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                    2006
                
            
            
                30 Nov
                
                '06
                
            
            
            
        
    
                9:08 p.m.
            
        On 11/30/06, Huazhi (Hank) Gong 
Thanks, it make sense here. However, like I want to choose s[1,3,6,10] or something like this. Are there some straightforward function or operator for doing this job? The !! operator in haskell seems does not support multiple indecies.
If you're trying to do random access on a list, you should rethink why
you're using a list.
-- 
Taral