[/ Copyright 2020 Glen Joseph Fernandes (glenjofe@gmail.com) Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt). ] [section:disjunction disjunction] template<class... T> struct disjunction; __inherit Inherits from the first type `U` in the list for which `bool(U::value)` is `true`, or the last type in the list if there is no such type. If `sizeof...(T)` is `0` then inherits from `__false_type`. __header `#include <boost/type_traits/disjunction.hpp>` [all_compilers] In the absence of variadic-template support, `disjunction` has only 2 parameters. __examples [:Given: `template<int N> struct Int { static const int value = N };` ] [:`disjunction<>` inherits from `__false_type`.] [:`disjunction<Int<1> >` inherits from `Int<1>`.] [:`disjunction<Int<1>, Int<2>, Int<3> >` inherits from `Int<1>`.] [:`disjunction<Int<0>, Int<2>, Int<3> >` inherits from `Int<2>`.] [endsect]