I see. I work in JavaScript so I don't really use a REPL. Often I do "evaluate expressions" in my IDE, I guess that is somewhat similar. I wonder if a "real R

I see. I work in JavaScript so I don't really use a REPL. Often I do "evaluate expressions" in my IDE, I guess that is somewhat similar. I wonder if a "real REPL" would be useful for JavaScript. Or is it something that especially helps when working with languages like Haskell?