Konstantin Anisimov
23 lines
474 B
Kotlin
23 lines
474 B
Kotlin
open class A
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class B : A()
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class C
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fun foo(a: Any) : A? = a as? A
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fun safe_cast_positive(): Boolean {
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val b = B()
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return foo(b) === b
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}
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fun safe_cast_negative(): Boolean {
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val c = C()
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return foo(c) == null
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}
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fun main(args: Array<String>) {
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val safeCastPositive = safe_cast_positive().toString()
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val safeCastNegative = safe_cast_negative().toString()
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println("safe_cast_positive: " + safeCastPositive)
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println("safe_cast_negative: " + safeCastNegative)
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} |