The Kotlin, Swift, and Ruby languages have slipped from their top 20 positions in the Tiobe index of programming language popularity. All three seem to have lost traction and to be in decline ...

While it's not available yet, Swift has announced plans to bring the Apple-founded coding language to Android. ... and Kotlin was adopted in 2017 and has been the focus ever since.

Kotlin and Swift decline when they’re no longer the best picks for mobile. Kotlin, Ruby, and Swift are all “likely to go out of fashion” after reliably holding on to spots in the top 20, ...