makaroni4

require 'benchmark'
require 'benchmark/ips'

Benchmark.ips do |r|
  r.report("group_by") do
    (0..1000).group_by { |w| w % 2 == 0 }.values
  end

  EVEN = 0
  ODD = 1

makaroni4

update fb_audiences
  set facebook_id = replace(facebook_id, '[^0-9]+$', '');

SELECT id, facebook_id
FROM fb_audiences
WHERE facebook_id ~ '[^0-9]+$'

makaroni4

(function() {
  function hideBoringArticles(nodes) {
    nodes.filter("article.badge-entry-container.badge-entry-entity").each(function(i, el) {
      if($(el).data("entryVotes") < 20000) {
        $(el).hide();
      }
    })
  }

  var MutationObserver = window.MutationObserver;

makaroni4

def toss
  (rand * 100) > 60 ? 1 : 2
end

# Both players bet on 1
def game
  toss_1 = toss()
  toss_2 = toss()

  if toss_1 == 1 && toss_2 != 1

makaroni4

at_exit do
  deploy.unlock
end

set :deploy_lock_file, "#{shared_path}/tmp/deploing_lock_file"

namespace :deploy do

desc "Check if somebody already is deploing"
  task :check_lock do

makaroni4

class Array
  def bindex element, lower = 0, upper = length - 1
    return if lower > upper
    mid = (lower + upper) / 2
    element < self[mid] ? upper = mid - 1 : lower = mid + 1
    element == self[mid] ? mid : bindex(element, lower, upper)
  end
end

class Array

makaroni4

class User
  def say
    puts "Hello"
  end
end

def override_instance_methods(c)
  c.instance_methods(false).each do |m|
    c.class_eval <<-RUBY
      alias #{m}_original #{m}

makaroni4

class String
  def to_caesar shift
    shift = (shift % 26).abs
    each_byte.map { |b| ((b + shift - 97) % 26 + 97).chr }.join
  end
end

a = "Caesar was a cool guy"

p a.split.map { |w| w.to_caesar 4 }.join(' ') # => "aeiwev aew e gssp kyc"

makaroni4

h = {}
h[:label] = "Red"

h_copy = h
h_dup = h.dup
h_clone = h.clone
h_deep_copy = Marshal.load( Marshal.dump h )

p h[:label].object_id           # => 2156268500
p h_dup[:label].object_id       # => 2156268500

makaroni4

require 'test/unit'
include Test::Unit::Assertions

class Array
  def transpose
    return [] if empty?
    a = Array.new(self.first.size) {[]}
    
    each do |e|
      begin