Kotlin, the Google-endorsed programming language for building Android apps, now has the fastest-growing population of contributors on Microsoft-owned code-hosting repository GitHub. Google made ...

Kotlin's primary sponsor is JetBrains, the company behind tools like IntelliJ. It's 100 percent interoperable with Java, which until now was Google's only primary language for writing Android apps.

Worse than that, all the Kotlin tools need to account for Kotlin and Java interoperability, which complicates their implementation," notes Strulovich. But Meta's biggest concern is slower build ...