operator==,<=>(ranges::cartesian_product_view::iterator)

 

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範圍庫 (Ranges library)

範圍訪問 開始 cbegin   結束 cend rbegin crbegin   rend crend 大小 ssize   資料 cdata reserve_hint (C++26)   空

範圍轉換 (Range conversions) std::from_range_t std::from_range (C++23)(C++23)     to (C++23)

懸空迭代器處理 (Dangling iterator handling) 懸垂 borrowed_iterator_t borrowed_subrange_t

範圍原語 (Range primitives)
range_size_trange_difference_trange_value_t elements_of (C++23)	iterator_tconst_iterator_tsentinel_tconst_sentinel_t (C++23)(C++23)	range_reference_trange_const_reference_trange_rvalue_reference_trange_common_reference_t (C++23)

範圍概念 (Range concepts)
範圍 借用範圍    common_range	有大小範圍 可檢視範圍    檢視	輸入範圍 輸出範圍 向前範圍	雙向範圍    隨機訪問範圍 連續範圍	近似大小範圍 (C++26) 常量範圍 (C++23)

檢視
檢視介面	子範圍

範圍工廠 (Range factories)
empty_viewviews::empty	single_viewviews::single	basic_istream_viewviews::istream	iota_viewviews::iota	repeat_viewviews::repeat (C++23)(C++23)

範圍介面卡 (Range adaptors)
views::all_tviews::all as_rvalue_viewviews::as_rvalue (C++23)(C++23)   filter_viewviews::filter transform_viewviews::transform take_viewviews::take take_while_viewviews::take_while common_viewviews::common views::counted to_input_viewviews::to_input (C++26)(C++26)	ref_view drop_viewviews::drop drop_while_viewviews::drop_while lazy_split_viewviews::lazy_split split_viewviews::split join_viewviews::join join_with_viewviews::join_with (C++23)(C++23)   concat_viewviews::concat (C++26)(C++26) cache_latest_viewviews::cache_latest (C++26)(C++26)	owning_view reverse_viewviews::reverse as_const_viewviews::as_const (C++23)(C++23) elements_viewviews::elements keys_viewviews::keys values_viewviews::values enumerate_viewviews::enumerate (C++23)(C++23) zip_viewviews::zip (C++23)(C++23) zip_transform_viewviews::zip_transform (C++23)(C++23)	adjacent_viewviews::adjacent (C++23)(C++23) views::pairwise (C++23) adjacent_transform_viewviews::adjacent_transform (C++23)(C++23) views::pairwise_transform (C++23) chunk_viewviews::chunk (C++23)(C++23) slide_viewviews::slide (C++23)(C++23) chunk_by_viewviews::chunk_by (C++23)(C++23) stride_viewviews::stride (C++23)(C++23) cartesian_product_viewviews::cartesian_product (C++23)(C++23)

範圍生成器 (Range generators) std::generator (C++23)

範圍介面卡閉包物件 (Range adaptor closure objects) range_adaptor_closure (C++23)

範圍介面卡物件 (Range adaptor objects)

輔助項 (Helper items)
copyable-box movable-box (直到 C++23)  (C++23)	simple-view non-propagating-cache

 

std::ranges::cartesian_product_view

成員函式

cartesian_product_view::cartesian_product_view

cartesian_product_view::begin

cartesian_product_view::end

cartesian_product_view::size

推導指引

迭代器 (Iterator)

成員函式

cartesian_product_view::iterator::iterator

cartesian_product_view::iterator::operator*

cartesian_product_view::iterator::operator[]

cartesian_product_view::iterator::operator++ cartesian_product_view::iterator::operator++(int) cartesian_product_view::iterator::operator-- cartesian_product_view::iterator::operator--(int) cartesian_product_view::iterator::operator+= cartesian_product_view::iterator::operator-=

cartesian_product_view::iterator::next

cartesian_product_view::iterator::prev

cartesian_product_view::iterator::distance_from

非成員函式

operator==(cartesian_product_view::iterator) operator<=>(cartesian_product_view::iterator)

operator+(cartesian_product_view::iterator) operator-(cartesian_product_view::iterator)

iter_move(cartesian_product_view::iterator)

iter_swap(cartesian_product_view::iterator)

 

friend constexpr bool operator==( const /*iterator*/& x, const /*iterator*/& y )     requires std::equality_comparable<ranges::iterator_t</*maybe-const*/<Const, First>>>;	(1)	(C++23 起)
friend constexpr bool operator==( const /*iterator*/& x, std::default_sentinel_t );	(2)	(C++23 起)
friend constexpr auto operator<=>( const /*iterator*/& x, const /*iterator*/& y )     requires /*all-random-access*/<Const, First, Vs...>;	(2)	(C++23 起)

比較兩個迭代器，或一個迭代器和一個哨位。

令 current_ 代表底層的迭代器元組。

1) 等價於：return x.current_ == y.current_;

2) 若對於任意整數 0 ≤ i ≤ sizeof...(Vs)，std::get<i>(x.current_) == ranges::end(std::get<i>(x.parent_->bases_)) 為 true，則返回 true。否則返回 false。

3) 等價於：return x.current_ <=> y.current_;

這些函式對通常的無限定或限定查詢不可見，只能在 std::ranges::cartesian_product_view::iterator<Const> 是引數的關聯類時透過實參依賴查詢找到。

!= 運算子由 operator== 合成。

引數

x, y

-

要比較的迭代器或哨位

返回值

比較結果。

參閱

operator== (C++23)

將哨位與 cartesian_product_view::begin 所返回的迭代器進行比較 (函式)