Thanks ExtendedTasks implementation, it has a promissing future!

As of shiny 1.8.1.1, the methods available for ExtendedTasks are:

     • ‘ExtendedTask$new()’

     • ‘ExtendedTask$invoke()’

     • ‘ExtendedTask$status()’

     • ‘ExtendedTask$result()’

It would be quite useful to have a ExtendedTask$Kill() method that would kill the respective process associated with the task. Such method would better handle cases of expensive tasks where user decides to change inputs half-way. Such actions would create multiple processes running expensive tasks, which is something we want to avoid.

Concept:

ExtendedTask$kill() # kill all previous task
ExtendedTask$invoke() #start a new task based on new input