1 | |
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2 | // Copyright (C) 2009-2012 Lorenzo Caminiti |
3 | // Distributed under the Boost Software License, Version 1.0 |
4 | // (see accompanying file LICENSE_1_0.txt or a copy at |
5 | // http://www.boost.org/LICENSE_1_0.txt) |
6 | // Home at http://www.boost.org/libs/local_function |
7 | |
8 | #include "addable.hpp" |
9 | #include <boost/local_function.hpp> |
10 | #include <boost/type_traits/remove_reference.hpp> |
11 | #include <boost/concept_check.hpp> |
12 | #include <boost/detail/lightweight_test.hpp> |
13 | #include <algorithm> |
14 | |
15 | template<typename T> |
16 | T calculate(const T& factor) { |
17 | T sum = 0; |
18 | |
19 | void BOOST_LOCAL_FUNCTION_TPL( (const bind factor) (bind& sum) (T num) ) { |
20 | BOOST_CONCEPT_ASSERT((Addable<typename boost::remove_reference< |
21 | BOOST_LOCAL_FUNCTION_TYPEOF(sum)>::type>)); |
22 | sum += factor * num; |
23 | } BOOST_LOCAL_FUNCTION_NAME_TPL(add) |
24 | |
25 | add(6); |
26 | return sum; |
27 | } |
28 | |
29 | int main(void) { |
30 | BOOST_TEST(calculate(10) == 60); |
31 | return boost::report_errors(); |
32 | } |
33 | |
34 |