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1 | /*============================================================================= |
2 | Copyright (c) 2001-2011 Joel de Guzman | |
3 | Copyright (c) 2005 Eric Niebler | |
4 | ||
5 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
6 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
7 | ==============================================================================*/ | |
8 | #include <boost/detail/lightweight_test.hpp> | |
9 | #include <boost/fusion/container/vector/vector.hpp> | |
10 | #include <boost/fusion/adapted/mpl.hpp> | |
11 | #include <boost/fusion/algorithm/query/count_if.hpp> | |
7c673cae FG |
12 | #include <boost/mpl/vector_c.hpp> |
13 | #include <functional> | |
14 | ||
b32b8144 FG |
15 | template <typename F> struct bind1st; |
16 | template <template <typename> class F, typename T> | |
17 | struct bind1st<F<T> > : public F<T> | |
18 | { | |
19 | T n; | |
20 | bind1st(T n) : n(n) { } | |
21 | bool operator()(T v) const { return F<T>::operator()(n, v); } | |
22 | }; | |
23 | ||
7c673cae FG |
24 | int |
25 | main() | |
26 | { | |
27 | { | |
28 | boost::fusion::vector<int, short, double> t(1, 2, 3.3); | |
b32b8144 | 29 | BOOST_TEST(boost::fusion::count_if(t, bind1st<std::equal_to<double> >(2)) == 1); |
7c673cae FG |
30 | } |
31 | ||
32 | { | |
33 | boost::fusion::vector<int, short, double> t(1, 2, 3.3); | |
b32b8144 | 34 | BOOST_TEST(boost::fusion::count_if(t, bind1st<std::equal_to<double> >(3)) == 0); |
7c673cae FG |
35 | } |
36 | ||
37 | { | |
38 | typedef boost::mpl::vector_c<int, 1, 2, 3> mpl_vec; | |
39 | // Cannot use lambda here as mpl iterators return rvalues and lambda needs lvalues | |
b32b8144 FG |
40 | BOOST_TEST(boost::fusion::count_if(mpl_vec(), bind1st<std::greater_equal<int> >(2)) == 2); |
41 | BOOST_TEST(boost::fusion::count_if(mpl_vec(), bind1st<std::less<int> >(2)) == 1); | |
7c673cae FG |
42 | } |
43 | ||
44 | return boost::report_errors(); | |
45 | } | |
46 |