ceph/src/boost/libs/fusion/test/algorithm/count_if.cpp

   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>
  12 #include <boost/lambda/lambda.hpp>
  13 #include <boost/mpl/vector_c.hpp>
  14 #include <functional>
  15
  16 int
  17 main()
  18 {
  19     {
  20         boost::fusion::vector<int, short, double> t(1, 2, 3.3);
  21         BOOST_TEST(boost::fusion::count_if(t, boost::lambda::_1 == 2) == 1);
  22     }
  23
  24     {
  25         boost::fusion::vector<int, short, double> t(1, 2, 3.3);
  26         BOOST_TEST(boost::fusion::count_if(t, boost::lambda::_1 == 3) == 0);
  27     }
  28
  29     {
  30         typedef boost::mpl::vector_c<int, 1, 2, 3> mpl_vec;
  31         // Cannot use lambda here as mpl iterators return rvalues and lambda needs lvalues
  32         BOOST_TEST(boost::fusion::count_if(mpl_vec(), std::bind2nd(std::less_equal<int>(), 2)) == 2);
  33         BOOST_TEST(boost::fusion::count_if(mpl_vec(), std::bind2nd(std::greater<int>(), 2)) == 1);
  34     }
  35
  36     return boost::report_errors();
  37 }
  38