I ve seen this pattern cropping up in some compose repos fro kotlinlang #compose

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Title

c

Colton Idle

01/23/2022, 7:37 PM

I've seen this pattern cropping up in some compose repos from others... thoughts? At first glance I guess it's kinda clever for trying to get something to launch only once, but it just seems bad

LaunchedEffect(key1 = "launch_once") {
    myViewModel.doSomething()
  }

s

ste

01/23/2022, 7:40 PM

At first glance I guess it's kinda clever for trying to get something to launch only once

It's basically

LaunchedEffect(Unit)

, isn't it?

☝️🏼 1

☝️ 2

☝️🏽 1

➕ 3

a

Adam Powell

01/24/2022, 2:35 AM

Any constant will do but

Unit

is more or less what we standardized on.

true

had some support on the team for a while

LaunchedEffect(Unit)

is meant to look suspicious in the same way

while (true)

looks suspicious. The lack of a "real" key there is supposed to invite closer reading

➕ 2

we've had some discussion around whether this has been effective or if it's just kinda noisy. The discussion it invites I think is sort of anecdata suggesting some positive results

and in the case of the example that started the thread, the key should probably be

myViewModel

🙂

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