std::shared_future::valid
From cppreference.com
< cpp | thread | shared future
| bool valid() const;
|
(since C++11) | |
Checks if the future refers to a shared state. This is the case only for futures returned by std::promise::get_future(), std::packaged_task::get_future() or std::async() until the first time get() is called.
Contents |
[edit] Parameters
(none)
[edit] Return value
true if *this refers to a shared state, otherwise false.
[edit] Exceptions
noexcept specification:
noexcept
[edit] Example
| This section is incomplete Reason: no example |
[edit] See also
| waits for the result to become available (public member function) |