[Haskell-cafe] question regarding the $ apply operator

[Ting Lei]

Hi

I have a naive question regarding the basic use of the $ operator, and I am confused why certain times it doesn't seem to work.
e.g.
The following works:

applySkip i f ls = (take i) ls ++ f (drop i ls)

But the following doesn't:

applySkip i f ls = (take i) ls ++ f $ drop i ls

which gives me an error:

    The first argument of ($) takes one argument,
    but its type `[a0]' has none
    In the expression: (take i) ls ++ f $ drop i ls
    In an equation for `applySkip':
        applySkip i f ls = (take i) ls ++ f $ drop i ls


FYI, I am using GHC 7.0.3 for this.
Thanks in advance for comments.


Ting
 		 	   		  
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