tools/range.hpp

• View this file on GitHub
• Last update: 2023-07-08 14:12:19+09:00
• Include: #include "tools/range.hpp"

Depends on

• tools/base.hpp

Code

#pragma once

#include "./base.hpp"

#include <iterator>
#include <type_traits>
#include <vector>

namespace matumoto {
  // begin,endを持つ構造体
  template <typename Iterator>
  class Range {
    const Iterator begin_;
    const Iterator end_;

  public:
    Range(Iterator &&b, Iterator &&e) noexcept: begin_(forward<Iterator>(b)), end_(forward<Iterator>(e)) {}

    Iterator begin() const noexcept {
      return begin_;
    }

    Iterator end() const noexcept {
      return end_;
    }
  }; // class Range

  template <typename Iterator>
  Range<Iterator> make_range(Iterator &&begin, Iterator &&end) noexcept {
    return Range<Iterator>{ forward<Iterator>(begin), forward<Iterator>(end) };
  }

  // initiaizer_list用
  template <typename T>
  decltype(auto) make_reversed_range(const initializer_list<T> &init_list) noexcept {
    return make_range(rbegin(init_list), rend(init_list));
  }

  // rbegin,rendを持っている方
  template <typename T>
  decltype(auto) make_reversed_range(T &&container) noexcept {
    return make_range(rbegin(container), rend(container));
  }
} // namespace matumoto

#line 2 "tools/range.hpp"

#line 2 "tools/base.hpp"

namespace matumoto {
  using namespace std;
}
#line 4 "tools/range.hpp"

#include <iterator>
#include <type_traits>
#include <vector>

namespace matumoto {
  // begin,endを持つ構造体
  template <typename Iterator>
  class Range {
    const Iterator begin_;
    const Iterator end_;

  public:
    Range(Iterator &&b, Iterator &&e) noexcept: begin_(forward<Iterator>(b)), end_(forward<Iterator>(e)) {}

    Iterator begin() const noexcept {
      return begin_;
    }

    Iterator end() const noexcept {
      return end_;
    }
  }; // class Range

  template <typename Iterator>
  Range<Iterator> make_range(Iterator &&begin, Iterator &&end) noexcept {
    return Range<Iterator>{ forward<Iterator>(begin), forward<Iterator>(end) };
  }

  // initiaizer_list用
  template <typename T>
  decltype(auto) make_reversed_range(const initializer_list<T> &init_list) noexcept {
    return make_range(rbegin(init_list), rend(init_list));
  }

  // rbegin,rendを持っている方
  template <typename T>
  decltype(auto) make_reversed_range(T &&container) noexcept {
    return make_range(rbegin(container), rend(container));
  }
} // namespace matumoto

Back to top page