rvalue references

[via Digitalmars-d]

On Wednesday, 3 June 2015 at 09:53:36 UTC, Namespace wrote:
>> This code needs to be disallowed under DIP25 (or whatever the 
>> final DIP will be), of course.
>
> But should work with return ref instead.

It can even be allowed with an extension to DIP25:

struct Sprite {
     private Texture* _tex;

     this(ref Texture tex return(this)) {
         _tex = &tex;
     }
}

`return(param)` (or e.g. `out(param)`) means that the reference 
can escape through `param`.

The method can't accept an rvalue ref then, of course.