Mads Ager
28 lines
443 B
Kotlin
Vendored
28 lines
443 B
Kotlin
Vendored
// !OPT_IN: kotlin.contracts.ExperimentalContracts
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// WITH_STDLIB
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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 foo(): String {
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var res = "FAIL"
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try {
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error("OK")
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} catch(e: Exception) {
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runOnce {
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res = e.message!!
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}
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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 foo()
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}
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