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

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object::begin

Return an iterator to the first element.

object::iterator
begin() noexcept;
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Return a const iterator to the first element.

object::const_iterator
begin() const noexcept;
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