Svetlana Isakova
8 lines
154 B
Kotlin
8 lines
154 B
Kotlin
trait Expr
|
|
class Sum(val left : Expr, val right : Expr) : Expr
|
|
|
|
fun evalWhen(e : Expr) : Int = when (e) {
|
|
is Sum -> e.<caret>
|
|
}
|
|
|
|
// EXIST: left, right |