David Abrahams wrote: > "Fernando Cacciola" <[EMAIL PROTECTED]> writes: > >> No, right're right :-) >> Is perfectly possible to simply discard it, though to me it looks >> kind of akward in anything but deeply low-level code. >> >> Anyway, doesn't this require a definition of placement operator new >> for each T? > > I don't know, possibly so. It's been so long I've forgotten more than > I ever knew ;-)
It only requires template<class T> void * operator new(size_t n, optional<T> & t); I think. One problem is that there is no reliable way to prevent optional<X> opt; new(opt) Y; // oops since the type being created is not communicated to operator new, only its size is. _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
