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
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
BOOST_TRIBOOL_THIRD_STATE — Declare a new name for the third state of a tribool.
// In header: <boost/logic/tribool.hpp>
BOOST_TRIBOOL_THIRD_STATE(Name)Use this macro to declare a new name for the third state of a tribool. This state can have any number of new names (in addition to indeterminate), all of which will be equivalent. The new name will be placed in the namespace in which the macro is expanded.
Example: BOOST_TRIBOOL_THIRD_STATE(true_or_false)
tribool x(true_or_false); // potentially set x if (true_or_false(x)) { // don't know what x is }