std::future<T>::valid
Checks if the future refers to a shared state. This is the case only for futures that were not default-constructed or moved from (i.e. returned by std::promise::get_future (),
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std::future<T>::~future
These actions will not block for the shared state to become ready, except that they may block if all following conditions are satisfied: The shared state was created by a call to std::async.
pandas FutureWarning: Downcasting object dtype arrays on llna
FutureWarning: Downcasting object dtype arrays on llna, .ffill, .bfill is deprecated and will change in a future version. Call result fer_objects (copy=False) instead.
Ansible yum throwing future feature annotations is not defined
The error: SyntaxError: future feature annotations is not defined usually related to an old version of python, but my remote server has Python3.9 and to verify it - I also added it in my
std::shared_future
Unlike std::future, which is only moveable (so only one instance can refer to any particular asynchronous result), std::shared_future is copyable and multiple shared future objects
std::future<T>::wait_until
wait_until waits for a result to become available. It blocks until specified timeout_time has been reached or the result becomes available, whichever comes first. The return value indicates why
std::future<T>::get
The get member function waits (by calling wait ()) until the shared state is ready, then retrieves the value stored in the shared state (if any). Right after calling this function, valid () is false.
std::future
The class template std::future provides a mechanism to access the result of asynchronous operations: An asynchronous operation (created via std::async, std::packaged_task,
std::future<T>::wait
Blocks until the result becomes available. valid() == true after the call. The behavior is undefined if valid() == false before the call to this function.