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C library function to perform sort
... /* Assumes you have some int *arr or int arr[128]; */
This should be at least twice as fast as the standard library qsort, since it doesn't use function pointers, and has many other sorting algorithm options to choose from.
It's in C89, so should work in basically every C compiler.
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How do I get bit-by-bit data from an integer value in C?
... behavior (see this question).
By right-shifting the desired bit into the least significant bit position, masking can be done with 1. No need to compute a new mask value for each bit.
(n >> k) & 1
As a complete program, computing (and subsequently printing) an array of single bit value...
How to specify test directory for mocha?
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This is the option with the least friction, and should be the accepted answer IMHO
– Nick Tomlin
Apr 17 '15 at 20:47
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How to run JUnit test cases from the command line
... @panny it's a semicolon on Windows. On n *nix environment (at least OSX and all the Linux distros I've used) you use a colon.
– rand_acs
Feb 7 '13 at 7:44
1
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Java: Get month Integer from Date
...? Imo a horrible design, especially since days start at one (they could at least be consistent!). I assume it was just some oversight in a not especially well designed API (both Date and Calendar) to begin with. But maybe there's some precedent - it just seems strange to me and has caused problems t...
Where can I find my .emacs file for Emacs running on Windows?
...%USERPROFILE% directory which is the logical HOME directory on windows (at least as far as I'm concerned).
– PatS
Nov 2 '18 at 22:05
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How to find out what type of a Mat object is with Mat::type() in OpenCV
...ifying your opencv matrices at runtime. I find it useful for debugging, at least.
string type2str(int type) {
string r;
uchar depth = type & CV_MAT_DEPTH_MASK;
uchar chans = 1 + (type >> CV_CN_SHIFT);
switch ( depth ) {
case CV_8U: r = "8U"; break;
case CV_8S: r = "8S"...
Why is string concatenation faster than array join?
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Optimization 101: You should aim for the least slow! for example, arr.join vs str+, on chrome you get (in operations per second) 25k/s vs 52k/s. on firefox new you get 76k/s vs 212k/s. so str+ is FASTER. but lets look other browsers. Opera gives 43k/s vs 26k/s. IE g...
Formatting floats without trailing zeros
...at comes out as a string is the same number that goes in as a float, or at least the closest representation of it. >>>12345.600000000000364 == 12345.6 True
– PolyMesh
Mar 7 '19 at 0:26
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Best way to detect that HTML5 is not supported
...m refuting the compatibility claims by Paul, based on my own testing in at least one of the problem browsers he mentioned in his comment. I've been unable to test the other browser but I remain unconvinced that there's an issue. You should always aim to get the best performance possible, without sa...