From the existing explanations, I’ve deduced that coroutines are a form of continuation based coopetative multitasking. Is it possible to “restart” the sequence, and how would this be done?
There are two ways you can restart with the standard interface:
- create a new task (start over) and maybe delete the old task
- implement the task as a generator that can repeatedly yield values
I think this is as good as you can hope for without lots of other interfaces (and since you can implement all the promise types yourself, you can do that too).
As far as I understand, they are one-shot continuations, so no, they are not restartable unfortunately. I believe at some point one proposal had copyable (and hence multi-shot) continuations, but the proposal had other issues.
- create a new task (start over) and maybe delete the old task
- implement the task as a generator that can repeatedly yield values
I think this is as good as you can hope for without lots of other interfaces (and since you can implement all the promise types yourself, you can do that too).