[steveklabnik]

You maybe could write something like this:

  pub struct Fifo<T: AsMut<[u8]>> {

and then back it with an array. I learned this trick from whitequark.

(Though maybe if you want something other than a slice of bytes, this gets harder... I've used this trick for ringbuffers/mmio only, personally, so YMMV.)

That being said real const generics will make this way nicer, eventually.

[glandium]

There's also https://crates.io/crates/generic-array

[simias]

I wasn't aware of this trick, thank you for that. I guess if I have to implement another FIFO before const generics land I'll have an opportunity to try it out...