On Feb 21, 2005, at 11:52 AM, Adriano Ferreira wrote:
>> You're right.  This should throw an error or a warning (according the
>> YAML specification).  This a simple fix, but cannot be done in Ruby.
> class AngryHash < Hash

Heh, that's a cute name :)

I use this myself, called WriteOnceHash
http://phrogz.net/RubyLibs/rdoc/classes/WriteOnceHash.html