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Re: need for quoting in Lisp
Date: 28 Oct 1985 16:07-EST
illustrate very concretely, imagine a Schemelike language which is NOT
it's own metalanguage, in which there are no macros. For any
construct, we can tell unambiguously whether we have code or data
in our hands, and hence quoting will be unnecessary.
To Mr. Pearlmutter's excellent exposition I would like to add the observation
that, 25 years ago, LISP was originally conceived in exactly these terms.
Allow me to add to the table of examples the representation as LISP
Regular Scheme Scheme0 M-expressions
(car (append x y)) (car (append x y)) car[append[x; y]]
(car (quote (append x y))) (car [APPEND X Y]) car[(APPEND X Y)]
(append (f x) (g (quote y)) (append (f x) (g Y) [H Z]) append[f[x]; g[Y]; (H Z)]
(quote (h z)))