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@jboner
jboner / latency.txt
Last active July 5, 2024 02:48
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@sabarasaba
sabarasaba / gist:3080590
Created July 10, 2012 02:19
Remove directory from remote repository after adding them to .gitignore
git rm -r --cached node_modules
git commit -m 'Remove the now ignored directory node_modules'
git push origin master
@aras-p
aras-p / preprocessor_fun.h
Last active June 21, 2024 12:20
Things to commit just before leaving your job
// Just before switching jobs:
// Add one of these.
// Preferably into the same commit where you do a large merge.
//
// This started as a tweet with a joke of "C++ pro-tip: #define private public",
// and then it quickly escalated into more and more evil suggestions.
// I've tried to capture interesting suggestions here.
//
// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,
@patriciogonzalezvivo
patriciogonzalezvivo / GLSL-Noise.md
Last active July 5, 2024 10:29
GLSL Noise Algorithms

Please consider using http://lygia.xyz instead of copy/pasting this functions. It expand suport for voronoi, voronoise, fbm, noise, worley, noise, derivatives and much more, through simple file dependencies. Take a look to https://github.com/patriciogonzalezvivo/lygia/tree/main/generative

Generic 1,2,3 Noise

float rand(float n){return fract(sin(n) * 43758.5453123);}

float noise(float p){
	float fl = floor(p);
  float fc = fract(p);
@wayspurrchen
wayspurrchen / git patterns.md
Last active January 18, 2023 21:38
Useful Git Techniques

History

Show file at certain commit

git show <hash>:<file>

Show history of a file

git log -p <filename>

@tobyp
tobyp / glfw-error.c
Created July 22, 2016 15:53
Minimal test program to reproduce a GLFW/Cairo problem concerning GLX
#include <GLFW/glfw3.h>
#define GLFW_EXPOSE_NATIVE_X11
#define GLFW_EXPOSE_NATIVE_GLX
#include <GLFW/glfw3native.h>
#include <cairo/cairo.h>
#include <cairo/cairo-gl.h>
#include <stdlib.h>
int main(int argc, char * argv[]) {
@avafloww
avafloww / PhpJava.java
Last active June 13, 2024 07:36
This snippet of code is syntactically valid in both PHP and Java, and produces the same output in both.
/*<?php
//*/public class PhpJava { public static void main(String[] args) { System.out.printf("/*%s",
//\u000A\u002F\u002A
class PhpJava {
static function main() {
echo(//\u000A\u002A\u002F
"Hello World!");
}}
//\u000A\u002F\u002A
PhpJava::main();