Obscure Rust: reborrowing is a half-baked feature | Reddit

Obscure Rust: reborrowing is a half-baked feature

fn reborrow<'a, 'b, T>(r: &'a mut &'b mut T) -> &'a mut T {
    r
}

fn mutate(i: &mut u32) -> &mut u32 {
    *i += 1;
    i
}

fn mutate_twice(mut i: &mut u32) -> &mut u32 {
    mutate(reborrow(&mut i));
    mutate(i)
}

https://www.reddit.com/r/rust/comments/vl1gah/obscure_rust_reborrowing_is_a_halfbaked_feature/?utm_source=share&utm_medium=ios_app&utm_name=iossmf

Obscure Rust: reborrowing is a half-baked feature