Zaid's fromAsync Cmd

[AlbertoDePena]

Zaid's fromAsync Cmd

[et1975]

This doesn't offer anything new and could be easier implemented via OfAsync.perform, which I'd actually suggest using instead because it allows for separation between async/IO interface and application messaging as well as correct point of composition for the two.

There's also an open item to re-work how subscriptions work, so that's another reason to use these kinds of functions instead of building on Sub directly.

[et1975]

The difference is in how the computation is started, recall that async in F#, unlike promise or task is "cold", ie. it's a computation in potentia, ie. not running until you explicitly start it. StartImmediate uses current thread to start running a computation, while Start schedules it to run on the background thread. You decide if you want it "at some point later", or you want it to preempt anything else (at least until it hits IO API that will schedule continuation on the background thread regardless).

[AlbertoDePena]

@et1975

When would I use Cmd.OfAsync.perform or Cmd.OfAsyncImmediate.perform?