How to [temporarily] suppress “defined but not used” warnings?

Question

When I prototype Haskell programs, I always get hundreds of warnings like this (not joking):

/Users/bob/SourceCode/course/is/expriment/LiftedSpine2.hs:70:15:
    W         


        

Answer 1

GHC has two warnings flags which can trigger Warning: Defined but not used.

You need some combination of the command line flags -fno-warn-unused-binds and -fno-warn-unused-matches.