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• 1.0.0-rc3
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• overloaded.kt

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run.smt.ktest.util.lambda.overloaded.kt Maven / Gradle / Ivy

package run.smt.ktest.util.lambda

class SingleArgumentLambda internal constructor(private val original: (T?) -> R) {
    operator fun invoke(param: T) = original(param)
    operator fun invoke() = original(null)
}

class DualArgumentLambda internal constructor(private val original: (A?, B?) -> R) {
    operator fun invoke() = original(null, null)
    operator fun invoke(a: A) = original(a, null)
    operator fun invoke(a: A?, b: B) = original(a, b)
}

fun  ((T?) -> R).overloaded() = SingleArgumentLambda(this)
fun  ((A?, B?) -> R).overloaded() = DualArgumentLambda(this)