rails/rails — pull request #6060 by lucashungaro (2012-04-29 18:55:03+00:00)
Title: Adding deep versions of stringify_keys and symbolize_keys (plain and bang) for nested hashes

I have to carry around some snippets 'cause I always use these methods (specially deep_symbolize_keys) when I use YAML files with custom app configuration. Some people I know also have their own versions, so I thought adding them to ActiveSupport was a good idea.