| // 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 |
| * relying on default values for some of its properties. Therefore the compiler will generate an |
| * invoke to copy$default method which is a wrapper around copy and deals with default values. |
| * |
| * See https://kotlinlang.org/docs/reference/data-classes.html#copying. |
| */ |
| fun main(args: Array<String>) { |
| testDataClassCopyWithDefault() |
| } |
| |
| fun testDataClassCopyWithDefault() { |
| val albert = Person("Albert", 28) |
| // We don't pass a 'name', thus we copy the property value of the receiver. This will result |
| // in calling the copy$default method instead of the copy method. |
| val olderAlbert = albert.copy(age = albert.age + 10) |
| println("Name: ${olderAlbert.name}") |
| println("Age: ${olderAlbert.age}") |
| } |
