madrobby

sqlite> SELECT * FROM ENTRIES_TAGS WHERE TAG_ID IN (58, 59);

140|58
141|59 
142|58
142|59 

sqlite> SELECT DISTINCT ENTRIES.ID FROM ENTRIES INNER JOIN ENTRIES_TAGS ON (ENTRIES.ID = ENTRIES_TAGS.ENTRY_ID) WHERE ENTRIES_TAGS.TAG_ID = 59 INTERSECT SELECT DISTINCT ENTRIES.ID FROM ENTRIES INNER JOIN ENTRIES_TAGS ON (ENTRIES.ID = ENTRIES_TAGS.ENTRY_ID) WHERE ENTRIES_TAGS.TAG_ID = 58;

142

madrobby

config.action_controller.asset_host = Proc.new do |source, request|
  non_ssl_host = "http://asset#{source.hash % 4}.backpackit.com"
  ssl_host     = "https://asset1.backpackit.com"
  
  if request.ssl?
    case
    when source =~ /\.js$/
      ssl_host
    when request.headers["USER_AGENT"] =~ /(Safari)/
      non_ssl_host

madrobby

var s2 = {
  Version: '2.0.0a1'
};

s2.fx = new (function(){
  var queues = [], globalQueue, heartbeat, activeEffectCount = 0;
  
  this.beatOnDemand = function(dir){
    heartbeat[(activeEffectCount += dir) > 0 ? 'start' : 'stop']();
  };

madrobby

Coming soon from yours truly and Amy Hoy! 

As a special thank you for my regular readers (you!), <a href="http://javascriptrocks.com/">sign up for the announcement email and get $5 off the regular price</a> when the beta book is out!

<a href="http://javascriptrocks.com/"><img src="http://javascriptrocks.com/coming-soon-opt.png"/></a>

The book will cover all sorts of topics around JavaScript performance, from perceptive loading performance all the way down to selecting between if and case statements. 

It's library/framework agnostic, so whether you use Prototype, jQuery, Mootools or any other libs, you'll find that you'll be able to provide faster-loading, better performing JavaScript to your users. 

madrobby

def pack_file(source, target)
  puts `java -jar lib/yuicompressor-2.4.1.jar -v #{source} -o #{target}`
  `gzip -9 #{target} -c > #{target}.gzip`
  
  puts "#{source}: #{'%.1f' % (File.size(source)/1024.0)}k"
  puts "Packed: #{'%.1f' % (File.size(target)/1024.0)}k"
  puts "Packed+GZIP: #{'%.1f' % (File.size(target+'.gzip')/1024.0)}k"
  puts
end

madrobby

s2.css = {
  PROPERTY_MAP: {
    backgroundColor: 'color',
    borderBottomColor: 'color',
    borderBottomWidth: 'length',
    borderLeftColor: 'color',
    borderLeftWidth: 'length',
    borderRightColor: 'color',
    borderRightWidth: 'length',
    borderSpacing: 'length',

madrobby

s2.fx.Opacity = Class.create(s2.fx.Element, {
  setup: function() {
    var from = this.options.from || 0, to = this.options.to || 1;
    this.element.setStyle('opacity:'+from);
    this.animate('style', this.element, { style: 'opacity:'+to });
  }
});

madrobby

(function() {
  
  /** section: DOM
   * Event
   *  
   *  The namespace for Prototype's event system.
   *  
   *  <h4>Events: a fine mess</h4>
   *  
   *  Event management is one of the really sore spots of cross-browser

madrobby

var ObjectRange = Class.create(Enumerable, (function() {
  function initialize(start, end, exclusive) {
    // ...
  }
  
  function _each(iterator) {
    // ...
  }
  
  function include(value) {

madrobby

var CreditCard = {
  CARDS: {
    Visa: /^4[0-9]{12}(?:[0-9]{3})?$/,
    MasterCard: /^5[1-5][0-9]{14}$/,
    DinersClub: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/,
    Amex: /^3[47][0-9]{13}$/,
    Discover: /^6(?:011|5[0-9]{2})[0-9]{12}$/
  },
  TEST_NUMBERS: $w('378282246310005 371449635398431 378734493671000 '+
    '30569309025904 38520000023237 6011111111111117 '+