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Sprout/sprout/iterator/remove_iterator.hpp
2016-02-25 18:48:28 +09:00

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/*=============================================================================
Copyright (c) 2011-2016 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under 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)
=============================================================================*/
#ifndef SPROUT_ITERATOR_REMOVE_ITERATOR_HPP
#define SPROUT_ITERATOR_REMOVE_ITERATOR_HPP
#include <sprout/config.hpp>
#include <sprout/iterator/filter_iterator.hpp>
namespace sprout {
//
// remove_filter
//
template<typename T>
class remove_filter {
public:
typedef bool result_type;
private:
T value_;
public:
explicit SPROUT_CONSTEXPR remove_filter(T const& value)
: value_(value)
{}
template<typename U>
SPROUT_CONSTEXPR bool operator()(U const& value) const {
return value != value_;
}
};
//
// make_remove_iterator
//
template<typename T, typename Iterator>
inline SPROUT_CONSTEXPR sprout::filter_iterator<sprout::remove_filter<T>, Iterator>
make_remove_iterator(T const& value, Iterator it, Iterator last = Iterator()) {
return sprout::filter_iterator<sprout::remove_filter<T>, Iterator>(
sprout::remove_filter<T>(value), it, last
);
}
} // namespace sprout
#endif // SPROUT_ITERATOR_REMOVE_ITERATOR_HPP