memcpy() comparison: C, Rust, and D

[Tobias Müller via Digitalmars-d]

Tobias Müller <troplin at bluewin.ch> wrote:
> Walter Bright  
> But if you still wanted a memcpy it would probably look like this:
> 
> fn memcpy<'a, T>(dest: &'a mut [T], src: &[T]) -> &'a mut [T]

No, sorry:

fn memcpy<'a, T: Copy>(dest: &'a mut [T], src: &[T]) -> &'a mut [T]

And mutable references can never alias, you have the same guarantees as
with _restrict, statically checked even at the call site.