Why I like Ruby ...

PatchingEnumerable.rb

class Person
  attr_accessor :name

  def initialize(name)
    self.name = name
  end
end

people = []
people << Person.new "Frank"
people << Person.new "Fred"
people << Person.new "Ann"

module Enumerable
  def find_by_name( name )
    find_all { |o| o.name =~ name }
  end
end

people.find_by_name /^F/