// (C) Copyright John Maddock 2018. // Use, modification and distribution are subject to 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) #ifndef BOOST_MATH_TOOLS_IS_CONST_ITERABLE_HPP #define BOOST_MATH_TOOLS_IS_CONST_ITERABLE_HPP #include <boost/math/tools/cxx03_warn.hpp> #define BOOST_MATH_HAS_IS_CONST_ITERABLE #include <boost/math/tools/is_detected.hpp> #include <utility> namespace boost { namespace math { namespace tools { namespace detail { template<class T> using begin_t = decltype(std::declval<const T&>().begin()); template<class T> using end_t = decltype(std::declval<const T&>().end()); template<class T> using const_iterator_t = typename T::const_iterator; template <class T> struct is_const_iterable : public std::integral_constant<bool, is_detected<begin_t, T>::value && is_detected<end_t, T>::value && is_detected<const_iterator_t, T>::value > {}; } } } } #endif // BOOST_MATH_TOOLS_IS_CONST_ITERABLE_HPP