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RUBY: Recursive symbolize keys

/ Published in: Ruby
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Credit: http://pragmatig.wordpress.com/2009/04/14/recursive-symbolize_keys/

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  1. def recursive_symbolize_keys! hash
  2. hash.symbolize_keys!
  3.  hash.values.select{|v| v.is_a? Hash}.each{|h| recursive_symbolize_keys!(h)}
  4. end

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