Dibasic

colortest() {
	echo "$(tput setaf 1)1 $(tput setaf 2)2 $(tput setaf 3)3 $(tput setaf 4)4 $(tput setaf 5)5 $(tput setaf 6)6 $(tput setaf 7)7 $(tput setaf 8)8 $(tput setaf 9)9 $(tput setaf 10)10 $(tput setaf 11)11 $(tput setaf 12)12 $(tput setaf 13)13 $(tput setaf 14)14 $(tput setaf 15)15 $(tput setaf 16)16 $(tput sgr0)"
	local FCR=$(tput setaf 1)
	local FCG=$(tput setaf 2)
	local FCY=$(tput setaf 3)
	local FCB=$(tput setaf 4)
	local FCM=$(tput setaf 5)
	local FCC=$(tput setaf 6)
	local FCW=$(tput setaf 7)
	local FCK=$(tput setaf 8)

LambertSchulze

const INCREMENT = 'INCREMENT';
const DECREMENT = 'DECREMENT';

const counterReducer = (state = 0, action) => {
    switch(action.type) {
    case INCREMENT:
        return (state += 1);
    case DECREMENT:
        return (state -= 1);
    default: return 0;

JamieMason

Group Array of JavaScript Objects by Key or Property Value

Implementation

const groupBy = key => array =>
  array.reduce((objectsByKeyValue, obj) => {
    const value = obj[key];
    objectsByKeyValue[value] = (objectsByKeyValue[value] || []).concat(obj);
    return objectsByKeyValue;