[Haskell-beginners] HLint fails to give suggestions

[Mateusz Kowalczyk]

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On 15/05/13 19:21, irfan hudda wrote:
> Because the code fun1 :: Int -> String fun1 1 = "hell" fun1 2 = 3 
> has obvious errors I was expecting HLint to display those errors.
> 

I think you don't understand what HLint is supposed to do. It's GHC's
job to show you type errors. HLint is only there to give you
suggestions about style. I believe that the most it can do in terms of
errors is to throw a fit when you have invalid syntax (not the case here).

Example usage:
> module Test where
> 
> main :: IO () main = print $ show $ id $ id $ id 5

I get
> Test.hs:5:23: Error: Evaluate Found: id $ id $ id 5 Why not: (id $
> id 5)
> 
> Test.hs:5:28: Error: Evaluate Found: id $ id 5 Why not: id 5

> Test.hs:5:33: Error: Evaluate Found: id 5 Why not: 5
> 
> 3 suggestions


- -- 
Mateusz K.
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