"let mut buf = [0u8; 16]; // we..." <- > <@jamesmunns:beeper.com> ```rust > let mut buf = [0u8; 16]; // we want to fill this > let mut window = buf.as_mut_slice(); > > while !window.is_empty() { > match input.read(window) { > Ok(n) => { > let (_old, now) = window.split_at_mut(n); > window = now; > } > Err(e) => ..., > } > } > ``` any idea on the performance of `take`? i guess its like