Kotlin_implicit_return.kt

fun alwaysReturnsNull(position: Int): String? {
    if ((position % 10) == 0) {
        when (position) {
            10 -> "one"
            20, 30 -> "two"
            else -> "three"
        }
    }
    return null
}

fun returnsNullableString(position: Int): String? {
    if ((position % 10) == 0) {
        return when (position) {
            10 -> "one"
            20, 30 -> "two"
            else -> "three"
        }
    }
    return null
}