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What is the difference between float and double?

... of the value 2^24 followed by 2^24 repetitions of the value 1. Summing in order produces 2^24. Reversing produces 2^25. Of course you can make examples (e.g. make it 2^25 repetitions of 1) where any order ends up being catastrophically wrong with a single accumulator but smallest-magnitude-first is...
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Missing XML comment for publicly visible type or member

...for most things, how they need to be worded (for properties, constructors, etc.), and GhostDoc puts those in -- even cooler: If you're in a child class, it can fill in the documentation with that from the base class as a template to work with, instead of copying it by hand -- it puts in the exceptio...
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What is the difference between concurrency, parallelism and asynchronous methods?

...lit up into units (units essentially being threads) that can be ran in any order and have a determinate outcome. Parallel means these units/threads are being ran literally at the same time on multiple processors. – user7917402 Apr 26 '17 at 9:23 ...
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Why malloc+memset is slower than calloc?

...The performance difference here is much larger (I measured more than three orders of magnitude on my system between malloc()+memset() and calloc()). Party trick Instead of looping 10 times, write a program that allocates memory until malloc() or calloc() returns NULL. What happens if you add mems...
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Switching between GCC and Clang/LLVM using CMake

... If you want to install clang-3.5, clang-3.6, etc. use this to set the default stackoverflow.com/a/30742451/1427533 as otherwise you'll get There is only one alternative in link group cc (providing /usr/bin/cc): /usr/bin/gcc – miguel.martin ...
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Vertically centering a div inside another div [duplicate]

... +1, but it curiously depends on the order of positions. Starting bottom: 0; left: 0; gets the inner div stuck on the bottom of the parent (Chrome 33, anyways). – Patrick M Apr 6 '14 at 16:58 ...
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How to convert JSON data into a Python object

...esting. I thought relying on d.keys() and d.values() iterating in the same order is not guaranteed, but I was wrong. The docs say: "If keys, values and items views are iterated over with no intervening modifications to the dictionary, the order of items will directly correspond.". Good to know for s...
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Jump to function definition in vim

...servers, e.g.: type python to find coc-jedi, type php to find coc-phpls, etc. (optionally) see install_gadget.py --help for available debuggers, e.g.: ./install_gadget.py --enable-python, ./install_gadget.py --force-enable-php, etc. Full answer: Language server (LS) is a separate standalone...
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Difference between .on('click') vs .click()

...d obviously there are other similar shortcut methods for "keyup", "focus", etc.) The reason I'm posting an extra answer is to mention what happens if you call .click() with no parameters: $("#whatever").click(); // is a shortcut for $("#whatever").trigger("click"); Noting that if you use .trigge...
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How to check BLAS/LAPACK linkage in NumPy and SciPy?

...n NumPy is built, it builds its own dot-product routines. These can be two orders of magnitude slower than ATLAS. – Fred Foo Sep 1 '13 at 12:33 5 ...