科特林使用的时候

代码示例

14
0

科特林时

val x = 3
when(x) {
    3 -> println("yes")
    8 -> println("no")
    else -> println("maybe")
}
// when can also be used as an expression!
val y = when(x) {
    3 -> "yes"
    8 -> "no"
    else -> "maybe"
}
println(y) // "yes"
0
0

当科特林

var greeting : String ? = null
fun main(){
	when(greeting){
		null -> println("Hi")
        else -> println(greeting)
        }
   }

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