disjunction#

Fully qualified name: carb::cpp::disjunction

template<typename ...B> struct disjunction : public detail::disjunction_impl<B...>#

A disjunction is the logical or of all B traits.

An empty list results in a false value. This metafunction is short-circuiting.

Template Parameters:: B – The series of traits to evaluate the value member of. Each B must have a member constant value which is convertible to bool. Use of cpp::bool_constant is helpful here.