Andrey Breslav
16 lines
325 B
Kotlin
16 lines
325 B
Kotlin
trait Either<out A, out B>
|
|
trait Left<out A>: Either<A, Nothing>
|
|
trait Right<out B>: Either<Nothing, B>
|
|
|
|
class C1(val v1: Int)
|
|
class C2(val v2: Int)
|
|
|
|
fun _as_left(e: Either<C1, C2>): Any {
|
|
val v = e as Left
|
|
return v: Left<C1>
|
|
}
|
|
|
|
fun _as_right(e: Either<C1, C2>): Any {
|
|
val v = e as Right
|
|
return v: Right<C2>
|
|
} |