| From: Grant Rettke (grettke at acm.org) Date: Wed Feb 18 11:45:38 EST 2009 |
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On Wed, Feb 18, 2009 at 10:22 AM, Stephen Bloch <sbloch at adelphi.edu> wrote: > "define-struct" is an INVENTOR. It doesn't produce phonebook entries, but > one of the things it produces is a FACTORY (named "make-entry") which can > then be used to churn out as many phonebook entries as you wish. By analogue, a variable is a MAP with one item on it; it shows you the location of that thing that the factory just churned out.
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