[Haskell-cafe] Hidden types and scope

Lana Black lanablack at amok.cc
Wed Jul 10 15:56:49 UTC 2019

A followup question. What is the reason case and let expressions are 
treated differently in this case? I can see the error message saying 
about the type variable escaping its scope, but I don't understand how 
exactly this can happen with let.

More information about the Haskell-Cafe mailing list