Can not use the mtr_rref_t types

[aconstlink]

Unfortunately, the idea to pass managed pointers by value or by rref does not work because the compiler will complains about ambiguous overloads.

So we can not do something like this:

void_t some_funk( some_mtr_t ) ...
// ...
void_t some_funk( some_mtr_rref_t ) ...

Calling some_funk with a managed pointer will fail in compilation.

So there need to be some wrapper, so we can solve the moved managed pointer situation into some function and out of some function.

I propose something like this:

template< typename T >
class mtr_moved ;

So moved managed pointers could be noted like so

mtr_moved<some_class> some_funk() ...
// or
void_t some_funk( mtr_moved<some_class> ) ...

That would definitely solve the distinction problem.

Even more conveniently, we could make a movefunction so there is no need to write out mtr_moved<...> in any way:

some_funk( motor::move(some_mtr) ) ;