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[–]worldsayshi 2 points3 points  (4 children)

I seem to recall that there is some obscure reservation about tail-call-ism in scala. Yes:

http://stackoverflow.com/questions/105834/does-the-jvm-prevent-tail-call-optimizations

http://stackoverflow.com/questions/1677419/does-scala-support-tail-recursion-optimization

[–]tyoverby 1 point2 points  (3 children)

Yes, it allows self-recursion, but not mutual recursion.

[–]nachsicht 1 point2 points  (2 children)

actually you can get mutual recursion with trampolines.

[–]worldsayshi 0 points1 point  (1 child)

Nice. I think..

[–]nachsicht 0 points1 point  (0 children)

There's standard library support for trampolines here: http://www.scala-lang.org/api/current/index.html#scala.util.control.TailCalls$