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Get number of digits with JavaScript

...on: String(number).match(/\d/g).length. In terms of speed potentially the fastest way to get number of digits in the given number is to do it mathematically. For positive integers there is a wonderful algorithm with log10: var length = Math.log(number) * Math.LOG10E + 1 | 0; // for positive integ...
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Rule-of-Three becomes Rule-of-Five with C++11?

...es where the implicitly generated special member functions are correct and fast) Destructor, copy constructor, copy assignment operator (in this case the class will not be movable) Destructor, move constructor, move assignment operator (in this case the class will not be copyable, useful for r...
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fastest MD5 Implementation in JavaScript

...here. Does anybody know which one is the most advanced, most bugfixed and fastest? 18 Answers ...
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Setup RSpec to test a gem (not Rails)

...e looks like this: # .rspec --format documentation --color --debug --fail-fast Easy, fast, neat! I like this because you don't have to add any dependencies to your project at all, and the whole thing remains very fast. bundle exec slows things down a little, which is what you'd have to do to ma...
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Converting JSON data to Java object

... I use it in an android app. It is not the fastest possible solution but it is simple enough to program to justify the lack of performance for the user until now. Maybe in a later version of the app it will be removed for a faster solution. – Jan...
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Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_

I was looking for the fastest way to popcount large arrays of data. I encountered a very weird effect: Changing the loop variable from unsigned to uint64_t made the performance drop by 50% on my PC. ...
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C# vs C - Big performance difference

...to use such optimization techniques just to get their code to run slightly faster than the c# code. Use cases for for c/c++ are narrowing. – user2074102 Aug 23 '16 at 16:11 a...
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How do you squash commits into one patch with git format-patch?

...xample (tmpsquash)]$ git merge --squash newlines Updating 4d2de39..b6768b2 Fast forward Squash commit -- not updating HEAD test.txt | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) [adam@mbp2600 example (tmpsquash)]$ git commit -a -m "My squashed commits" [tmpsquash]: created 75b0a89: "...
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What is the best open XML parser for C++? [duplicate]

... How about RapidXML? RapidXML is a very fast and small XML DOM parser written in C++. It is aimed primarily at embedded environments, computer games, or any other applications where available memory or CPU processing power comes at a premium. RapidXML is licensed u...
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C library function to perform sort

...ction. This is not the best quick sort implementation in the world but it fast enough and VERY EASY to be used... the formal syntax of qsort is: qsort(<arrayname>,<size>,sizeof(<elementsize>),compare_function); The only thing that you need to implement is the compare_function,...