 
            
            
            
            
                23 Apr
                
                    2015
                
            
            
                23 Apr
                
                '15
                
            
            
            
        
    
                5:15 a.m.
            
        Henning Thielemann wrote:
Show and Read instances should process Strings representing Haskell code, and I guess, Haskell code with the same type as the represented value. Thus the NF should be part of the formatted value.
Agreed. Instead, add stand-alone functions: readNF = makeNF . read showNF = show . getNF