staticlib::support::logic::tribool Class Reference

A 3-state boolean type. More...

#include <staticlib/support/tribool.hpp>

Classes
struct	dummy
	INTERNAL ONLY.

Public Types
enum	value_t { false_value, true_value, indeterminate_value }
	The actual stored value in this 3-state boolean, which may be false, true, or indeterminate. More...

Public Member Functions
	tribool ()
	Construct a new 3-state boolean value with the value 'false'.
	tribool (bool initial_value)
	Construct a new 3-state boolean value with the given boolean value, which may be true or false.
	tribool (indeterminate_keyword_t)
	Construct a new 3-state boolean value with an indeterminate value.
	operator safe_bool () const
	Use a 3-state boolean in a boolean context.

Public Attributes
enum staticlib::support::logic::tribool::value_t	value

Detailed Description

A 3-state boolean type.

3-state boolean values are either true, false, or indeterminate.

Member Enumeration Documentation

enum staticlib::support::logic::tribool::value_t

The actual stored value in this 3-state boolean, which may be false, true, or indeterminate.

Enumerator:

false_value
true_value
indeterminate_value

Constructor & Destructor Documentation

staticlib::support::logic::tribool::tribool ( )

inline

Construct a new 3-state boolean value with the value 'false'.

Exceptions

nothrow

staticlib::support::logic::tribool::tribool ( bool  initial_value )

inline

Construct a new 3-state boolean value with the given boolean value, which may be true or false.

Exceptions

nothrow

staticlib::support::logic::tribool::tribool ( indeterminate_keyword_t  )

inline

Construct a new 3-state boolean value with an indeterminate value.

Exceptions

nothrow

Member Function Documentation

staticlib::support::logic::tribool::operator safe_bool ( ) const

inline

Use a 3-state boolean in a boolean context.

Will evaluate true in a boolean context only when the 3-state boolean is definitely true.

Returns

true if the 3-state boolean is true, false otherwise

Exceptions

nothrow

Member Data Documentation

enum staticlib::support::logic::tribool::value_t staticlib::support::logic::tribool::value

---

The documentation for this class was generated from the following file:

• staticlib/support/tribool.hpp