intridea/hashie — pull request #50 by benjaminoakes (2012-06-12 20:02:21+00:00)
Title: Alias equivalents of the key predicate (#key?)

Pretty straightforward.

We noticed that `IndifferentAccess` was failing when we used `has_key?` rather than `key?`. I aliased [the others](http://www.ruby-doc.org/core-1.9.3/Hash.html#method-i-key-3F) for good measure.

I tried to match the style I observed in the code. If you have any questions, please let me know.