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

This is an older version of Boost and was released in 2024. The current version is 1.89.0.

buffer_ref::capacity

buffer_ref::capacity

Return the maximum number of bytes, both readable and writable, that can be held without requiring an allocation.

Synopsis

std::size_t
capacity() const;