Haskell: Parse error pattern using ValTypes

Question

Can someone please explain why I keep getting this error? Especially when a different module, on the same laptop, can run the same expression and it be fine?

minCompare :: ValType -> ValType -> ValType
minCompare leftSide rightSide
     leftSide == rightSide = leftSide
     leftSide < rightSide = leftSide
     otherwise = rightSide

Haskell code screenshot

Answer 1

You are so close! You are just missing the guard symbol | before the conditions.

minCompare :: ValType -> ValType -> ValType
minCompare leftSide rightSide
    | leftSide == rightSide = leftSide
    | leftSide < rightSide = leftSide
    | otherwise = rightSide