David Abrahams wrote: > Jaakko Jarvi <[EMAIL PROTECTED]> writes: > >> Where we've used enable_if, it has been very common that the >> condition is not just a single traits lookup, but rather a logical >> expression, e.g.: >> >> template <class T, class U> >> typename enable_if<is_matrix<T>::value && >> is_vector<U>::value,...>::type operator*(const T& t, const U& u); >> >> So definitely, this version of enable_if is needed. > > really? > > template <class T, class U> > typename enable_if<mpl::and<is_matrix<T>, is_vector<U> > >,...>::type operator*(const T& t, const U& u); > > looks better to me.
Sorry, no. If you deny me a non-broken enable_if, I'll just write one myself. I am not going to uglify my expressions for no good reason. _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
