Comment by moefh

Yes, I agree. Like I said, it might be useful when dealing with something that is easier to express in (tail) recursion form instead of an iteration.

Anyway, here's something more-or-less equivalent in Rust, which will blow the stack if made to loop too many times: https://play.rust-lang.org/?version=stable&mode=debug&editio...

(There may be a way to use a closure instead of a function to avoid hard-coding the type of `$i` in the macro, but I can't find an easy way to write a recursive closure call in Rust).