domenic

"use strict";

// `f` is assumed to sporadically fail with `TemporaryNetworkError` instances.
// If one of those happens, we want to retry until it doesn't.
// If `f` fails with something else, then we should re-throw: we don't know how to handle that, and it's a
// sign something went wrong. Since `f` is a good promise-returning function, it only ever fulfills or rejects;
// it has no synchronous behavior (e.g. throwing).
function dontGiveUp(f) {
    return f().then(
        undefined, // pass through success

Integralist

Run your application using: `node debug xxx.js` then use the following commands to step-through the code (note: Ctrl+D to exit the debugger)...
 
    `cont`                      -> continue running
    `next`                      -> step over next statement
    `step`                      -> step into next statement (if possible, otherwise it just steps over)
    `out`                       -> step out of the currently executing function
    `backtrace`                 -> show the current call execution frame or call stack
    `repl`                      -> start the node repl to allow you to view variable values and execute code
    `watch(expr)`               -> add given expression to the watch list (which is shown whenever you step through anything in the debugger)

Integralist

S.O.L.I.D principles

• Single Responsibility Principle
• Open/Closed Principle
• Liskov Substitution Principle
• Interface Segregation Principle
• Dependency Inversion Principle

Single Responsibility Principle

jcleveley-zz

Performance Hack - December 2013

Legacy of the hack

• The majority of the hacks will be be made a reality
• Pretty bad performance bug was found and fixed!
• The Rashboard hack will help developer teams understand the real-time performance of the site
• Everyone was excited about the potential of RUM data after James's talk
• N&K data developers joined in and were keen to develop ideas useful to News
• Great to see the unsurmountable stairs between floor 3/4 start to break down as everyone worked and chatted in the same space for 2 days

WebReflection

Update

This snippet is now improved and officially an npm module called dom-handler

sebmarkbage

/** @jsx React.DOM */

var Graphic = React.createClass({ 

  componentDidMount: function() {
    var context = this.getDOMNode().getContext('2d');
    this.paint(context);
  },

  componentDidUpdate: function() {

addyosmani

This let's me git clone a template repo, cd into and fire up a new template in my editor of choice:

$ clone starter # clones https://github.com/addyosmani/starter (a personal boilerplate)

$ clone h5bp html5-boilerplate # get me HTML5 Boilerplate

$ clone angular angular-seed # same for AngularJS seed

$ clone polymerlabs seed-element # same for a new Polymer element

ericelliott

Essential JavaScript Links

I no longer mantain this list. There are lots of other very comprehensive JavaScript link lists out there. Please see those, instead (Google "awesome JavaScript" for a start).

bendc

// array utils
// =================================================================================================

const combine = (...arrays) => [].concat(...arrays);

const compact = arr => arr.filter(Boolean);

const contains = (() => Array.prototype.includes
  ? (arr, value) => arr.includes(value)
  : (arr, value) => arr.some(el => el === value)

meyerweb

@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain("twitter.com") {
  /* styles for collapsing media in tweets and showing an arrow to indicate their existence
     but only at the top level */
  ol.stream-items > .expanding-stream-item:not(.open) .OldMedia,
  ol.stream-items > .expanding-stream-item:not(.open) .AdaptiveMedia {
    display: none;
  }