A modern programming language that makes developers happier.

kotlinlang

Does `data class` have problem with huge data? I mean, I'm using a `data class` in a `RecyclerView` and this class has some fields (all of them are primitive types) and when applying some animations when the user click in one of the items in the list these animations does not works properly. 

But if I use a `class` instead of a `data class`, everything works fine and all animations are applied.

If your animation triggers  an item comparison on the list items you could see problems if the `equals` and `hashcode` methods generated by the `data class` were very expensive.

This is what happens when I use DC: <https://imgur.com/a/CkorJ>

Normal anim (what should happen): <https://imgur.com/a/G60r2>

Also, I haven't thought about it, <@U71GEKUMT>. That could be a good start to solve it, thank you.

Looking at those animations, maybe the animation relies on each item being logically different and with `data class` the comparison now it’s checking field equality… so where `class1 != class2`, now maybe `dataClass` == dataClass2`. Might be helpful to wrap your `data class` in a ViewModel/ViewState like class for display in that list.