Code Red > AutoLISP (Vanilla / Visual)

How to determine equality of nesting

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Lee Mac:

--- Quote from: bruno_vdh on June 14, 2019, 04:40:01 AM ---
--- Quote ---_$ (foo '(1) '(1 . 1))
nil

--- End quote ---

If we consider this:

--- Code: ---_$ (car '(1.1))
1.1
_$ (car '(1))
1
_$ (cdr '(1.1))
nil
_$ (cdr '(1))
nil

--- End code ---

--- End quote ---

'(1 . 1) is very different to '(1.1) - the former represents a dotted pair, the latter a list containing a single item.

As such, the comparison would become:

--- Code - Auto/Visual Lisp: ---_$ (car '(1 . 1))1_$ (car '(1))1_$ (cdr '(1 . 1))1_$ (cdr '(1))nil

bruno_vdh:
Yes I was too fast in my conclusions, thanks for correcting my mistake

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