std::ranges::split_view 的推導指南

 

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符號索引

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範圍庫 (Ranges library)

範圍訪問 begin cbegin   end cend rbegin crbegin   rend crend size ssize   data cdata reserve_hint (C++26)   empty

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) dangling 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)
range borrowed_range    common_range	sized_range viewable_range    view	input_range output_range forward_range	bidirectional_range    random_access_range contiguous_range	approximately_sized_range (C++26) constant_range (C++23)

檢視
view_interface	subrange

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::split_view

成員函式

split_view::split_view

split_view::base

split_view::begin

split_view::end

split_view::find_next

巢狀類

split_view::iterator

split_view::sentinel

推導指引

 

template< class R, class P > split_view( R&&, P&& )     -> split_view<views::all_t<R>, views::all_t<P>>;	(1)	(C++20 起)
template< ranges::input_range R > split_view( R&&, ranges::range_value_t<R> )     -> split_view<views::all_t<R>, ranges::single_view<ranges::range_value_t<R>>>;	(2)	(C++20 起)

為 split_view 提供了這些推導指南，以允許從一個範圍和一個分隔符進行推導。

1) 分隔符是元素範圍。

2) 分隔符是單個元素。

示例

執行此程式碼

#include <ranges>
#include <string_view>
#include <type_traits>
using std::operator""sv;
 
int main() {
    std::ranges::split_view w1{"a::b::c"sv, "::"sv};
    static_assert(std::is_same_v<
        decltype(w1),
        std::ranges::split_view<std::string_view, std::string_view>>);
 
    std::ranges::split_view w2{"x,y,z"sv, ','};
    static_assert(std::is_same_v<
        decltype(w2),
        std::ranges::split_view<std::string_view, std::ranges::single_view<char>>>);
}