|  | // Copyright (c) 2018, the R8 project authors. Please see the AUTHORS file | 
|  | // for details. All rights reserved. Use of this source code is governed by a | 
|  | // BSD-style license that can be found in the LICENSE file. | 
|  |  | 
|  | package dataclass | 
|  |  | 
|  | /** | 
|  | * This is an example of copying an instance of a data class Person using its copy method and | 
|  | * passing a value for each property. | 
|  | * | 
|  | * See https://kotlinlang.org/docs/reference/data-classes.html#copying. | 
|  | */ | 
|  | fun main(args: Array<String>) { | 
|  | testDataClassCopy() | 
|  | } | 
|  |  | 
|  | fun testDataClassCopy() { | 
|  | val albert = Person("Albert", 28) | 
|  | val youngerJonas = albert.copy("Jonas", albert.age - 10) | 
|  | val olderJonas = youngerJonas.copy("Jonas", albert.age + 20) | 
|  | println("Name: ${olderJonas.name}") | 
|  | println("Age: ${olderJonas.age}") | 
|  | } |