I was fiddling around with Queue the other day and realized it doesn't have an #each method. So I made one: https://github.com/ruby/ruby/pull/361 As for why, it makes for a convenient way to build consumer processes: ~~~ruby inq = Queue.new outq = Queue.new doubler = Thread.new do inq.each do |n| outq << n + n end end ~~~ My PR also returns an Enumerator when no block is given, and handles the non_block argument. I'm sure there's some good reason that this method wasn't there already, so feel free to explain. Also, this is my first Ruby feature ticket so please let me know if I'm missing any points of protocol. Thanks!