Until you come to Prolog, or APL/J/K and realise that none of these languages have fully prepared you either. And then there are other things out there too, that will leave you learning all over again.
APL and friends blew my mind when I read about them. I remember thinking "You can do all that with just those characters? That's the same length as the word function"! It's a good job I read this far down, I made a mental note to learn J but, as usual, forgot it by the time I got home. Thanks!
I always do one-liner stuff in J, and I keep trying to get into F#. I recently bought Dyalog's APL. I thought the symbols would get in the way, but it's a whole other door opening. I really like the array-oriented languages for math and science. Even Julia and Numpy are attempts to do what the APL/J/K family have always done.
I've always had Racket on my machine, before it was called Racket. Having an IDE and a good standard library right off the bat is great for beginners and dabblers like myself. I do not program for a living. I only program when I have a math or engineering problem to solve.
