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Showing posts with the label map destructuring

Destructuring in Kotlin

Introduction This is a process in which we can be able to extract properties of interest from an object  / collection. We have been used to using destructuring in javascript and other functional languages whereas in Java / C# we have not been able to do this. However, kotlin has added the functionality to destructure classes by properties, collections, maps etc. Destructuring classes To enable a class to be destructured, should we do anything in kotlin? The answer is yes and no.. looks puzzling ain't it. Destructuring a class Below is a regular class (non data class) which needs implementation to allow it to be destructured class User ( var mail : String , var deptId : Long ) { operator fun component1 () = mail operator fun component2 () = deptId } Destructuring a data class Below is a declaration of a data class which comes with the support for destructuring for free as like toString, hashcode etc.. data class CompanyUser ( var mail : String , var deptId : Long ) Now that