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C++ valarray vs. vector

...easy way although that part of the standard could use a bit more work. Resizing them is destructive and they lack iterators. So, if it's numbers you are working with and convenience isn't all that important use valarrays. Otherwise, vectors are just a lot more convenient. ...
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C++ preprocessor __VA_ARGS__ number of arguments

...ckCat 37k55 gold badges6464 silver badges101101 bronze badges answered Jan 23 '10 at 19:22 Kornel KisielewiczKornel Kisielewicz 49...
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How to print binary tree diagram?

...ry tree printer. You can use and modify it as you want, but it's not optimized anyway. I think that a lot of things can be improved here ;) import java.util.ArrayList; import java.util.Collections; import java.util.List; public class BTreePrinterTest { private static Node<Integer> test1...
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Conditional Variable vs Semaphore

... the mutual exclusion provide by locks and are used for providing synchronized access to shared resources. They can be used for similar purposes. A condition variable is generally used to avoid busy waiting (looping repeatedly while checking a condition) while waiting for a resource to become av...
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What is the most ridiculous pessimization you've seen? [closed]

We all know that premature optimization is the root of all evil because it leads to unreadable/unmaintainable code. Even worse is pessimization, when someone implements an "optimization" because they think it will be faster, but it ends up being slower, as well as being buggy, unmaintainable, etc...
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What is object slicing?

...ceBru 32k1010 gold badges4949 silver badges7272 bronze badges answered Nov 8 '08 at 11:22 David DibbenDavid Dibben 16.2k66 gold ba...
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What are JavaScript's builtin strings?

this question is difficult to summarize in a question title 7 Answers 7 ...
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Is there a way to detect if a browser window is not currently active?

...nt.addEventListener("visibilitychange", onchange); else if ((hidden = "mozHidden") in document) document.addEventListener("mozvisibilitychange", onchange); else if ((hidden = "webkitHidden") in document) document.addEventListener("webkitvisibilitychange", onchange); else if ((hidden = ...
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android splash screen sizes for ldpi,mdpi, hdpi, xhdpi displays ? - eg : 1024X768 pixels for ldpi

...hile loading) for android application using phonegap. I have to design 4 size images that fit for 4types of screens like ldpi, mdpi , hdpi, xhdpi . Can anyone tell me exact sizes in pixels for these screens so I can design in that size ? ...
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How to watch for array changes?

...ice() methods as well as custom index accessors (provided that the array size is only modified via one of the aforementioned methods or the length property). function ObservableArray(items) { var _self = this, _array = [], _handlers = { itemadded: [], itemremoved: [],...