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AsynchronousTaskObject

AsynchronousTaskObject["name", id, sessionid]
is an object that represents asynchronous evaluations from a particular asynchronous task.

Details Details

URLFetchAsynchronous returns an AsynchronousTaskObject.
id is a serial number used to distinguish asynchronous tasks.
sessionid is the $SessionID of the Mathematica session where the AsynchronousTaskObject was created.
An AsynchronousTaskObject can be passed to StopAsynchronousTask, StartAsynchronousTask, and WaitAsynchronousTask.

Start two long downloads:

Out[1]=

Remove one of the download tasks using its AsynchronousTaskObject expression:

The removed task will no longer be listed:

Out[3]=

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