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.
derived be a reference bound to static_cast<D&>(*this).return ranges::cbegin(derived);.derived is static_cast<const D&>(*this).(none).
A constant beginning iterator of the range.
All range adaptors and range factories in the standard library and std::ranges::subrange use the default implementation of cbegin.
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(C++11)(C++14) | returns an iterator to the beginning of a container or array (function template) |
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(C++20) | returns an iterator to the beginning of a read-only range (customization point object) |
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