obj Swapper<T> {
    fun doit(a: T*, b: T*) : void {
        var temp: T = *a;
        *a = *b;
        *b = temp;
    }
}


fun swap<T>(a: T*, b: T*) : void {
    var temp: T = *a
    *a = *b
    *b = temp;
}

fun print2int(a: int, b: int) : void {
    simple_passthrough(a = a, b = b::) """
        printf("yeah new syntax: %d, %d\n", a, b);
    """
}


fun main() : int {
    var i: int = 7;
    var j: int = 6;
    print2int(i,j)
    swap<int>(&i, &j)
    print2int(i,j)
    var it: Swapper<int>
    it.doit(&i,&j);
    print2int(i,j)
    return 0
}