Jackson Holiday Wheeler jhwheeler

Inspired by dannyfritz/commit-message-emoji

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

Commit type	Emoji
Initial commit	🎉 `:tada:`
Version tag	🔖 `:bookmark:`
New feature	✨ `:sparkles:`
Bugfix	🐛 `:bug:`

	// Simple problems to solve using the native .reduce and .map array methods. Each of these problems can be solved in many
	// different ways, but try to solve them using the requested higher order function.

	// MAP

	// Write a function capitalize that takes a string and uses .map to return the same string in all caps.
	// ex. capitalize('whoop') // => 'WHOOP'
	// ex. capitalize('oh hey gurl') // => "OH HEY GURL"
	var capitalize = function(string){
	// code code code!

	// Determine if an element is in the visible viewport
	function isInViewport(element) {
	var rect = element.getBoundingClientRect();
	var html = document.documentElement;
	return (
	rect.top >= 0 &&
	rect.left >= 0 &&
	rect.bottom <= (window.innerHeight \|\| html.clientHeight) &&
	rect.right <= (window.innerWidth \|\| html.clientWidth)
	);

	# you have ctags but it does not work...
	$ ctags -R --exclude=.git --exclude=log *
	ctags: illegal option -- R
	usage: ctags [-BFadtuwvx] [-f tagsfile] file ...

	#you need to get new ctags, i recommend homebrew but anything will work
	$ brew install ctags

	#alias ctags if you used homebrew
	$ alias ctags="`brew --prefix`/bin/ctags"

	#!/bin/bash

	# This script will open all files from a git diff or a git show in vim.

	# My bash skills are a bit primitive so this can probably be done more intelligently

	# Usage:
	# gitopen -- opens all added files that have changed since HEAD
	# gitopen diff HEAD -- these are the default parameters
	# gitopen diff master -- opens files that have changed from master

	const arr1 = [1,2,3]
	const arr2 = [4,5,6]
	const arr3 = [...arr1, ...arr2] //arr3 ==> [1,2,3,4,5,6]