Coroutines: auto-cancel pattern

• date: Jan 2026
• link: AsyncImagePainter.kt from Coil 3.3.0 under Apache-2.0 License

When needs to cancel coroutine:

Kotlin

private var coroutineJob: Job? = null
    set(value) {
        field?.cancel()
        field = value
    }

fun nullAndCancelJob() {
    coroutineJob = null
}