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// Range v3 library
//
// Copyright Eric Niebler 2014-present
//
// Use, modification and distribution is subject to 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)
//
// Project home: https://github.com/ericniebler/range-v3
#include <range/v3/core.hpp>
#include <range/v3/algorithm/count_if.hpp>
#include "../simple_test.hpp"
#include "../test_iterators.hpp"
struct S
{
int i;
};
struct T
{
bool b;
bool m() { return b; }
};
constexpr bool even(int i)
{
return i % 2 == 0;
}
int main()
{
using namespace ranges;
auto equals = [](int i){ return std::bind(equal_to{}, i, std::placeholders::_1); };
int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
constexpr auto cia = size(ia);
CHECK(count_if(InputIterator<const int*>(ia),
Sentinel<const int*>(ia + cia), equals(2)) == 3);
CHECK(count_if(InputIterator<const int*>(ia),
Sentinel<const int*>(ia + cia), equals(7)) == 0);
CHECK(count_if(InputIterator<const int*>(ia),
Sentinel<const int*>(ia), equals(2)) == 0);
CHECK(count_if(make_subrange(InputIterator<const int*>(ia),
Sentinel<const int*>(ia + cia)), equals(2)) == 3);
CHECK(count_if(make_subrange(InputIterator<const int*>(ia),
Sentinel<const int*>(ia + cia)), equals(7)) == 0);
CHECK(count_if(make_subrange(InputIterator<const int*>(ia),
Sentinel<const int*>(ia)), equals(2)) == 0);
S sa[] = {{0}, {1}, {2}, {2}, {0}, {1}, {2}, {3}};
constexpr auto csa = size(ia);
CHECK(count_if(InputIterator<const S*>(sa),
Sentinel<const S*>(sa + csa), equals(2), &S::i) == 3);
CHECK(count_if(InputIterator<const S*>(sa),
Sentinel<const S*>(sa + csa), equals(7), &S::i) == 0);
CHECK(count_if(InputIterator<const S*>(sa),
Sentinel<const S*>(sa), equals(2), &S::i) == 0);
CHECK(count_if(make_subrange(InputIterator<const S*>(sa),
Sentinel<const S*>(sa + csa)), equals(2), &S::i) == 3);
CHECK(count_if(make_subrange(InputIterator<const S*>(sa),
Sentinel<const S*>(sa + csa)), equals(7), &S::i) == 0);
CHECK(count_if(make_subrange(InputIterator<const S*>(sa),
Sentinel<const S*>(sa)), equals(2), &S::i) == 0);
T ta[] = {{true}, {false}, {true}, {false}, {false}, {true}, {false}, {false}, {true}, {false}};
CHECK(count_if(InputIterator<T*>(ta),
Sentinel<T*>(ta + size(ta)), &T::m) == 4);
CHECK(count_if(InputIterator<T*>(ta),
Sentinel<T*>(ta + size(ta)), &T::b) == 4);
CHECK(count_if(make_subrange(InputIterator<T*>(ta),
Sentinel<T*>(ta + size(ta))), &T::m) == 4);
CHECK(count_if(make_subrange(InputIterator<T*>(ta),
Sentinel<T*>(ta + size(ta))), &T::b) == 4);
{
using IL = std::initializer_list<int>;
STATIC_CHECK(ranges::count_if(IL{0, 1, 2, 1, 3, 1, 4}, even) == 3);
STATIC_CHECK(ranges::count_if(IL{1, 1, 3, 1}, even) == 0);
}
return ::test_result();
}
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