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Why would you use an ivar?

I usually see this question asked the other way, such as Must every ivar be a property? (and I like bbum's answer to this Q). ...
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console.log javascript [Function]

... If it's a user defined function you can use: console.log(callback.toString()); Otherwise you'll just get something like [native code] since built in functions are not written in JavaScript. Example: function x(){} // Prints "function x(){}" (function(callback){ console.log(call...
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How can I perform a culture-sensitive “starts-with” operation from the middle of a string?

... mapping. You would need to know the length of the substring that was actually matched. But Compare, IndexOf ..etc throw that information away. It could be possible with regular expressions but the implementation doesn't do full case folding and so doesn't match ß to ss/SS in case-insensitive mode...
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Code Golf: Lasers

...is sitting on top of now. Since the laser emitter is to be treated like a wall, set this to be a wall to begin with. if (tr/v<^/>v</) { my $o; $o .= "\n" while s/.$/$o .= $&, ""/meg; tr,/\\,\\/, for $o, $s; $_ = $o; } If the laser beam is pointing any way except right, rotate...
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Is there a range class in C++11 for use with range based for loops?

...:irange, which is a bit more focused in scope. C++20's range library will allow you to do this via view::iota(start, end). share | improve this answer | follow ...
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Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell

... and the time changes to 11.1 seconds in factorCount' you have needlessly called fromIntegral. A fix results in no change though (the compiler is smart, lucky for you). You used mod where rem is faster and sufficient. This changes the time to 8.5 seconds. factorCount' is constantly applying two extr...
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How to initialize a private static const map in C++?

... int>’ as ‘this’ argument of ‘std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](const key_type&) [with _Key = int; _Tp = int; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, int>...
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What's with 181783497276652981 and 8682522807148012 in Random (Java 7)?

...d have worked as well as these two numbers? Not every number would be equally "good". So, no. Seeding Strategies There are differences in the default-seeding schema between different versions and implementation of the JRE. public Random() { this(System.currentTimeMillis()); } public Ra...
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What would cause an algorithm to have O(log log n) complexity?

... n) terms can show up in a variety of different places, but there are typically two main routes that will arrive at this runtime. Shrinking by a Square Root As mentioned in the answer to the linked question, a common way for an algorithm to have time complexity O(log n) is for that algorithm to work...
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What does the keyword Set actually do in VBA?

...ould be correct (and it would be in C), but Set A = B | A = &B; is actually correct in VBA (and it would fail in C). In VBA, A = B and Set A = B are BOTH equivalent to C's A = B;! The distinction happens somewhere else. – Niko O May 25 at 8:18 ...