[nyanpasu64]

> If I have a raw pointer to an array of data (*mut T), I can turn it into a slice &mut [T], and I get to use a for ... in loop on it or any of the handy iterators (.for_each(), .map(), etc.).

I wonder if *mut [u8] would be a workable alternative to &mut [u8]. I haven't looked into creating such pointers yet, but `fn f(a: *mut [u8]) {}` is legal while `fn f(a: *mut [u8]) { a.len(); }` doesn't compile on stable due to https://github.com/rust-lang/rust/issues/71146. Looks like raw slice pointers aren't fully baked yet.