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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 write a large buffer into a binary file in C++, fast?

... Try the following, in order: Smaller buffer size. Writing ~2 MiB at a time might be a good start. On my last laptop, ~512 KiB was the sweet spot, but I haven't tested on my SSD yet. Note: I've noticed that very large buffers tend to decrease performance. ...
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jQuery .scrollTop(); + animation

... To do this, you can set a callback function for the animate command which will execute after the scroll animation has finished. For example: var body = $("html, body"); body.stop().animate({scrollTop:0}, 500, 'swing', function() { alert("Finished...
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What is the _snowman param in Ruby on Rails 3 forms for?

...net Explorer (5, 6, 7 and 8) to encode its parameters as unicode. Specifically, this bug can be triggered if the user switches the browser's encoding to Latin-1. To understand why a user would decide to do something seemingly so crazy, check out this google search. Once the user has put the web-sit...
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Batch File; List files in directory, only filenames?

...s is probably a very simple question, but I'm having trouble with it. Basically, I am trying to write a Batch File and I need it to list all the files in a certain directory. The dir command will do this, but it also gives a bunch of other information; I want it to list ONLY the file names and e...
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In-memory size of a Python structure

... Yep. The "4 higher" actually mostly look like "rounding up to a multiple of 8" which I believe is correct for the way malloc behaves here. No idea why decimal gets so distorted (with pympler on 2.6, too). – Alex Martelli ...
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What is the most accurate way to retrieve a user's correct IP address in PHP?

.... In a few minutes I will update the code. – Corey Ballou Jan 9 '10 at 13:37 35 -1 this is vulne...
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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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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...
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What is the size of an enum in C?

...set of enum values, but I need each enum value to be 64 bits wide. If I recall correctly, an enum is generally the same size as an int; but I thought I read somewhere that (at least in GCC) the compiler can make the enum any width they need to be to hold their values. So, is it possible to have an e...