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_ = {
  map: function(hash, lambda) {
    return Object.keys(hash).map(function(key) {
      var value = hash[key];
      return lambda(value, key);
    });
  },

  omit: function(hash, unwanted) {
    var tmp = {};

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• http://stackoverflow.com/questions/3606591/why-does-intellij-idea-compile-scala-so-slowly/3612212#3612212
• https://gist.github.com/anonymous/1406238
• http://www.infoq.com/news/2011/11/yammer-scala
• http://grundlefleck.github.io/2013/06/23/using-scala-will-make-you-less-productive.html
• http://www.infoq.com/news/2011/11/scala-ejb2
• http://alarmingdevelopment.org/?p=562
• https://news.ycombinator.com/item?id=7458588

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# inspired by twitter's RECESS
# http://twitter.github.io/recess/
# usage: git diff | ruby ~/linter.rb
class Linter

  def process
    @result = {}

    STDIN.each_line do |line|
      @line = line[2..-1]

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Pub/sub pattern gems to simplify your models and avoid callbacks:

• event_bus, see video
• propono, using Simple Notification Service (SNS) and Simple Queue Service (SQS) from AWS
• wisper

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/**
 * Clase de ejemplo o referencia para usarse con AbstractView.
 */
 
 View = (function(_super) {
  __extends(View, _super);

  function View() {
    return View.__super__.constructor.apply(this, arguments);
  }

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class @AbstractView
  constructor: ->
    console.log "I'm not meant to be instantitated"

  render: ->
    for event_selector of @events
      event_selector_array = event_selector.split(' ')
      event = event_selector_array.reverse().pop()
      selector = event_selector_array.reverse().join(' ')
      if selector == 'document'

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/**
 * QUÉ ES ESTO
 * Una manera muy simple de organizar los eventos de una página de tal modo que no están
 * esparcidos por el código javascript. Inspirado en las vistas de backbone.js
 * 
 * POR QUÉ
 * De este modo los eventos que escucha tu página están declarados en un lugar evidente.
 * 
 * CÓMO USARLO
 * Crea una clase View que herede de AbstractView. Esta clase debe definir:

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class OpenStruct

  def initialize(args)
    args.each_pair do |k,v|
      instance_variable_set "@#{k}", v
    end
  end

  def method_missing(name, *args)
    instance_variable_get "@#{name}"

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20. Use Full Text Search in PostgreSQL

$ rails g resource article subject body:text

class CreateArticles < ActiveRecord::Migration
  def change
    create_table :articles do |t|