crack.rb

# More ruby fun! 

def power(base)
  Proc.new {|x| base ** x }
end

base2 = power(2)  # => #<Proc:0x00000001001569d0@-:4>

base2.call(8)  # => 256

# Eigenclasses 

class CrazyStuff
  attr_reader :var # Read only! 
  
  def initialize
    @var = "You can't write me"
  end
  
  private 
  def nonono()
    return "BAD!"
  end
end

eigen = CrazyStuff.new()

def eigen.var=(monkeyPatch)
    @var = monkeyPatch
end

eigen.var="Ha!" # => "Ha!"
eigen.var       # => "Ha!"

breakin = CrazyStuff.new()
breakin.instance_eval("@var=\"EVIL\"") # this is evil. But it works! 
breakin.var # => "EVIL"

# Rubyisms...

def atLeastZero(someNumber)
  [0,someNumber].max
end

atLeastZero(1) # => 1