In many forms of Lisp, an unadorned symbol is taken to be a variable;
(quote) lets it evaluate to itself. In the CLIPS language used by
Jess, variables always have a wart of some kind (? or $?) and so a
plain symbol is unambigiously just a symbol.
On Nov 21, 2010, at 3:59 AM, Donald Winston wrote:
Some things are coming back to me from my college AI class several
years ago when we dabbled in Lisp (on a mainframe). I remember
having to use the quote function frequently. I believe an apostrophe
was syntatic sugaring for the same thing. How come this not
necessary in Jess?
Donald Paul Winston
[email protected]
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Ernest Friedman-Hill
Informatics & Decision Sciences, Sandia National Laboratories
PO Box 969, MS 9012, Livermore, CA 94550
http://www.jessrules.com
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