On 24 April 2017 at 18:36, Ola Fosheim Grøstad via Digitalmars-d <digitalmars-d@puremagic.com> wrote:

On Monday, 24 April 2017 at 04:21:36 UTC, Manu wrote:

Now, I'm not saying that rval references are the only solution here, just that I can overload the construction from an X for the rvalue and non-rvalue case, which is what I want...

What I've done in the past is simply to create a movable_ref pointer-type. AFAICT that would be similar to C++ "&&" except it isn't downgraded when used as a parameter (which is a language feature). C++ provide that downgrading so that programmers don't accidentally forward a reference as a movable reference without making it explicit.