gaearon

Note:

When this guide is more complete, the plan is to move it into Prepack documentation.
For now I put it out as a gist to gather initial feedback.

A Gentle Introduction to Prepack (Part 1)

If you're building JavaScript apps, you might already be familiar with some tools that compile JavaScript code to equivalent JavaScript code:

• Babel lets you use newer JavaScript language features, and outputs equivalent code that targets older JavaScript engines.

mesterum

function permAlone(str) {
  if(str=='') return 1
  const bag=new Map()
  for(const c of str){
    bag.set(c,(bag.get(c)||0)+1)
  }
  const essence=[]
  for(let v of bag.values()){
    essence[--v]=(essence[v]||0)+1
  }

remarkablemark

JavaScript Classes - ES5 vs ES6

An example that shows the difference between creating a JavaScript class and subclass in ES5 and ES6.

Reference

getify

function add() {
	var sum = 0;
	
	function add() {
		for (var i=0; i<arguments.length; i++) {
			sum += Number(arguments[i]);
		}
		return add;
	}
	add.valueOf = function valueOf(){

danbrianwhite

var add = function(strNumOne, strNumTwo)
{
  var first;
	var second;

	var tempNumber = new Array();

	if(strNumOne.length >= strNumTwo.length)
	{
		first = strNumOne;

jareware

⇐ back to the gist-blog at jrw.fi

Advanced SCSS

Or, 16 cool things you may not have known your stylesheets could do. I'd rather have kept it to a nice round number like 10, but they just kept coming. Sorry.

I've been using SCSS/SASS for most of my styling work since 2009, and I'm a huge fan of Compass (by the great @chriseppstein). It really helped many of us through the darkest cross-browser crap. Even though browsers are increasingly playing nice with CSS, another problem has become very topical: managing the complexity in stylesheets as our in-browser apps get larger and larger. SCSS is an indispensable tool for dealing with this.

This isn't an introduction to the language by a long shot; many things probably won't make sense unless you have some SCSS under your belt already. That said, if you're not yet comfy with the basics, check out the aweso