Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Return a reverse iterator to the first element of the reversed container.

object::reverse_iterator
rbegin() noexcept;
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Return a const reverse iterator to the first element of the reversed container.

object::const_reverse_iterator
rbegin() const noexcept;
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