[Haskell-beginners] Defaulting the following constraint ....

[Alan Buxton]

Hi

 

I have something like this - purpose is that I need to drop redundant .0 in
a whole number - so to show 1.2345 as 1.2345 and to show 1.0 as 1

 

module Test where

 

niceShow x = if (isInt x) then show (floor x) else show x

 

isInt x = x == fromInteger (floor x)

But the hlint in my vim plugin keeps warning me that

 

test.hs|3 col 38 warning| Defaulting the following constraint(s) to type
`Integer'

||            (Integral a0) arising from a use of `floor' at
/tmp/test.hs:3:38-42

||            (Show a0) arising from a use of `show' at /tmp/test.hs:3:32-35

|| In the first argument of `show', namely `(floor x)'

|| In the expression: show (floor x)

|| In the expression: if (isInt x) then show (floor x) else show x

 

What does this mean? And what would I need to do in order to prevent this
warning?

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