paulirish

/* bling.js */
window.$ = document.querySelector.bind(document);
window.$$ = document.querySelectorAll.bind(document);
Node.prototype.on = window.on = function(name, fn) { this.addEventListener(name, fn); };
NodeList.prototype.__proto__ = Array.prototype;
NodeList.prototype.on = function(name, fn) { this.forEach((elem) => elem.on(name, fn)); };

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).

JunichiIto

This list is based on aliases_spec.rb.

You can see also Module: RSpec::Matchers API.

matcher	aliased to	description
a_truthy_value	be_truthy	a truthy value
a_falsey_value	be_falsey	a falsey value
be_falsy	be_falsey	be falsy
a_falsy_value	be_falsey	a falsy value

branneman

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

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:

michaelcox

require.config({
  baseUrl: '/backbone-tests/',
  paths: {
    'jquery'        : '/app/libs/jquery',
    'underscore'    : '/app/libs/underscore',
    'backbone'      : '/app/libs/backbone',
    'mocha'         : 'libs/mocha',
    'chai'          : 'libs/chai',
    'chai-jquery'   : 'libs/chai-jquery',
    'models'        : '/app/models'

eethann

_.mixin({
  // ### _.objMap
  // _.map for objects, keeps key/value associations
  objMap: function (input, mapper, context) {
    return _.reduce(input, function (obj, v, k) {
             obj[k] = mapper.call(context, v, k, input);
             return obj;
           }, {}, context);
  },
  // ### _.objFilter

sobstel

<?php
// old way
$value = $value ? $value : false;

// new way
$value = $value ?: false;

// however...
$value = isset($value) ?: false; // if eg. $value="value", then it returns (bool)true, and not (string)"value"

zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')