28 Apr
2008
28 Apr
'08
1:50 a.m.
on Fri Mar 07 2008, Steven Watanabe <watanabesj-AT-gmail.com> wrote:
AMDG
Giovanni Piero Deretta wrote:
It seems a perfect application for fold:
template<typename Seq> struct or_seq : mpl::apply< mpl::fold<mpl::_1, mpl::false_, mpl::quote2<mpl::or_> > , Seq > {};
template<typename Seq> struct and_seq : mpl::apply< mpl::fold<mpl::_1, mpl::true_, mpl::quote2<mpl::and_> > , Seq > {};
Not quite, because we want it to short circuit. Not to mention that quote2 will not work on and_ and or_.
Yeah, these should be rewritten in terms of mpl::find. Not sure why mpl::apply was used here either, though maybe I'm missign something. -- Dave Abrahams Boost Consulting http://boost-consulting.com