Sujeet Agrahari sujeet-agrahari

`globalSetup`

Path to a module that exports an async function that will run once before everything. Globals defined here can only be read in globalTeardown.

Typically it makes more sense to mock out any dependencies, but if you have no other choice than to spin up a database or other external service that absolutely must be running during the tests, globalSetup would be the place to do it.

`setupFiles` / `setupFilesAfterEnv`

A non-exhaustive list of WebGL and WebGPU frameworks and libraries. It is mostly for learning purposes as some of the libraries listed are wip/outdated/not maintained anymore.

Engines and libraries

three.js: JavaScript 3D library
stack.gl: an open software ecosystem for WebGL, built on top of browserify and npm.
PixiJS: Super fast HTML 5 2D rendering engine that uses webGL with canvas fallback
Pex: Pex is a javascript 3d library / engine allowing for seamless development between Plask and WebGL in the browser.
Babylon.js: a complete JavaScript framework for building 3D games with HTML 5 and WebGL
Filament: Filament is a real-time physically based rendering engine for Android, iOS, Windows, Linux, macOS and WASM/WebGL
ClayGL: A WebGL graphic library

execute command as another user

sudo -u <user> bash -c "<command to execute>"

list all users in system

Setup multiple git identities & git user informations

/!\ Be very carrefull in your setup : any misconfiguration make all the git config to fail silently ! Go trought this guide step by step and it should be fine 😉

Setup multiple git ssh identities for git

Generate your SSH keys as per your git provider documentation.
Add each public SSH keys to your git providers acounts.
In your ~/.ssh/config, set each ssh key for each repository as in this exemple:

Concepts

Benchmarking. We take two competing pieces of code - could be as simpler as a one liner or as complex as an entire web framework. Then, we put them up against each other (iterations per second). At the end of the task, we come up with a single metric, a score. We use the score to compare the two competing options.

In Ruby, the Benchmark module provides methods to measure and report the time used to execute Ruby code. http://ruby-doc.org/stdlib-2.0.0/libdoc/benchmark/rdoc/Benchmark.html

Profiling. Profiling your program is a way to determining which methods are called and how long each method take to complete.

	#!/bin/bash

	set -eo pipefail

	export KUBE_NAMESPACE=test
	export REPLICA_COUNT=3

	cat <<EOF \| kubectl apply -f -
	apiVersion: apps/v1beta1
	kind: StatefulSet

	/* *******************************************************************************************
	* THE UPDATED VERSION IS AVAILABLE AT
	* https://github.com/LeCoupa/awesome-cheatsheets
	* ******************************************************************************************* */


	// 0. Synopsis.
	// http://nodejs.org/api/synopsis.html

	git log = git history
	git log --all --decorate --oneline --graph = commit history graph
	git branch (branch-name) = create a branch
	git checkout (branch-name) = checkout a branch/move head pointer
	git commit -a -m "commit message" = commit all modified and tracked files in on command (bypass separate 'git add' command)
	git diff master..SDN = diff between 2 branches
	git merge (branch-name) = merge branches (fast-forward and 3-way merges)
	git branch --merged = see branches merged into the current branch
	git branch -d (branch-name) = delete a branch, only if already merged
	git branch -D (branch-name) = delete a branch, including if not already merged (exercise caution here)

	#!/usr/bin/env groovy
	pipeline {
	agent any
	tools {nodejs "latest"}
	stages {
	stage('preflight') {
	steps {
	echo sh(returnStdout: true, script: 'env')
	sh 'node -v'
	}

	{
	"apps": [
	{
	/* General */
	"name": "my-api", /* (string) application name (default to script filename without extension) */
	"script": "index.js", /* (string) script path relative to pm2 start */
	"cwd": "/var/www/", /* (string) the directory from which your app will be launched */
	"args": "-a 13 -b 12", /* (string) string containing all arguments passed via CLI to script */
	"interpreter": "/usr/bin/python", /* (string) interpreter absolute path (default to node) */
	"interpreter_args": "--harmony", /* (string) option to pass to the interpreter */