On Sun, 25 Mar 2012, Marc Glisse wrote:
- a first goal is simple functions, with a single return statement (which may
even often be the only statement).
After playing with it a bit, I am not sure how to use it in the simple
forwarding case:
T f(int);
auto g(int i){return f(i);}
If T is a reference, this does a copy.
auto&& g(int i){return f(i);}
Now if T is not a reference, this returns a reference to a destroyed
temporary.
So I am back to writing the following, which is precisely what we never
want to write:
auto g(int i)->decltype(f(i)){return f(i);}
Maybe having just auto (no auto const&, auto&& and others) without
stripping cv-ref from it would work better in this case? It would have
drawbacks in other cases...
I guess the discussion should happen on a different forum once the
proposal is published...
--
Marc Glisse
