...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Return a reference to the underlying string
,
without checking.
string
&
get_string() & noexcept;
This is the fastest way to access the underlying representation when the kind is known in advance.
this->is_string()
Constant.
No-throw guarantee.