jballanc

#!/usr/bin/env ruby
 
module Example
  def self.hello(arg)
    puts "Hello, #{arg}! You are Object \#: #{arg.object_id}"
    arg = 'different'
    puts "Arg is now #{arg}; Object \#: #{arg.object_id}"
  end
  
  def self.not_local_hello

jballanc

Music/iTunes/iTunes Music/Bob Seager
Music/iTunes/iTunes Music/Jethro Tull/Songs From the Wood
Music/iTunes/iTunes Music/DJ Shadow/Live! In Tune & On Time (Brilliant Box)/01 Intro.m4p
Music/iTunes/iTunes Music/Red Hot Chili Peppers/Californication (Bonus Version)/10 I Like Dirt.m4p
Music/iTunes/Album Artwork/Download/1386487F98DF33BD/02/09
Music/iTunes/iTunes Music/The Mamas and the Papas/California Dreamin'/01 California Dreamin' (Single).m4p
Music/iTunes/iTunes Music/Compilations/One Night Only_ The Greatest Hits Live/12 Candle In The Wind (Live).m4a
Music/iTunes/iTunes Music/Smashing Pumpkins/Zeitgeist/06 Starz.m4p
Music/iTunes/iTunes Music/Academy of St. Martin in the Fields & Sir Neville Marriner/The Complete Mozart Edition_ The Serenades for Orchestra, Vol. 2/1-01 March in D, K.237.m4p
Music/iTunes/iTunes Music/Red Hot Chili Peppers/Californication (Bonus Version)/04 Otherside.m4p

jballanc

if $0 == __FILE__
  puts "I'm running as an executable"
end

class Test
  def say
    puts "I'm from a library"
  end
end

jballanc

if $0 == __FILE__
  require 'b.rb'
  test = TestB.new
  test.say
end

class TestA
  def say
    puts "I'm from library file a.rb"
  end

jballanc

irb(main):001:0> class A
irb(main):002:1>   def foo
irb(main):003:2>     puts "In class A"
irb(main):004:2>   end
irb(main):005:1> 
irb(main):006:1*   def my_meta
irb(main):007:2>     class << self
irb(main):008:3>       self
irb(main):009:3>     end
irb(main):010:2>   end

jballanc

def ack(m, n)
  if m == 0
    n + 1
  elsif n == 0
    ack(m - 1, 1)
  else 
    ack(m - 1, ack(m, n - 1))
  end
end

jballanc

def ack(m, n)
  if m == 0
    n + 1
  elsif n == 0
    ack(m - 1, 1)
  else 
    ack(m - 1, ack(m, n - 1))
  end
end

jballanc

require 'thread'
require 'timeout'

class ObjectPool
  attr_reader :max
  attr_accessor :timeout
  attr_accessor :create
  attr_accessor :objects
  attr_accessor :used
  

jballanc

class Test
  def say
    puts "hello, world"
  end
end

jballanc

irb(main):001:0> class A
irb(main):002:1> def test(thing)
irb(main):003:2> puts "#{thing}! from class A!"
irb(main):004:2> end
irb(main):005:1> end
=> nil
irb(main):006:0> class B < A
irb(main):007:1> def test(thing)
irb(main):008:2> super(thing)
irb(main):009:2> puts "...and now from class B too!"