[justthistime_]

Which languages have better IDE support than Scala?

Java, C# ... and both received probably hundred times more man-power than Scala IDEs.

What else?

My experience: All dynamic languages – probably not. C++? Hell no. F#? No. OCaml? No. Haskell? No.

Which language do you think of?

[seanmcdirmid]

F# has pretty good IDE support, and type providers are really nice as code completion extensions. C++ has excellent IDE support in visual studio, note I'm including the debugger here also, as that is part of the experience!

Then there is objective C, Swift, Kotlin, Dart, Typescript, some versions of smalltalk. Many of those languages were designed specifically for IDE use (dart and typescript definitely).