John Backus 3e8543de65 Add mutation Hash#fetch -> Hash#key? ... Fixes #457		2015-12-25 15:43:13 -05:00
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mutant	Add mutation Hash#fetch -> Hash#key?	2015-12-25 15:43:13 -05:00
mutant.rb	Reduce direct reference of globals	2015-11-21 22:02:51 +00:00