Mikhail Glukhikh
27 lines
442 B
Kotlin
Vendored
27 lines
442 B
Kotlin
Vendored
// !OPT_IN: kotlin.contracts.ExperimentalContracts
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// IGNORE_BACKEND: NATIVE, JS
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// WITH_RUNTIME
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// KJS_WITH_FULL_RUNTIME
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import kotlin.contracts.*
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fun runOnce(action: () -> Unit) {
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contract {
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callsInPlace(action, InvocationKind.EXACTLY_ONCE)
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}
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action()
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}
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fun ok(): String {
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val res: String
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val (o, _) = "OK" to "FAIL"
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runOnce {
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res = o
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}
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return res
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}
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fun box(): String {
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return ok()
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}
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