How do I get the unique elements from an array of hashes in Ruby?

Question

I have an array of hashes, and I want the unique values out of it. Calling Array.uniq doesn\'t give me what I expect.

a = [{:a => 1},{:a =&g         


        

Answer 1

Ruby 1.8.7+ will return just what you have expected:

[{:a=>1}, {:a=>2}, {:a=>1}].uniq
#=> [{:a=>1}, {:a=>2}]