing operator?

In C# there's a null-coalescing operator (written as ?? ) that allows for easy (short) null checking during assignment: ...
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Changing the default header comment license in Xcode

...sier to just modify the 'organisation name'. It works across the board for all the templates. For anyone who is interested see my answer below. – Eric Brotto Feb 19 '11 at 17:48 ...
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Make a borderless form movable?

... This article on CodeProject details a technique. Is basically boils down to: public const int WM_NCLBUTTONDOWN = 0xA1; public const int HT_CAPTION = 0x2; [System.Runtime.InteropServices.DllImport("user32.dll")] public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam...
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Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.

...ernel def require_relative(path) require File.join(File.dirname(caller[0]), path.to_str) end end end This allows you to use require_relative as you would in ruby 1.9.2 in ruby 1.8 and 1.9.1. share ...
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Loop through an array of strings in Bash?

... Note that the double quotes around "${arr[@]}" are really important. Without them, the for loop will break up the array by substrings separated by any spaces within the strings instead of by whole string elements within the array. ie: if you had declare -a arr=("element 1" "ele...