/*
* When you pass an object in Kotlin, you can change the internals of the 
* object.  But you still cannot change the thing pointed to
*
* @author gtowell
* created: August, 2021 
 */

data class DCls(var a:Int, var b:Int)

fun main() {
    var aa : DCls = DCls(1,2)
    println("MAINa: ${aa} ${System.identityHashCode(aa)}")
    pass(aa)
    println("MAINb: ${aa} ${System.identityHashCode(aa)}")
    aa = DCls(4,16)
    println("MAINc: ${aa} ${System.identityHashCode(aa)}")
}

fun pass(pss: DCls) {
    println("PASSa: ${pss} ${System.identityHashCode(pss)}")
    pss.a=5
    println("PASSb: ${pss} ${System.identityHashCode(pss)}")
}