- std::future - cppreference. com
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, or std::promise) can provide a std::future object to the creator of that asynchronous operation The creator of the asynchronous operation can then use a variety of methods to query, wait for, or extract a value from the std
- std::future lt;T gt;::future - cppreference. com
2) Move constructor Constructs a std::future with the shared state of other using move semantics After construction, other valid() == false
- std::shared_future - cppreference. com
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 may refer to the same shared state Access to the same shared state from multiple threads is safe if each thread does it through its own copy of a shared_future object
- pandas FutureWarning: Downcasting object dtype arrays on . fillna . . .
FutureWarning: Downcasting object dtype arrays on fillna, ffill, bfill is deprecated and will change in a future version Call result infer_objects (copy=False) instead
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