Ruby hashes are currently ordered and have been for quite a while now. Ruby 1.9 maybe?
But back in the day they indeed were not, for appropriate values of back in the day. :)
it did make a LOT of things more convenient and less buggy when they made ruby hashes ordered, I recall. I didn't expect it would matter much, by found myself loving it. I believe the ruby maintainers investigated and determined they could do it with very little performance hit. It turns out that having a repeatable and predictable order, that also matches insertion order, is what a lot of people end up assuming whether they realize it or not, just makes everything smoother when it is.
But back in the day they indeed were not, for appropriate values of back in the day. :)
it did make a LOT of things more convenient and less buggy when they made ruby hashes ordered, I recall. I didn't expect it would matter much, by found myself loving it. I believe the ruby maintainers investigated and determined they could do it with very little performance hit. It turns out that having a repeatable and predictable order, that also matches insertion order, is what a lot of people end up assuming whether they realize it or not, just makes everything smoother when it is.