kimjoar

 var Statuses = function() {
 };
 Statuses.prototype.add = function(options) {
     $.ajax({
         url: '/status',
         type: 'POST',
         dataType: 'json',
         data: { text: options.text },
         success: options.success
     });

kimjoar

-function addStatus(options) {
+var Statuses = function() {
+};
+Statuses.prototype.add = function(options) {
     $.ajax({
         url: '/status',
         type: 'POST',
         dataType: 'json',
         data: { text: options.text },
         success: options.success

kimjoar

 function addStatus(options) {
     $.ajax({
         url: '/status',
         type: 'POST',
         dataType: 'json',
-        data: { text: $('#new-status textarea').val() },
-        success: function(data) {
-            $('#statuses ul').append('<li>' + data.text + '</li>');
-            $('#new-status textarea').val('');
-        }

kimjoar

We couldn’t find that file to show.

kimjoar

+function addStatus(options) {
+    $.ajax({
+        url: '/status',
+        type: 'POST',
+        dataType: 'json',
+        data: { text: $('#new-status textarea').val() },
+        success: function(data) {
+            $('#statuses ul').append('<li>' + data.text + '</li>');
+            $('#new-status textarea').val('');
+        }

kimjoar

require './xmldsl'

Twitter = Struct.new :name, :avatar, :text
twitters = []
5.times { twitters << Twitter.new("Jonas", "/profile.png", "Hello World!") }

xml = XML.generate do
  html do
    body do
      twitters.each do |tw|

kimjoar

Simple Ruby DSL to generate XML

Implemented as an exercise to learn about metaprogramming in Ruby. The DSL is implemented using instance_eval and method_missing.

Usage

require 'xmldsl'

Twitter = Struct.new :name, :avatar, :text
twitters = []
5.times { twitters << Twitter.new("Jonas", "/profile.png", "Hello World!") }

kimjoar

var events = new EventEmitter();

var UserView = function(el, user) {
  this.el = el;
  this.user = user;

  // Let's listen for someone emitting the event 'user:showImage', which
  // we listen for and then show the user's image.
  // The first parameter is the event name, the second is the function
  // to call when the event is triggered, and the third is the context

kimjoar

UserView.prototype.$ = function(selector) {
  return this.el.find(selector);
}

kimjoar

describe('user view', function() {
  it('should be able to show image', function() {
    var user = {
      image: "user.png"
    };

    var view = new UserView($('<div></div>'), user);
    view.showImage();

    // remember that `view.el` is a jQuery object. So now we can call