[tluyben2]

I mentioned to my Haskell teacher in uni that I did 2 years of intensive Prolog for an AI course at another uni and so that I grasp the basics or ‘everything recursion’ (mind you, this is 25 years or so ago). He got angry and said the two have nothing in common and if I believe that I definitely should pay more attention. It was weird as I did not say they are alike; just that they share some concepts which are usually hard to understand for imperative programmers, but, after 2 years of breathing Prolog really are second nature.

[garmaine]

Sibling comment is spot on. Your "teacher" was either not well informed or dealing with some issues himself.

To cathartically let go of that experience, I suggest reading up on Curry, the logical language extension to Haskell: https://en.wikipedia.org/wiki/Curry_(programming_language)

[ainar-g]

Honestly, that speaks more about the teacher's personal issues than it does about the similarities between logic and purely functional programming. I'm sorry that you had to experience that.

[bjz_]

Waaaaaat. There's so much in Haskell's type system that is also in logic programming. Like Hindley-Milner type inference and type class instance resolution.