Sprout/sprout/iterator/remove_if_iterator.hpp
bolero-MURAKAMI 9a593cbb81 fix reverse_iterator
support STL container: some algorithms
2013-01-20 08:53:20 +09:00

39 lines
1 KiB
C++

#ifndef SPROUT_ITERATOR_REMOVE_IF_ITERATOR_HPP
#define SPROUT_ITERATOR_REMOVE_IF_ITERATOR_HPP
#include <sprout/config.hpp>
#include <sprout/iterator/filter_iterator.hpp>
namespace sprout {
//
// remove_if_filter
//
template<typename Predicate>
class remove_if_filter {
public:
typedef bool result_type;
private:
Predicate pred_;
public:
SPROUT_CONSTEXPR remove_if_filter(Predicate pred)
: pred_(pred)
{}
template<typename U>
SPROUT_CONSTEXPR bool operator()(U const& value) const {
return !pred_(value);
}
};
//
// make_remove_if_iterator
//
template<typename Predicate, typename Iterator>
inline SPROUT_CONSTEXPR sprout::filter_iterator<sprout::remove_if_filter<Predicate>, Iterator>
make_remove_if_iterator(Predicate pred, Iterator it, Iterator last = Iterator()) {
return sprout::filter_iterator<sprout::remove_if_filter<Predicate>, Iterator>(
sprout::remove_if_filter<Predicate>(pred), it, last
);
}
} // namespace sprout
#endif // SPROUT_ITERATOR_REMOVE_IF_ITERATOR_HPP