Joshua Niehus:
I'll take your word for it, in my narrow experience, I've found REPLs slow me down.
Thankfully in most cases you are not forced to use it. I have met several persons that don't like to use a REPL, for unknown reasons. Different persons have a brain shaped in different ways.
And for some kind of problems it's not so good. So it's not for everyone everytime.
But from the presence of a REPL in many languages (Python, Ruby, C, Haskell, Scala, Lisp-like languages, and so on) and in most mathematics systems, clearly it's appreciated by some others.
Bye, bearophile
