mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
21 lines
660 B
C++
21 lines
660 B
C++
#ifndef SPROUT_ALGORITHM_COUNT_IF_HPP
|
|
#define SPROUT_ALGORITHM_COUNT_IF_HPP
|
|
|
|
#include <iterator>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/iterator/operation.hpp>
|
|
|
|
namespace sprout {
|
|
// Copyright (C) 2011 RiSK (sscrisk)
|
|
|
|
// 25.2.9 Count
|
|
template<typename InputIterator, typename Predicate>
|
|
inline SPROUT_CONSTEXPR typename std::iterator_traits<InputIterator>::difference_type
|
|
count_if(InputIterator first, InputIterator last, Predicate pred) {
|
|
return first == last ? 0
|
|
: (pred(*first) ? 1 : 0) + sprout::count_if(sprout::next(first), last, pred)
|
|
;
|
|
}
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_ALGORITHM_COUNT_IF_HPP
|