there_i_fixed_it.rb

# This is a joke! You'd be crazy to use it.
#
# But, isn't it interesting?
# 
# Symbol#to_proc normally returns something like proc { |o| o.send(self) }
#
# This code hacks it such that if a method exists in the *caller's* binding,
# that method is invoked instead.
#
# Ruby 2.0 only (for debug_inspector)

require 'debug_inspector'

module SymbolExtensions
  def to_proc
    method = nil
    RubyVM::DebugInspector.open do |i|
      method = eval "method(:#{self}) rescue nil", i.frame_binding(2)
    end

    method ? method.to_proc : super
  end
end

Symbol.send :prepend, SymbolExtensions

["Hello World", "Ouch", "Fizzbuzz"].each(&:puts) # Method#to_proc
p ["1", "2", "3"].map(&:to_i)                    # Symbol#to_proc

Haha. Evil.

I always got tired of writing this, no longer :)

["Hello World", "Ouch", "Fizzbuzz"].each(&method(:puts))