From: Joachim Wuttke Date: 2009-01-09T19:02:40+09:00 Subject: [ruby-core:21231] [Feature #994] Hash-order preservation should be declared a feature; documentation needs to be adapted Feature #994: Hash-order preservation should be declared a feature; documentation needs to be adapted http://redmine.ruby-lang.org/issues/show/994 Author: Joachim Wuttke Status: Open, Priority: Normal I would like to come back to a thread from March 2008 in comp.lang.ruby, http://groups.google.com/group/comp.lang.ruby/browse_thread/thread/5803482840ed66ca/7af75e86b1975224?hl=enaf75e86b1975224: For me, hash order preservation is an important advantage of Ruby 1.9; it allows me to generate human-readable YAML output without ugly workarounds. Matz said, it is now a guaranteed feature of CRuby; but at that time he was still cautious regarding Ruby-the-language. Maybe time has come to establish a consensus and to take a decision. It would give me security for the future of my code base. Once hash-order preservation is declared a feature, the following text in ri1.9 needs to be adapted: "The order in which you traverse a hash by either key or value may seem arbitrary, and will generally not be in the insertion order." ---------------------------------------- http://redmine.ruby-lang.org