import io:*

/*fun byRef<T>(it: ref T) {*/
    /*it = it + 1*/
/*}*/

/*fun byRef(it: * int) {*/
    /**it = *it + 1*/
/*}*/

fun byRef(it: ref int) {
    it = it + 1
}

// what about cosures closing over references?

fun main():int {
    var a = 6
    byRef(a)
    println(a)
    return 0
}