Return a reverse iterator providing non‐modifiable access to the last element in this deque, and the past‐the‐end reverse iterator if this deque is empty.
Synopsis
Declared in <bslstl_deque.h>
Deque_Base<VALUE_TYPE>::const_reverse_iterator
crbegin() const noexcept;
Return Value
const reverse iterator to the last element, or past‐the‐end if empty
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