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
Constructs a field holding
NULL.
explicit field( std::nullptr_t) noexcept;
Caution: field(NULL)
will NOT match this overload. It will
try to construct a string_view
from a NULL C string, causing undefined behavior.
No-throw guarantee.