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Do HTML WebSockets maintain an open connection for each client? Does this scale?

...end on how well the current AJAX/long-poll model is working. The effort to convert will be non-trivial so in many cases the cost just won't be worth the benefit. Update: Useful link: 600k concurrent websocket connections on AWS using Node.js ...
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With arrays, why is it the case that a[5] == 5[a]?

...or) is equivalent to i[p]. (And in array[i], the array name is implicitly converted to a pointer to the array's first element.) But the commutativity of addition is not all that obvious in this case. When both operands are of the same type, or even of different numeric types that are promoted to ...
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How can I programmatically generate keypress events in C#?

... when I tried the first code of keydown I got error in "target" can't convert it to visual why? – kartal Aug 26 '10 at 7:12 3 ...
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Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c

...et('clientId')); }); ga('send', 'pageview'); Also check out this code at Convert Google Analytics cookies to Local/Session Storage This script will not set any cookies, but still track via google analytics. This will actually have the same effect on privacy as using cookies, because google still ...
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When should I really use noexcept?

...not happen at the level of generating machine code by the compiler, but by selecting the most effective algorithm: as others mentioned, you do this selection using function std::move_if_noexcept. For instance, the growth of std::vector (e.g., when we call reserve) must provide a strong exception-saf...
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Async image loading from url inside a UITableView cell - image changes to wrong image while scrollin

...ta = data if error == nil { // Convert the downloaded data in to a UIImage object let image = UIImage(data: data!) // Store the image in to our cache self.previewImg[indexPath.row] = d...
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How is “int* ptr = int()” value initialization not illegal?

...o zero or a prvalue of type std::nullptr_t. A null pointer constant can be converted to a pointer type; the result is the null pointer value of that type and is distinguishable from every other value of object pointer or function pointer type. Such a conversion is called a null pointer conversion. [...
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Why use static_cast(x) instead of (int)x?

... = static_cast<CMyOtherStuff*>(pSomething); // Compiler error: Can't convert pOther = (CMyOtherStuff*)(pSomething); // No compiler error. // Same as reinterpret_cast<> // and i...
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How to concatenate two MP4 files using FFmpeg?

...eg. I need this to be an automatic process hence why I chose ffmpeg. I'm converting the two files into .ts files and then concatenating them and then trying to encode that concated .ts file. The files are h264 and aac encoded and I'm hoping to keep the quality the same or as close to original as ...
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Do python projects need a MANIFEST.in, and what should be in it?

... @Ame I agree, things moved on. Currently I am converting most my projects from pbr to poetry – Jan Vlcinsky Dec 28 '18 at 0:57 ...