std::experimental::observer_ptr<W>::operator bool

Technical specifications
Filesystem library (filesystem TS)
Library fundamentals (library fundamentals TS)
Library fundamentals 2 (library fundamentals 2 TS)
Extensions for parallelism (parallelism TS)
Extensions for parallelism 2 (parallelism TS v2)
Extensions for concurrency (concurrency TS)
Concepts (concepts TS)
Ranges (ranges TS)
Special mathematical functions (special math TR)
constexpr explicit operator bool() const noexcept;
(library fundamentals TS v2)

Checks whether *this has an associated watched object, i.e. whether get() != nullptr.



Return value

true if *this has an associated watched object, false otherwise.


See also

returns a pointer to the watched object
(public member function)