nth-replace (mergesort's achilles heel)

[BlackBox]

i thought the point was the replace the nth item, not every matching item.

*Touches finger to nose*

... That's why Stefan (here), and Lee (in the linked thread) advise against using SUBST.

[alanjt]

*Touches finger to nose*

... That's why Stefan (here), and Lee (in the linked thread) advise against using SUBST.

Oops, his and liberty's post as one.

[LibertyOne]

OK - I see the point in not using subst.

I would like to tinker around with this myself a bit but don't have an AutoLisp interpreter handy at the moment and my fingers are really itching!
Could someone copy the following code and tell me what is returned? Thanks!

(setq mylist '(a b c d e f))
(setq flist (cons (nth 3 mylist) nil))

[BlackBox]

I would like to tinker around with this myself a bit but don't have an AutoLisp interpreter handy at the moment and my fingers are really itching!
Could someone copy the following code and tell me what is returned?

[LibertyOne]

ok - no answer is also an answer...

[BlackBox]

ok - no answer is also an answer...

I read your request; the "Implied Facepalm" image IS what was returned on my end...

Okay, I'll stop... Since you were a good sport about it, here you go :

_$ (setq mylist '(a b c d e f))
(A B C D E F)
_$ (setq flist (cons (nth 3 mylist) nil))
(D)
_$

[LibertyOne]

Thanks for the reply, RenderMan. I really have to complain a bit now that I have no access to an AutoCAD command line. Being able to write code the last 13 years and then having no AutoCAD is like going cold-turkey!

I was assuming that (D) was going to be returned but wasn't 100% sure. (About 2% was thinking (A B C D)) I've been reading about cons cells lately, and wanred to practice...

[BlackBox]

Thanks for the reply, RenderMan.

You're welcome.

I really have to complain a bit now that I have no access to an AutoCAD command line. Being able to write code the last 13 years and then having no AutoCAD is like going cold-turkey!

I have nowhere near your experience, but if things do not improve at my place of work in the very immediate future, I too may be able to relate to your dilemma.

[Lee Mac]

Thanks for the nod Renderman, appreciated

FYI, here is the related function on my site:

http://lee-mac.com/substn.html