Do you really want the key to an associative container to be an optional value ? I would be hard-pressed to find a use for that.
Joe Gottman wrote: > It would be nice if boost::optional<T> had operator< defined > whenever operator< was defined for T. This would allow us to use > optional<T> as the key of an associative container. I suggest the > following semantics: > > bool operator<(optional<T> const &x, optional<T> const &y); > > Returns: If y is uninitialized, false. If y is initialized and x is > uninitialized, true. If x and y are both initialized, (*x < *y). > > > > This results in a strict weak ordering with uninitialized > optional<T> objects being sorted first. _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
