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Message-ID:  <i7bp35ey27.fsf@hilbert.math.albany.edu>
Date:         Tue, 25 Jan 2011 11:40:48 -0500
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From: William F Hammond <hammond@CSC.ALBANY.EDU>
Subject: Re: \clist_length:N and \clist_nth:N
To: LATEX-L@listserv.uni-heidelberg.de
In-Reply-To:  <3986.1295947424@cl.cam.ac.uk> (Robin Fairbairns's message of
              "Tue, 25 Jan 2011 09:23:44 +0000")
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Status: R

Robin Fairbairns <Robin.Fairbairns@CL.CAM.AC.UK> writes:

> the "lisp heritage" is no more than simple use of some lisp names
> for some latex internal operations (e.g., car, cdr).  it's a long
> time (>40 years) since i learned lisp, but i don't remember a
> special name for items in a lisp list.  . . .  i think element is
> as good as it gets, in this context.

In Gnu Emacs Lisp its name is "elt".

Cheers.

                                    -- Bill

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P.S.  To refresh after 40 years:

Go to the "scratch" buffer in Gnu Emacs and enter
    (setq myseq '("a" "b" "c" "d" "e"))
then press C-j to see:
    ("a" "b" "c" "d" "e")
Then
    (elt myseq 3)
which returns:
    "d"
With the cursor over "elt" above enter  C-h f
to see the help for "elt":
    elt is a built-in function in `C source code'.
    (elt SEQUENCE N)
    
    Return element of SEQUENCE at index N.

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