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
Returns true if this is a null.
bool is_null() const;
This function is used to determine if the underlying representation is a certain kind.
return this->kind() == kind::null;
Constant.
No-throw guarantee.