我看了第一節，就看到它提到的兩個 edge case，下面兩個 compile 不會過:
//// case 1
val name: String? = "Marton"
val surname: String = "Braun"
val fullName: String?
get() = name?.let { "$it $surname" }
fun main() {
if (fullName != null) {
println(fullName.length)
}
}
//// case 2
var list = mutableListOf<Int>()
fun main() {
list += 1
}
還不錯的書，繼續讀…
看看 dagger:
@Binds
@IntoMap
@ViewModelKey(StartPageViewModel::class)
abstract fun bindStartPageViewModel(
startPageViewModel: StartPageViewModel): ViewModel
這種 annotation 海我覺得還是算了...