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 2022. The current version is 1.89.0.
A handshake handler must meet the requirements for a handler.
A value h of a handshake
handler class should work correctly in the expression h(ec),
where ec is an lvalue of
type const error_code.