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 1.90.0.
Return the number of elements that can be held in currently allocated memory.
std::size_t
capacity() const noexcept;
This number may be larger than the value returned by size().
Constant.
No-throw guarantee.