is there any point to doing something like `lauch { val result = async { doStuff() }.await() }`, ass...

# coroutines

[projectmoon]

is there any point to doing something like lauch { val result = async { doStuff() }.await() }, assuming doStuff() is a suspend fun? or would it make more sense to simply call doStuff() inside the launch block without async?

[Zach Klippenstein (he/him) [MOD]]

just call doStuff() inside launch, that async isn’t doing anything.

[projectmoon]

i figured as much. where is async best applied, then?

[projectmoon]

i guess when you have multiple suspend functions that you want to wait for simultaneously, and/or they are long-running?

[Jason Ostrander]

async is used when you want to run code in parallel

[Jason Ostrander]

So, if you wanted to issue two network requests at the same time, then wait for both to complete, you could start them both in their own async blocks, then await on both of the returned Deferreds

[projectmoon]

sounds right

[projectmoon]

most of my async knowledge comes from nodejs callbacks, so i still think that way heavily

[Dico]

async shouldnt be user very often at all, as a generale type of thumb.

[Dico]

withContext should commonly be used instead, when you invoke await immediately anyway