Return a reverse iterator before the first character of the string.
Synopsis
Declared in <bslstl_stringref.h>
Description
Return an STL‐compatible reverse iterator to the prior‐to‐the‐beginning character of the string bound to this string reference or rbegin() if the string reference is empty. The iterator remains valid as long as this object is valid and is bound to the same string.
Return Value
past‐the‐end reverse iterator
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