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Extension to MAP



    Date: 20 Mar 1987 16:24-EST
    From: VERACSD@A.ISI.EDU

	 I'd really like to see MAP take a sequence as its first
    argument, and have the results be put into that sequence.
	 The first N elements of the sequence would be modified
    where N is the min of the lengths of the argument sequences,
    (including the sequence passed as the first arg).
	 This seems upward-compatible and easy to implement, and
    would be extremely handy.
	 Any comments?

It sounds like a good idea, but what if the sequence is () ?