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I think we've arrived at that future. With languages like Crystal, Rust, Groovy, and Elixir, you can get some of the same powers that Ruby bestows upon you in other environments like a statically compiled binary, the JVM, or the Erlang runtime (with it's lovely OTP framework). I even see JavaScript taking on some Ruby-like characteristics these days.

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Those languages each target one of those platforms only, i.e. Crystal and Rust for a statically compiled binary, Apache Groovy for the JVM, and Elixir for the Erlang runtime.

Why not use a language that targets many platforms? E.g. Kotlin targets the JVM, Android, and Javascript, as well as is natively compiled. Now that's the real future. Better than using, say Groovy, to target the JVM, then rewriting it all when you want it to run on Android.

Agreed. I feel that ES6 is very ruby-like with the functional programming parts. I'm also very happy about Groovy, Elixir, and other languages that are Ruby-inspired.

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