From: Traz Date: 2005-01-08T17:51:25+09:00 Subject: Re: Strange behavior of hash key >Because Hash uses Object#eql? to test for equality it makes them >different keys and hence your example fails. Matt, string keys have the same behaviour, no ? : >> "one".object_id => 22476232 >> "one".object_id => 22473868 >This behavior is changing in 1.9: Thank Joel ! So finaly, it was a bug in 1.8 ? -- Traz