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 2023. The current version is 1.91.0.

dynamic_string_buffer::capacity

dynamic_string_buffer::capacity

Get the maximum size that the buffer may grow to without triggering reallocation.

std::size_t capacity() const;

Return Value

The current capacity of the underlying string if less than max_size(). Otherwise returns max_size().