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- // Copyright (C) 2009-2012 Lorenzo Caminiti
- // Distributed under the Boost Software License, Version 1.0
- // (see accompanying file LICENSE_1_0.txt or a copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- // Home at http://www.boost.org/libs/local_function
- #include <boost/config.hpp>
- #ifdef BOOST_NO_CXX11_VARIADIC_MACROS
- # error "variadic macros required"
- #else
- #include "addable.hpp"
- #include <boost/local_function.hpp>
- #include <boost/type_traits/remove_reference.hpp>
- #include <boost/concept_check.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #include <algorithm>
- //[typeof_template
- template<typename T>
- T calculate(const T& factor) {
- T sum = 0;
- void BOOST_LOCAL_FUNCTION_TPL(const bind factor, bind& sum, T num) {
- // Local function `TYPEOF` does not need `typename`.
- BOOST_CONCEPT_ASSERT((Addable<typename boost::remove_reference<
- BOOST_LOCAL_FUNCTION_TYPEOF(sum)>::type>));
- sum += factor * num;
- } BOOST_LOCAL_FUNCTION_NAME_TPL(add)
- add(6);
- return sum;
- }
- //]
- int main(void) {
- BOOST_TEST(calculate(10) == 60);
- return boost::report_errors();
- }
- #endif // VARIADIC_MACROS
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