I didn't specialise in comp sci (my degree is in networking/security with a minor in software development) so the most we touched on is statistics and linear algebra.
The "mathematician mindset" needed to program in Haskell is alien to me. I like the idea of immutability etc. but there's just too much friction to get into it.
At least with Erlang it still feels like programming, Haskell just feels "wrong".