Hi -- On Tue, 3 Jun 2008, Akinori MUSHA wrote: > At Tue, 3 Jun 2008 13:39:10 +0900, > I wrote: >> Sounds reasonable, considering in addition that Array#map and >> Array#select supports subclasses. > > Turns out it was wrong.. I'll back out the change. I believe you but I'm curious what you decided was wrong about it. Was it that it would make Set the only class that didn't #map back to an array? (On reflection I probably agree that having exactly one such class is worse than having none.) David -- Rails training from David A. Black and Ruby Power and Light: INTRO TO RAILS June 9-12 Berlin ADVANCING WITH RAILS June 16-19 Berlin See http://www.rubypal.com for details and updates!