Lutz wrote:I have a new page on
http://newlisp.org/index.cgi?FAQ , (not integrated yet into the menu) It talks also about the philosophical differences between Common Lisp and newLISP in the second paragraph: "Why newLISP, why not one of the other standard LISPs ?" .
Lutz
from:
http://newlisp.org/index.cgi?page=Diffe ... ther_LISPs
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VII.
'nil' and 'true' are boolean constants in newLISP. In Common Lisp and
Scheme they have an additional role as list terminator:
;; Common Lisp and Scheme
(cons 'x nil) => (x)
;; newLISP
(cons 'x nil) => (x nil)
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Not true for Scheme:
* scheme48
Welcome to Scheme 48 1.3 (made by root on Wed Aug 24 22:59:32 CEST 2005)
Copyright (c) 1993-2005 by Richard Kelsey and Jonathan Rees.
Get more information at
http://www.s48.org/.
> (cons 'x nil)
Error: undefined variable
nil
1> (cons 'x '())
'(x)
Scheme has separate notation for false (#f -- false, #t -- true),
and end of list '().
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X.
newLISP has only one operator for equality, the equal sign = in other
LISPs you may have 4, equal, eql, eq =, for expressions, symbols or
numbers, symbols and numbers.
........
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Common Lisp has more than 4:
eq, eql, equal, equalp, =, string=, string-equal, char=, char-equal.