It’s already in userspace, though nightly (and unsafe, obviously), so whether it’ll be stabilised, and in what form, is an open question: https://doc.rust-lang.

It’s already in userspace, though nightly (and unsafe, obviously), so whether it’ll be stabilised, and in what form, is an open question: https://doc.rust-lang.org/std/iter/trait.TrustedLen.html https://doc.rust-lang.org/std/iter/trait.TrustedLen.html