std::packaged_task<R(Args...)>::valid
Min standard notice:
Checks whether *this has a shared state.
# Declarations
bool valid() const noexcept;
(since C++11)
# Return value
true if *this has a shared state, false otherwise.
Checks whether *this has a shared state.
bool valid() const noexcept;
(since C++11)
true if *this has a shared state, false otherwise.