A modern programming language that makes developers happier.

kotlinlang

Unless the original data class is indeed _just_ a tupple (e.g. it does not add any extra behavior beyond provided by data class) it is going to be non-trivial (e.g. it will require either annotation process / code-generation or reflection). However, you are free to define your own interface like `interface Tupple2&lt;A,B&gt; { fun component1(): A; fun component2(): B }`, implement it in your data classes and experiment. Maybe that is going to be enough for your needs.