std::ranges::chunk_view<V>::outer-iterator
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std::ranges::chunk_view
(C++26)
Classes for
input_ranges outer-iterator
class /*outer-iterator*/
(since C++23) (exposition only*)
The return type of chunk_view::begin if V models input_range.
Contents
[edit] Member types
Member type
Definition
iterator_concept
std::input_iterator_tag
difference_type
ranges::range_difference_t <V>
[edit] Data members
Member object
Definition
parent_ (private)
A pointer to the "parent object" of type ranges::chunk_view *(exposition-only member object*)
[edit] Member functions
[edit] Non-member functions
[edit] Nested classes
[edit] Example
Run this code
#include <iostream> #include <iterator> #include <ranges> #include <sstream> int main() { const std::string source{"ABCDEFGHIJ"}; auto letters = std::istringstream {source}; auto chunks = std::ranges::istream_view <char>(letters) | std::views::chunk (4); for (auto outer_iter = chunks.begin(); outer_iter != std::default_sentinel ; ++outer_iter) { auto chunk = *outer_iter; // chunk is an object of type // chunk_view::outer_iterator::value_type std::cout << '['; for (auto inner_iter = chunk.begin(); inner_iter != std::default_sentinel ; ++inner_iter) std::cout << *inner_iter; std::cout << "] "; } std::cout << '\n'; // The same output using range-for loops auto letters2 = std::istringstream {source}; auto chunks2 = std::ranges::istream_view <char>(letters2) | std::views::chunk (4); for (auto chunk : chunks2) { std::cout << '['; for (auto ch : chunk) std::cout << ch; std::cout << "] "; } std::cout << '\n'; }
Output:
[ABCD] [EFGH] [IJ] [ABCD] [EFGH] [IJ]
[edit] References
- C++23 standard (ISO/IEC 14882:2024):
- 26.7.28.3 Class chunk_view::outer-iterator [range.chunk.outer.iter]