So it will look like:
((1 -1) (1 -2) (1 -3) ... (2 -1) ... ) each pair being unordered
As a test, I write this line, which I want to give ((1 -1)):
(( (first pos) (first neg) ))
And out pops this error:
*** - EVAL: ((FIRST POS) (FIRST NEG)) is not a function name
I''ve put ''s all over the place and I can''t get it to work.
The search engines have been quite unhelpful too.
Beating head against wall hasn''t helped either.
(help please)
~V''lion
Bugle4d
frustrating lisp error
Author
I''m trying to setup a list of this form
((...) (...) etc)
So I write this in the interpreter(clisp)
(setq pos ''(1 2 3 4 5))
(setq neg ''(-1 -2 -3 -4 -5))
I want to pair each member with all the other members- a permutation, I guess.
So it will look like:
((1 -1) (1 -2) (1 -3) ... (2 -1) ... ) each pair being unordered
As a test, I write this line, which I want to give ((1 -1)):
(( (first pos) (first neg) ))
And out pops this error:
*** - EVAL: ((FIRST POS) (FIRST NEG)) is not a function name
I''ve put ''s all over the place and I can''t get it to work.
The search engines have been quite unhelpful too.
Beating head against wall hasn''t helped either.
(help please)
~V''lion
Bugle4d
So it will look like:
((1 -1) (1 -2) (1 -3) ... (2 -1) ... ) each pair being unordered
As a test, I write this line, which I want to give ((1 -1)):
(( (first pos) (first neg) ))
And out pops this error:
*** - EVAL: ((FIRST POS) (FIRST NEG)) is not a function name
I''ve put ''s all over the place and I can''t get it to work.
The search engines have been quite unhelpful too.
Beating head against wall hasn''t helped either.
(help please)
~V''lion
Bugle4d
Did you try using the list special form? e.g.
(list (list (car pos) (car neg)) (list (cadr pos) (cadr neg)))
should give ((1 -1) (2 -2))
edit: left out a parentheses
[edited by - SiCrane on January 3, 2004 12:04:54 AM]
(list (list (car pos) (car neg)) (list (cadr pos) (cadr neg)))
should give ((1 -1) (2 -2))
edit: left out a parentheses
[edited by - SiCrane on January 3, 2004 12:04:54 AM]
Author
On the sibject of lisp errors, I''m getting this quite incomprehensible error.
*** - ENDP: A true list must not end with 1
What is that trying to tell me ?
Thanks !
~V''lion
Bugle4d
*** - ENDP: A true list must not end with 1
What is that trying to tell me ?
Thanks !
~V''lion
Bugle4d
Probably you''ve got an expression that reduces to (endp 1), which the lisp environment complains about because 1 isn''t a list.
Use backquote
(list (list (car pos) (car neg)) (list (cadr pos) (cadr neg)))=>`((,(car pos) ,(car neg)) (,(cadr pos) ,(cadr neg))) This topic is closed to new replies.
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