Lambda com kotlin ~

Lambda.kt

class Lambda {
  fun t1(p: Int, lambda: (l: String) -> String) {
        lambda(p.toString())
    }

    fun t2(p: Int): Long {
        return 1L
    }
    fun t3(p3: Int) {
        t1(1) { t2(it.toInt()).toString() }
    }
}