Created
January 24, 2014 22:10
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Ruby change keys of a hash with a hash map.
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| ages = { "Bruce" => 32, "Clark" => 28 } | |
| mappings = {"Bruce" => "Bruce Wayne", "Clark" => "Clark Kent"} | |
| Hash[ages.map {|k, v| [mappings[k], v] }] |
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