Scala experimented[0] with implementing those in its standard library. I'm not sure if it made it in to the final release or not. EDIT It looks like it did ma

Scala experimented[0] with implementing those in its standard library. I'm not sure if it made it in to the final release or not. EDIT It looks like it did make it in: https://github.com/scala/scala/commit/d5ae93e1b35fac4002cfbffff9ec741356549e08 https://github.com/scala/scala/commit/d5ae93e1b35fac4002cfbf... [0] https://github.com/scala/collection-strawman/issues/192 https://github.com/scala/collection-strawman/issues/192