clarifications on when_all() effects #28
Description
The Effects clause states
Each future and shared_future is waited upon and then copied into the collection of the output (returned) future, maintaining the order of the futures in the input collection.
I don't think that the futures are waited in this function. IMO the future are moved and the shared_future is copied to the shared state of the new future.
It is only internal function used for the new created thread that will wait on all the futures/shared_futures.
Resuming this is not a blocking function.