import io:*
import vector:*

obj container {
    var v1: vector<int>
    var v2: vector<int>
    fun construct(): *container {
        v1.construct()
        v2.construct()
    }
    fun destruct() {
        v1.destruct()
        v2.destruct()
    }
}

fun main():int {
    var c.construct() : container
    c.v1 = vector(1); // need this ; otherwise this could ambigiously be one or two lines
    (c.v1).for_each(fun(i: int) {
        println(i)
    })
}