iter_variants

cargo add iter_variants

Provides a trait IterVariants with one method iter_variants that takes one argument, an FnMut that is called on all variants of the given struct/enum. For exampe, bool::iter_variants(f) would call f(false) and f(true).

This is different to strum::EnumIter because this will iterate over all variants of contained data to any depth, and also works for structs, tuples, primitives and many core types.

There is a corresponding derive macro that implements IterVariants for enums and structs where all fields are either unit or only contain types that also implement IterVariants.

This crate is no_std.

Thanks to @A4-Tacks for work on generics and implementations for many core types.