It seems that the performance difference has little to do with temporary objects, but is to be fixed 2.11 anyway: https://groups.google.com/forum/#!msg/scala-in

It seems that the performance difference has little to do with temporary objects, but is to be fixed 2.11 anyway: https://groups.google.com/forum/#!msg/scala-internals/Fw37NmUUiqs/k9jxMXDYEhYJ https://groups.google.com/forum/#!msg/scala-internals/Fw37Nm...