From: David Abrahams (dave_at_[hidden])
Date: 2003-02-24 16:24:10
"Fernando Cacciola \(Home\)" <fernando_cacciola_at_[hidden]> writes:
> optional<Window> opt( in_place<Window>(point(0,0),point(10,10)));
>
> here, in_place() is used to forward T's ctor argument to optional<> so that
> T is effectively constructed in-place right within the aligned storage.
>
> Is this what you want?
I have to say that I like the idea of using placement-new with an
optional<> argument better, since it doesn't get you involved with
the const ref/non-const ref/rvalue forwarding problem.
-- Dave Abrahams Boost Consulting www.boost-consulting.com