Many Google teams have also been on a similar journey from Java to Kotlin for both Android and the server-side, culminating in over 11m lines of Kotlin code (as of October 2022).

As it stands today, Android apps are generally coded in Kotlin, but Apple is looking to provide its Swift coding language as an alternative.

He goes on to note that in Android 13 there are 1.5 million total lines of Rust code, representing about 21% of all new code. To date, Google has seen not a single memory safety vulnerability in ...