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// Range v3 library
//
// Copyright Jeff Garland 2017
//
// 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
//
///[count_if]
// This example counts element of a range that match a supplied predicate.
// output
// vector: 2
// array: 2
#include <array>
#include <iostream>
#include <range/v3/algorithm/count_if.hpp> // specific includes
#include <vector>
using std::cout;
auto is_six = [](int i) -> bool { return i == 6; };
int
main()
{
std::vector<int> v{6, 2, 3, 4, 5, 6};
auto c = ranges::count_if(v, is_six);
cout << "vector: " << c << '\n'; // 2
std::array<int, 6> a{6, 2, 3, 4, 5, 6};
c = ranges::count_if(a, is_six);
cout << "array: " << c << '\n'; // 2
}
///[count_if]
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