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 the documentation for a snapshot of the master branch, built from commit 064f557086.

Return a reference to the underlying bool, or throw an exception.

bool&
as_bool();

If is_bool() is true, returns a reference to the underlying bool, otherwise throws an exception.

Constant.

Strong guarantee.

Type	Thrown On
boost::system::system_error	`! this->is_bool()`.