Dmitry Jemerov
18 lines
375 B
Kotlin
18 lines
375 B
Kotlin
// !CHECK_TYPE
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trait Either<out A, out B>
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trait Left<out A>: Either<A, Nothing>
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trait Right<out B>: Either<Nothing, B>
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class C1(val v1: Int)
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class C2(val v2: Int)
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fun _as_left(e: Either<C1, C2>): Any? {
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val v = e as? Left
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return checkSubtype<Left<C1>?>(v)
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}
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fun _as_right(e: Either<C1, C2>): Any? {
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val v = e as? Right
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return checkSubtype<Right<C2>?>(v)
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} |