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- //===----------------------------------------------------------------------===//
- //
- // The LLVM Compiler Infrastructure
- //
- // This file is dual licensed under the MIT and the University of Illinois Open
- // Source Licenses. See LICENSE.TXT for details.
- //
- //===----------------------------------------------------------------------===//
- // <algorithm>
- // template<InputIterator Iter, Predicate<auto, Iter::value_type> Pred>
- // requires CopyConstructible<Pred>
- // Iter::difference_type
- // count_if(Iter first, Iter last, Pred pred);
- #include <algorithm>
- #include <functional>
- #include <cassert>
- #include "test_iterators.h"
- int main()
- {
- int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
- const unsigned sa = sizeof(ia)/sizeof(ia[0]);
- assert(std::count_if(input_iterator<const int*>(ia),
- input_iterator<const int*>(ia + sa),
- std::bind2nd(std::equal_to<int>(),2)) == 3);
- assert(std::count_if(input_iterator<const int*>(ia),
- input_iterator<const int*>(ia + sa),
- std::bind2nd(std::equal_to<int>(),7)) == 0);
- assert(std::count_if(input_iterator<const int*>(ia),
- input_iterator<const int*>(ia),
- std::bind2nd(std::equal_to<int>(),2)) == 0);
- }
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