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                    2006
                
            
            
                10 Nov
                
                '06
                
            
            
            
        
    
                1:57 p.m.
            
        On 11/10/06, Robert Dockins 
I'm don't thing your criteria (which seems to be related to the ease with which the function is defined in terms of other, pre-existing functions) is a good discriminator for what should and what should not be in the standard libraries.
I don't think so either. It certainly doesn't seem to categorize most of the libraries. Is this another case of the bikeshed problem?