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lmm | karma 42440 | avg karma 1.91 · 2017-05-22 08:38:43+00:00

We'll see how Kotlin looks when it's as old as Scala is. They haven't yet had to make substantial changes while keeping compatibility with existing codebases; that's hard for any language and much harder for a language that throws in a lot of ad-hoc special-case features at the language level (which Kotlin does a lot more than Scala, despite how it might superficially seem).

izacus | karma 26220 | avg karma 4.38 · 2017-05-22 10:07:07

Kotlin is heavily used internally at JetBrains for development of their IDEs. For years now - those aren't small or easy projects.

lmm | karma 42440 | avg karma 1.91 · 2017-05-23 10:20:35

Just as with a library, evolving a language that's used internally is very different from evolving one that's used publicly by third parties.