creationix

Generators vs Fibers

Both ES6 generators and node-fibers can be used to block a coroutine while waiting on some I/O without blocking the entire process. Both can do this for arbitrarily deep call stacks. The main difference between the capabilities of the two is how explicit the syntax is.

Generators - Safe, but Explicit

In code that uses ES6 generators:

var run = require('gen-run'); // https://github.com/creationix/gen-run

creationix

// A streaming byte oriented JSON parser.  Feed it a single byte at a time and
// it will emit complete objects as it comes across them.  Whitespace within and
// between objects is ignored.  This means it can parse newline delimited JSON.
function jsonMachine(emit, next) {
  next = next || $value;
  return $value;
  
  function $value(byte) {
    if (!byte) return;
    if (byte === 0x09 || byte === 0x0a || byte === 0x0d || byte === 0x20) {

mduvall

var generateRandomBoxes = function() {
  var $doc = $(".container");
  var $bareBox = $("<div class='box' style='position:absolute; border:1px solid black; width:50px;'></div>");
  var maxHeight = 200;
  var height,
      $box;
 
  for (var i = 0; i < 100; i++) {
    height = Math.floor(Math.random() * maxHeight); 
    $box = $bareBox.clone().css('height', height + 'px')

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

defunctzombie

The spec has moved to a repo: https://github.com/defunctzombie/package-browser-field-spec to facilitate collaboration.

desandro

( function( window, undefined ) {

'use strict';

// helper function
function capitalize( str ) {
  return str.charAt(0).toUpperCase() + str.slice(1);
}

// ========================= getStyleProperty by kangax ===============================

edavis

Use Dropbox as a git remote ... the right way

eed3si9n

gnome-cups-manager
------------------

Once upon a time there was a printer who lived in the woods.  He was a
lonely printer, because nobody knew how to configure him.  He hoped
and hoped for someone to play with.

One day, the wind passed by the printer's cottage.  "Whoosh," said the
wind.  The printer became excited.  Maybe the wind would be his
friend!  

domenic

This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.

You're Missing the Point of Promises

Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:

getTweetsFor("domenic", function (err, results) {
 // the rest of your code goes here.

trdarr

/* "Thunks, Trampolines, and Continuation Passing"
 * Python implementation from http://jtauber.com/blog/2008/03/30/
 * JavaScript implementation by Thomas Darr <[email protected]>.
 */

// thunk = lambda name: lambda *args: lambda: name(*args)
var thunk = function thunk(fn) {  
  return function _thunk() {
    var splat = Array.prototype.slice.apply(arguments);
    return function __thunk() { return fn.apply(this, splat); };