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kotlinlang

When a class is marked as a data class, would the generated functions result in the APK size to increase? or would proguard remove it?

proguard will remove `componentN` and `copy` if they're not used. it won't remove `equals`, `hashCode`, `toString`.

Would there be a noticeable increase in APK size with many data classes

if you were going to hand-write those methods anyway then there's no difference. if you are somehow in a situation where you don't need those methods (which is hard to statically prove, so proguard doesn't) then you can either not use data classes or use a plugin like <https://twitter.com/lightdelay/status/1490722524014985217> to delete them

that plugin doesn't seem to be public. you could message the author, or manually override `equals`, `hashCode`, `toString` to just call `super`, or use ASM manipulation instead of a Kotlin plugin, e.g. <https://www.reddit.com/comments/x8z9r1/-/innw882/> could easily be modified for that purpose

Now it’s public <https://github.com/facebookincubator/dataclassgenerate|https://github.com/facebookincubator/dataclassgenerate>