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
This version of Boost is under active development. You are currently in the master branch. The current version is 1.92.0.
Returns whether the collection contains any resultset.
bool empty() const noexcept;
This function is provided for compatibility with standard collections,
and always returns false, since any valid results
contains at least one resultset.
this->has_value()
== true
No-throw guarantee.
Constant.