runCatching异常捕获onSuccess/onFailure返回函数，Kotlin

runCatching异常捕获onSuccess/onFailure返回函数，Kotlin

fun test(a: Int, b: Int) {runCatching {a / b}.onSuccess {println("onSuccess: $it")return ok(it)}.onFailure {println("onFailure: $it")return fail(it)}
}fun ok(o: Any) {println("ok: $o")
}fun fail(o: Any) {println("fail: $o")
}fun main(args: Array<String>) {test(0, 1)test(1, 0)
}

onSuccess: 0
ok: 0
onFailure: java.lang.ArithmeticException: / by zero
fail: java.lang.ArithmeticException: / by zero

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