std::ranges::推論補助

namespace std::ranges {
  template<input_or_output_iterator I, sentinel_for<I> S>
  subrange(I, S) -> subrange<I, S>;

  template<input_or_output_iterator I, sentinel_for<I> S>
  subrange(I, S, make-unsigned-like-t<iter_difference_t<I>>) ->
    subrange<I, S, subrange_kind::sized>;

  template<borrowed_range R>
  subrange(R&&) ->
    subrange<iterator_t<R>, sentinel_t<R>, (sized_range<R> || sized_sentinel_for<sentinel_t<R>, iterator_t<R>>) ? subrange_kind::sized : subrange_kind::unsized>;

  template<borrowed_range R>
  subrange(R&&, make-unsigned-like-t<range_difference_t<R>>) ->
    subrange<iterator_t<R>, sentinel_t<R>, subrange_kind::sized>;
}

概要

subrangeクラステンプレートの型推論補助。

例

#include <ranges>
#include <concepts>

int main()
{
  int a[] = {1, 2, 3};
  std::ranges::subrange sub = a;
  static_assert(std::same_as<
    decltype(sub),
    std::ranges::subrange<int*, int*, std::ranges::subrange_kind::sized>
  >);
}

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#include <ranges>
#include <concepts>
​
int main()
{
  int a[] = {1, 2, 3};
  std::ranges::subrange sub = a;
  static_assert(std::same_as<
    decltype(sub),
    std::ranges::subrange<int*, int*, std::ranges::subrange_kind::sized>
  >);
}
​

Class / Function / Type

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std::ranges::推論補助

概要

例

出力

バージョン

言語

処理系

関連項目

参照