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Algorithm to return all combinations of k elements from n

...rs covering the topic: An Efficient Implementation of the Eades, Hickey, Read Adjacent Interchange Combination Generation Algorithm (PDF, with code in Pascal) Combination Generators Survey of Combinatorial Gray Codes (PostScript) An Algorithm for Gray Codes Chase's Twiddle (algorithm) Phillip J...
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How to fix getImageData() error The canvas has been tainted by cross-origin data?

...local files as being on a different domain, otherwise website owners could read your local files. You need to request images from the same domain, or the headers in the response to your request need to tell the browser that it's okay for code from other domains to read that file. ...
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Is the VC++ code DOM accessible from VS addons?

... possible, I just don't know how, yet. The CppLister extension is able to read the intellisense databases created by VS to list the various members within a class. You can always use the open source Clang C++ parser (actually compiler) and read the AST into a C# Object Model. See CppSharp and Clan...
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Add a dependency in Maven

... K.I.S.S. Thank you, I read that this is the C# Nuget equivalent in Java but I was trying to figure out what button to click or cmd to run. Not exactly a 1:1 but does the job. – Terrance May 8 '15 at 17:54 ...
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Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?

... @CharlesBretana: if you read the rest of the sentence you quoted, you will find the exact explanation you are requesting. – chaos Feb 17 '16 at 16:07 ...
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Percentage Height HTML 5/CSS

...utes to figure out I had to set the height of the document to 100%, too. I read this a bit too late, but it's very brilliant, still. sigh – omninonsense Dec 30 '11 at 14:41 ...
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System.Threading.Timer in C# it seems to be not working. It runs very fast every 3 second

... This is not the correct usage of the System.Threading.Timer. When you instantiate the Timer, you should almost always do the following: _timer = new Timer( Callback, null, TIME_INTERVAL_IN_MILLISECONDS, Timeout.Infinite ); This will instruct the timer to tick only onc...
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What does 'const static' mean in C and C++?

...r bss segment depending on the architecture, and might be in memory marked read-only. All that is how C treats these variables (or how C++ treats namespace variables). In C++, a member marked static is shared by all instances of a given class. Whether it's private or not doesn't affect the fact tha...
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Why .NET String is immutable? [duplicate]

... Instances of immutable types are inherently thread-safe, since no thread can modify it, the risk of a thread modifying it in a way that interferes with another is removed (the reference itself is a different matter). Similarly, the fact that aliasing can't produce change...
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What are some (concrete) use-cases for metaclasses?

...ecently, and came up with several answers. I hope it's OK to revive this thread, as I wanted to elaborate on a few of the use cases mentioned, and add a few new ones. Most metaclasses I've seen do one of two things: Registration (adding a class to a data structure): models = {} class ModelMetac...