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- /*=============================================================================
- 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();
- }
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