47 lines
1.6 KiB
C++
47 lines
1.6 KiB
C++
/*=============================================================================
|
|
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();
|
|
}
|
|
|