Mastering Kotlin

Destructuring

Data classes will generate component functions for all primary constructor properties. For each primary constructor property, a componentX function will be created where X is the order of the property. We can illustrate how this works using the following Article class:

data class Article(var title: String, val author: String) {    var snippet: String = ""}

For our Article example, the compiler will generate component1() and component2() methods:

public final class Article {   ...   @NotNull   public final String component1() {      return this.title;   }   @NotNull   public final String component2() {      return this.author;   }}

These component functions can then be used by the compiler to support destructuring declarations, shown as follows:

fun