This is pretty cool and will definitely simplify some of my code. It's worth mentioning that there is an RFC discussion for first-class support optional (or ke

This is pretty cool and will definitely simplify some of my code. It's worth mentioning that there is an RFC discussion for first-class support optional (or keyworded) arguments here: https://github.com/rust-lang/rfcs/issues/323 https://github.com/rust-lang/rfcs/issues/323