Implement Step for NonZeroUxx · Issue #130 · rust-lang/libs-team (original) (raw)

Proposal

Problem statement

Ranges of non-zero unsigned integers does not contain zero, and should be step-able.

Motivation, use-cases

I want to iterate over a Range<NonZeroUsize>.

Solution sketches

It might be tricky to implement backward_checked properly since we cannot guarantee that the input usize is less than start.

It is also inconsistent that NonZeroIxx are not implemented.

What happens now?

This issue is part of the libs-api team API change proposal process. Once this issue is filed the libs-api team will review open proposals in its weekly meeting. You should receive feedback within a week or two.