std::ranges::chunk_view<V>::begin
< cpp | ranges | chunk view
V models only input_range |
||
|
constexpr __outer_iterator begin();
|
(1) | (since C++23) |
V models forward_range |
||
|
constexpr auto begin() requires (!__simple_view<V>);
|
(2) | (since C++23) |
|
constexpr auto begin() const requires ranges::forward_range<const V>;
|
(3) | (since C++23) |
Returns an iterator to the first element of the chunk_view.
Let
base_ denote the underlying view.1) Available only if V models
input_range. Equivalent to:
current_ = ranges::begin(base_); remainder_ = n_; return __outer_iterator(*this);
current_, remainder_, and n_ are underlying exposition only data members of chunk_view.2) Available if V models
forward_range. Equivalent to: return iterator<false>(this, ranges::begin(base_));, where iterator is exposition only nested class.3) Available if V models
forward_range. Equivalent to: return iterator<true>(this, ranges::begin(base_));, where iterator is exposition only nested class.Parameters
(none)
Return value
An iterator to the first element of the chunk_view, as described above.
Example
| This section is incomplete Reason: no example |
See also
|
(C++23)
|
returns an iterator or a sentinel to the end (public member function) |
|
(C++20)
|
returns an iterator to the beginning of a range (customization point object) |