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
You've currently chosen the 1.91.0 version. If a newer release comes out, you will continue to view the 1.91.0 version, not the new latest release.
Get the maximum size that the buffer may grow to without triggering reallocation.
std::size_t capacity() const;
The current capacity of the underlying string if less than max_size().
Otherwise returns max_size().