When a class is marked as a data class, would the generated functions result in the APK size to incr...

# android

[zt]

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?

[ephemient]

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

[zt]

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

[ephemient]

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

[ephemient]

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

[Sergei Rybalkin]

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