I'm (slowly) in the process of migrating an Android app from Java -> Kotlin. The compatibility with Java is pretty amazing. Mixing the two languages feels almo

I'm (slowly) in the process of migrating an Android app from Java -> Kotlin. The compatibility with Java is pretty amazing. Mixing the two languages feels almost the same as two java files. There is a bit of cognitive overhead at first, but that's the overhead of learning a new language. Plus I immediately see the benefits, specifically WRT optionals (?. and ?: operator).