Multiple distinct objects: Difference between revisions

=={{header|Kotlin}}==

<lang scala>// version 1.1.1

class Foo {

val id: Int

init {

id = ++numCreated // creates a distict id for each object

}

companion object {

private var numCreated = 0

}

}

fun main(args: Array<String>) {

val n = 3 // say

/* correct approach - creates references to distinct objects */

val fooList = List(n) { Foo() }

for (foo in fooList) println(foo.id)

/* incorrect approach - creates references to same object */

val f = Foo()

val fooList2 = List(n) { f }

for (foo in fooList2) println(foo.id)

}</lang>

{{out}}

<pre>

1

2

3

4

4

4

</pre>