[Haskell-beginners] let indenting problems

[Miguel Pignatelli]

What about...

mySort xs = let myCompare x y 	
		 | lx < ly = LT
		 | lx == ly = EQ
		 | lx > ly = GT
		   where
		    lx = length x
		    ly = length y
		in sortBy myCompare xs


M;


7stud wrote:
> I get indenting errors with the following attempts to use let:
> 
> -----
> import Data.List (sortBy)
> 
> mySort xs = sortBy myCompare xs
>     let lx = length x
>         ly = length y
>     in where myCompare x y 
>               | lx < ly    = LT    
>               | lx == ly   = EQ
>               | lx > ly    = GT  
> 
> ------------------
> 
> import Data.List (sortBy)
> 
> mySort xs = sortBy myCompare xs
>     where myCompare x y    
>         let lx = length x
>             ly = length y
>         in
> 
>         | lx < ly    = LT
>         | lx == ly   = EQ
>         | lx > ly    = GT  
> 
> -------------
> 
> import Data.List (sortBy)
> 
> mySort xs = sortBy myCompare xs
>     where myCompare x y    
>         let lx = length x
>             ly = length y
>         in  | lx < ly    = LT
>             | lx == ly   = EQ
>             | lx > ly    = GT 
> 
> -------------
> 
> 
> This is what I ended up with:
> 
> -------
> import Data.List (sortBy)
> 
> mySort xs = sortBy myCompare xs
>     where myCompare x y  
>               | lx < ly    = LT
>               | lx == ly   = EQ
>               | lx > ly    = GT            
>              where lx = length x
>                    ly = length y
> -------
> 
> But I would like to know how to use let.
> 
> 
> 
> 
> 
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