[vijaykiran]

From my non-substantial experience in Clojure and Scala, I'd say that Clojure is simpler and faster to learn and get productive quickly than Scala. Scala has lot more syntax and concepts that you need to grok compared to simplicity of Clojure.

I'm curious why you say Clojure has a steep learning curve.

[threeseed]

Clojure has a steep learning curve because it's purely functional.

Most programmers grow up with learning OOP and so throwing all of that out and asking you brain to do everything in reverse is challenging. I know having worked with a dozen J2EE developers in their transition to Clojure. It took at least 3 months to just be productive.

Scala for many people is just Java with a sprinkling of functional and they never really bother to learn the internals or the more complex areas like generic programming e.g. Shapeless/Cats.

[jrs95]

IMO it's just the syntax that comes across as really bizarre. Scala is much more complex than Clojure aside from the initial hurdle of getting used to that syntax.

Personally I think it's less about FP vs OOP -- even if the OO parts of Scala are familiar, you're going to encounter FP code in Scala, and in general there is a lot more to learn with Scala as a language just to be able to read other people's code effectively.