std::ranges::chunk_view<V>:: inner-iterator

From cppreference.com
C++
Ranges library
Range adaptors
std::ranges::chunk_view
Member functions
Classes for input_range s
Deduction guides
outer-iterator
outer-iterator ::value_type
inner-iterator
class /*inner-iterator*/
(since C++23)
( exposition only* )

The return type of chunk_view:: outer-iterator ::value_type::begin if V models input_range .

Member types

Member type Definition
iterator_concept std:: input_iterator_tag
difference_type ranges:: range_difference_t < V >
value_type ranges:: range_value_t < V >

Data members

Member object Definition
parent_ (private) A pointer to the "parent object" of type ranges:: chunk_view * .
( exposition-only member object* )

Member functions

(C++23)
constructs an iterator
(public member function)
(C++23)
move assigns another iterator
(public member function)
(C++23)
returns an iterator to the current element
(public member function)
(C++23)
accesses the element
(public member function)
(C++23)
increments the iterator
(public member function)

Non-member functions

(C++23)
compares the iterator with default sentinel
(function)
(C++23)
calculates the remained number of elements
(function)
(C++23)
casts the result of dereferencing the underlying iterator to its associated rvalue reference type
(function)
(C++23)
swaps the objects pointed to by two underlying iterators
(function)

Example

Run this code 
#include <iostream>
#include <iterator>
#include <ranges>
#include <sstream>
 
int main()
{
    auto letters = std::istringstream{"ABCDEFGHIJK"};
 
    auto chunks = std::ranges::istream_view<char>(letters)
                | std::views::chunk(4);
 
    for (auto chunk : chunks)
    {
        // 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';
}

Output: 

[ABCD] [EFGH] [IJK]

References

  • C++23 standard (ISO/IEC 14882:2024):
  • 26.7.28.5 Class chunk_view:: inner-iterator [range.chunk.inner.iter]

See also

Retrieved from " https://en.cppreference.com/mwiki/index.php?title=cpp/ranges/chunk_view/inner_iterator&oldid=160869 "