Ruby regex key search

Question

http://ruby-doc.org/core-1.9.3/Hash.html#method-i-include-3F

It is possible to convert hash.has_key?(String) to have a regex search capabilities?

Answer 1

I think that using any? is a good solution as stated by qqbenq, but I would prefer using it with grep since it's more succinct.

hash.keys.grep(/regexp/).any?