http://snippets.dzone.com/posts Sun, 18 May 2008 10:47:11 GMT DZone Snippets: collate code http://snippets.dzone.com/posts/show/4930 <br /><code> <br /> <br /># From: http://www.ruby-forum.com/topic/135807 <br /># Author: Nobuyoshi Nakada <br /> <br />class Hash <br /> def collate(h) <br /> raise ArgumentError unless h.is_a?(Hash) <br /> update(h) { |key, *values| values } <br /> #update(h) { |key, *values| values.flatten.uniq } <br /> end <br />end <br /> <br />h1 = {:a=>1, :b=>2 } <br />h2 = {:a=>3, :b=>4, :c=>5} <br />h1.collate(h2) <br />p h1, h2 <br />#=> {:b=>[2, 4], :a=>[1, 3], :c=>5} <br />#=> {:b=>4, :a=>3, :c=>5} <br /> <br />puts <br />h1 = {:a=>1, :b=>2 } <br />h2 = {:a=>3, :b=>4, :c=>5} <br />h2.collate(h1) <br />p h1, h2 <br />#=> {:b=>2, :a=>1} <br />#=> {:b=>[4, 2], :a=>[3, 1], :c=>5} <br /> <br /></code> <br /> <br /> Fri, 28 Dec 2007 11:50:03 GMT http://snippets.dzone.com/posts/show/4930 ntk ()