XData Filter List

[DGCSCAD]

Hello all,

I can't figure this one out:

Given:

test_XD = "12345"

Why does this work...

(setq test_SS (ssget "X" '((0 . "INSERT") (-3 ("12345")) (410 . "~Model"))))

<selection set: ###>

...but this does not?

(setq test_SS (ssget "X" '((0 . "INSERT") (-3 (test_XD)) (410 . "~Model"))))

Error: bad SSGET list value

[komondormrex · Accepted solution]

because you cannot quote lisp expressions.

try this

(setq test_SS (ssget "X" (list '(0 . "INSERT") (list -3 (list test_XD)) '(410 . "~Model"))))

[DGCSCAD]

Thank you!

I had just figured it out and came back to post:

(setq test_SS (ssget "X" (list '(0 . "INSERT") '(410 . "~Model") (cons -3 (list (list test_XD))))))

Much obliged Komondormrex.

I had a bit of a brain cramp on that one. lol

[Kent1Cooper]

To elaborate a little:

A "quoted list" [your (ssget) filter list with the apostrophe ' at the beginning] cannot contain anything that needs to be evaluated, but everything in it must be taken literally.  Your test_XD is a variable that would require evaluation, so if that is to be in there, you must use the explicit (list) function, not the quoted-list '( shortcut.  Note in @komondormrex's suggestion that within that (list) function, some of the sub-lists can still be quoted lists -- it's just the one involving the evaluation of a variable that can't be.

Read about the (list) and (quote) functions in the AutoLisp Reference for more detailed understanding.

[DGCSCAD]

Thank you Mr C, will do.

I had known this but it escaped me for some reason.

Imagine my brain as a shot glass, and LISP as a gallon water. If you pour a gallon of water into a shot glass, some of it's gonna spill over the sides.

All kidding aside, thank you both for the help. It's always appreciated.