dean, is this what you are describing?
(let L (list 1 2 3)
(setq L (append L (4)))
(printsp L) )
(1 2 3 4)
The key to this is understanding how let works. It restores the prior value
after execution. See http://software-lab.de/doc/refL.html#let
Defines local variables. The value of the symbol sym - or the values of the
symbols sym in the list of the second form - ***are saved** and the symbols
are bound to the evaluated any arguments. The 64-bit version also accepts
lst arguments in the second form; they may consist only of symbols and
sublists, and match the any argument (destructuring bind). prg is executed,
then the symbols ***are restored to their original values***.
On Fri, Feb 10, 2017 at 3:22 PM, dean <deangwillia...@gmail.com> wrote:
> Hi
> I've seen that I can alter local/let'd atoms? via inc/dec i.e. (inc
> 'Some_atom)
> which gets me a long way...
> ...but what about list elements?
>
>
> (setq L (0 0 0))
> (de doit ()
> #(let L (0 0 0)
> (setq L (insert '1 (remove '1 L) 2))
> (prinl "L is " L)
> #)
> )
>
> When I "setq" L this works but can I do it (somehow) when L is created
> with "let"?
>
