Move semantics?

[BitPuffin]

I was just thinking about how it could be useful to have rvalue overloading and move semantics in this language so that unique_ptr from C++ could be implemented. I know that there's shared-ptr in this language but reference counting has some undesirable overhead at times :)

[tomhrr]

I think this is a good idea, and should be able to implement something along the lines of what's in C++ without too much trouble. (Roughly: an additional rv-ref parameter type, move-copy and move-assign operations, a way to specify that certain copy/assign operations aren't permitted for a given type, and possible subsuming of retvals within the rv-ref concept.)

[tomhrr]

Done, except that retvals have been left alone, since there's no compelling reason to change them. This work helped to tidy up the internals around copying quite a bit, too, so thanks for the suggestion.

[BitPuffin]

That's cool that you implemented it. I will probably give it a spin soon!