Just a quick coroutine question. All I want to do ...

# getting-started

[Paul N]

Just a quick coroutine question. All I want to do is fire off a large number of calculations in the background, and wait for them to finish before continuing. I'm not interested in any results from them.

How do I wait for all of them to finish ?

[Dominaezzz]

If you spawn all the coroutines in a coroutineScope { .. }, then the scope will wait for all the coroutines to finish before proceeding.

[Dominaezzz]

Or you can use List<Job>.joinAll() I think.

[Paul N]

That did the trick, thanks !

[Paul N]

(wrapped in a coroutineScope)

[Paul N]

Also I realised I got no performance gain at all until I did launch(Dispatchers.Default) as I seemed to be running in a single thread regardless