From: John Maclean Date: 2006-02-12T22:13:08+09:00 Subject: immutable and enumerable? Every language and profession has it's own language. Ruby is no exception. Can someone explain to me what the two terms above mean and why they are so crucial to Ruby? Are they methods/classes ( don't think so) /modules/some other thing? -- John Maclean MSc (DIC) 07739 171 531