21 lines
386 B
Kotlin
21 lines
386 B
Kotlin
fun <erased T : Any> T?.iterator() = object {
|
|
var hasNext = this@iterator != null
|
|
private set
|
|
|
|
fun next() : T {
|
|
if (hasNext) {
|
|
hasNext = false
|
|
return this@iterator.sure()
|
|
}
|
|
throw java.util.NoSuchElementException()
|
|
}
|
|
}
|
|
|
|
fun box() : String {
|
|
var k = 0
|
|
for (i in 1) {
|
|
k++
|
|
}
|
|
return if(k == 1) "OK" else "fail"
|
|
}
|