/gist:295978
Created Feb 5, 2010
| class Hash | |
| def hash_map() | |
| result = self.inject({}) do |hash, (k, v)| | |
| hash.merge(yield(k, v)) | |
| end | |
| end | |
| end | |
| {:a => 1, :b => 2}.hash_map {|k,v| {k.to_s*2, v*2}} # => {"aa"=>2, "bb"=>4} |
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