Production Ready™

good_ideas.rb

require 'pry'
require 'binding_of_caller'

class Symbol
  def and_then snd=nil
    fst = self.to_s
    binding.of_caller(1).eval %{
      define_method :#{fst}_and_then_#{snd} do
        send :#{fst}_without_#{snd}
        send :#{snd}
      end
      alias_method :#{fst}_without_#{snd}, :#{fst}
      alias_method :#{fst}, :#{fst}_and_then_#{snd}
    }
  end
end

class Thing
  def get_happy
    puts "Woo!"
  end

  def think_about_it
    puts "Hrm ..."
    sleep 1
  end.and_then :get_happy
end

Thing.new.think_about_it