...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Table of Contents
State machines are the description of a thing's lifeline. They describe the different stages of the lifeline, the events influencing it, and what it does when a particular event is detected at a particular stage. They offer the complete specification of the dynamic behavior of the thing.