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 version of Boost is under active development. You are currently in the develop branch. The current version is 1.89.0.

Wait handler requirements

Wait handler requirements

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