newlispfanclub.alh.net

Posted: **Sat Jun 16, 2007 7:57 pm**

Hi Lutz,

Im wondering if the following is possible in newlisp...
I could not find a function that does this..

i.e.

I have a list -> (setq A '( (+ x 1) (- x 2) ))

Now I want to COPY/MIRROR that list to B..
But in this manner that everything that is changed inside List A also will be changed in list B.

This means that list B is a Symbolic-Link/Mirror to list A..
everything changes in A changes in B..
(not reverse nessesarly)

>(setq A '( (+ x 1) (- x 2) ))
( (+ x 1) (- x 2) )

>(mirror A B)
( (+ x 1) (- x 2) )

> B
( (+ x 1) (- x 2) )

>(pop A 0)
( (- x 2) )

> B
( (- x 2) )

Norman.

Posted: **Sat Jun 16, 2007 8:56 pm**

as contexts are passed by reference you could do the following:

Code: Select all

> (set 'A:var '((+ x 1) (- x 2)))
((+ x 1) (- x 2))
> (set 'B A)
A
> A:var
((+ x 1) (- x 2))
> B:Var
nil
> (pop A:var)
(+ x 1)
> B:var
((- x 2))
>

Lutz

Posted: **Sat Jun 16, 2007 9:27 pm**

aaaaaa look... I realy must get starting on contexts now..because its
something i never use inside newlisp... Great example...thanks!

newlispfanclub.alh.net

Question/request?

Question/request?