| /*============================================================================= |
| Copyright (c) 2001-2011 Joel de Guzman |
| Copyright (c) 2005 Eric Niebler |
| |
| 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) |
| ==============================================================================*/ |
| #include <boost/detail/lightweight_test.hpp> |
| #include <boost/fusion/container/vector/vector.hpp> |
| #include <boost/fusion/adapted/mpl.hpp> |
| #include <boost/fusion/algorithm/query/count_if.hpp> |
| #include <boost/mpl/vector_c.hpp> |
| #include <functional> |
| |
| template <typename F> struct bind1st; |
| template <template <typename> class F, typename T> |
| struct bind1st<F<T> > : public F<T> |
| { |
| T n; |
| bind1st(T n) : n(n) { } |
| bool operator()(T v) const { return F<T>::operator()(n, v); } |
| }; |
| |
| int |
| main() |
| { |
| { |
| boost::fusion::vector<int, short, double> t(1, 2, 3.3); |
| BOOST_TEST(boost::fusion::count_if(t, bind1st<std::equal_to<double> >(2)) == 1); |
| } |
| |
| { |
| boost::fusion::vector<int, short, double> t(1, 2, 3.3); |
| BOOST_TEST(boost::fusion::count_if(t, bind1st<std::equal_to<double> >(3)) == 0); |
| } |
| |
| { |
| typedef boost::mpl::vector_c<int, 1, 2, 3> mpl_vec; |
| // Cannot use lambda here as mpl iterators return rvalues and lambda needs lvalues |
| BOOST_TEST(boost::fusion::count_if(mpl_vec(), bind1st<std::greater_equal<int> >(2)) == 2); |
| BOOST_TEST(boost::fusion::count_if(mpl_vec(), bind1st<std::less<int> >(2)) == 1); |
| } |
| |
| return boost::report_errors(); |
| } |
| |