Mikhail Glukhikh
27 lines
443 B
Kotlin
Vendored
27 lines
443 B
Kotlin
Vendored
// !USE_EXPERIMENTAL: kotlin.contracts.ExperimentalContracts
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// IGNORE_BACKEND: NATIVE
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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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class Foo(foo: Boolean) {
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var res = "FAIL"
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init {
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runOnce {
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foo
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res = "OK"
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}
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}
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}
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fun box(): String {
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val foo = Foo(true)
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return foo.res
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}
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