Kotlin

Usually when I read a KMP article it talks about mobile. This one is about JS and the JVM.

In this episode, we talk to Rick Clephas, one of the Kotlin Foundation Grants Program winners and the creator of KMP-NativeCoroutines and KMM-ViewModel.

When I last used KMP it was before the new memory model so I avoided coroutines as much as possible. A year later and it looks to be so much easier and better now.

Hey, I am trying to do some data storing on compose multiplatform for ios and Android and tried using Jetpack Datastores but it seems that the class Context does not exist for shared platforms does anyone have any ideas on how to do this?

I bumped into this interesting behavior around unsigned types. At first I was confused why UInt doesn't extend Number, but as I was experimenting, it got weirder. It sometimes is a Number (see case c below) and sometimes isn't (see case d)?!

val a: Int = 12
a is Number // true

val b: UInt = 12u
b is Number // doesn't compile, `Incompatible types: Number and UInt`

val c: UInt = 12u
(c as Any) is Number // true, Idea says "No cast needed"

val d: Any = 12u
d is Number // false

I guess this is partly legacy of Java, which doesn't have unsigned types, and partly effect of UInt being value class. I'm curious if someone has a deeper explanation.

Has anyone used WASM with Kotlin yet? I still haven't had a chance to check out Multiplatform at all (haven't really had a need).