From: vicente.botet I was wondering whether the library could not define some more generic logical and comparison constraints so we can do
constrained<int, and_<greater_equal<int_<-10> >, less_equal<int_<10> > > > constrained<int, and_<greater_equal<ratio<1,4> >, less_equal<ratio<1,2> > > > constrained<int, and_<greater_equal<int_<0> >, less_equal<big_prime > > > constrained<int, and_<greater<int_<0> >, less_equal<int_<10> > > >
Similar thing, but based on lambdas, was already suggested by Gordon Woodhull and Stjepan Rajko was attempting to do this with Boost.Phoenix. I don't know if this functionality is already included in that library. That's the discussion: http://groups.google.com/group/boostusers/browse_thread/thread/91e63d27da5bd... Best regards, Robert