In the “Composable functions can run in parallel” ...

# compose

[Vinay Gaba]

In the “Composable functions can run in parallel” section (https://developer.android.com/jetpack/compose/mental-model#parallel), I just noticed something

Because of this, writes like this are not supported in Compose; by prohibiting those writes, we allow the framework to change threads to execute composable lambdas.

I was wondering what “prohibiting those writes” means? Like I understand why we shouldn’t do it but how is the system enforcing it right now? I don’t see anything that’s stopping me from doing that.

[Adam Powell]

It doesn't yet, but we've got making this a compiler error on the todo list

[Adam Powell]

It doesn't even need multi threading to be wrong code either

[Adam Powell]

Consider that the row and column in the example can recompose independently whenever the system likes

[Vinay Gaba]

Thanks for adding more context! Yeah that does make sense. Will be very interesting to see how we can use compiler errors to avoid common mistakes 👍🏼