gistfile1.rb

class Symbol
  def to_proc
    Proc.new { |obj, *args| obj.send(self, *args) }
  end
end

class Foo
  def foo
    :foo
  end
end

@foos = [Foo.new] * 1_000_000

@foos.each(&:foo) #with shorthand
# @foos.each{|f| f.foo} #without shorthand