Is there a mechanism similar to `Semaphore` that h...

# coroutines

[bbaldino]

Is there a mechanism similar to Semaphore that has no available 'permits' to start? I need to launch a coroutine to keep a scope alive, but have it suspend until something else tells it to "go"

[Casey Brooks]

CompletableDeferred is probably the easiest thing to use as a simple “signal”

[bbaldino]

This is perfect, thanks!

[ephemient]

you can also launch(start = CoroutineStart.LAZY) - the resulting job will not start until you call .start() or .join() on it

[bbaldino]

Oh interesting, will a coroutine in unstarted state keep a parent scope alive?

[ephemient]

yes

[bbaldino]

Great, thanks!