std::ranges::view_interface<D>::cbegin
From cppreference.com
constexpr auto cbegin();
|
(1) | (since C++23) |
constexpr auto cbegin() const requires ranges::range<const D>;
|
(2) | (since C++23) |
The default implementation of cbegin() member function returns a constant beginning iterator of the range.
![[range-begin-end.svg]](https://upload.cppreference.com/mwiki/images/1/1b/range-begin-end.svg){kind=link}
1) Let
derived be a reference bound to static_cast<D&>(*this). Equivalent to
return ranges::cbegin(derived);.2) Same as (1), except that
derived is static_cast<const D&>(*this).Return value
A constant beginning iterator of the range.
Notes
All range adaptors and range factories in the standard library and std::ranges::subrange use the default implementation of cbegin.
| Feature-test macro | Value | Std | Feature |
|---|---|---|---|
__cpp_lib_ranges_as_const |
202207L |
(C++23) | Rectifying constant iterators, sentinels, and ranges. ranges::view_interface::cbegin() and ranges::view_interface::cend()
|
Example
| This section is incomplete Reason: no example |
See also
(C++11)(C++14) |
returns an iterator to the beginning of a container or array (function template) |
(C++20) |
returns an iterator to the beginning of a read-only range (customization point object) |