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

makaroni4

# assert_equal "あいうえお".unpack('__'), [12354, 12356, 12358, 12360, 12362]

['S', 'L', 'Q', 'c', 's', 'l', 'q', 'S_', 'S!', 'I', 'I_', 'I', 'L_', 'L!', 's_', 's!', 'i', 'i_', 'i', 'l_', 'l!', 'S>', 'L>', 'Q>', 's>', 'l>', 'q>', 'S!>', 'I!>', 'L!>', 's!>', 'i!>', 'l!>', 'S<', 'L<', 'Q<', 's<', 'l<', 'q<', 'S!<', 'I!<', 'L!<', 's!<', 'i!<', 'l!<', 'n', 'N', 'v', 'V', 'U', 'w', 'a', 'A', 'Z', 'B', 'b', 'H', 'h', 'u', 'M', 'm', 'P', 'p', '@', 'x', 'X', 'D', 'd', 'F', 'f', 'E', 'e', 'G', 'g'].each do |a|
  begin
    p "あいうえお".unpack("#{a}*")
  rescue
  end
end

makaroni4

$("input[type='checkbox']").each(function(){
    $(this).attr('checked', true);
});

makaroni4

class Integer
  def odd?
    % 2 == 0 
  end
end

def middle_index(input)
  size = input.size
  if size.odd?
    size/2

makaroni4

class Array
  def my_own_inject(proc)
    temp = 0
    self.each do |e|
      temp = proc.call(temp, e)
    end
    temp
  end
end

makaroni4

source 'http://rubygems.org'
gem 'sinatra'
gem 'haml'