map.rb is a string/symbol indifferent ordered hash that works in all rubies. out of the over 200 ruby gems i have written, this is the one i use every day, in all my projects. some may be accustomed to using ActiveSupport::HashWithIndiffentAccess and, although there are some similarities, map.rb is more complete, works without requiring a mountain of code, and has been in production usage for over 15 years. it has no dependencies, and suports a myriad of other, 'tree-ish' operators that will allow you to slice and dice data like a giraffee with a giant weed whacker.