Spell: Refinement

refinement.rb

# =================
# Spell: Refinement
# =================

# Patch a class until the end of the file, or (from Ruby 2.1) until the end of the including module.

module MyRefinement
  refine String do
    def reverse
      "my reverse"
    end
  end
end

"abc".reverse # => "cba"
using MyRefinement
"abc".reverse # => "my reverse"

# For more information: http://www.pragprog.com/titles/ppmetr/metaprogramming-ruby