On Sat, Feb 25, 2017 at 09:13:46AM +0200, Mike Pechkin wrote:
> ast start point:
> http://ideone.com/zPndpA
>
> On Sat, Feb 25, 2017 at 9:01 AM, Christopher Howard <
> christopher.how...@qlfiles.net> wrote:
>
> > Hi list. How do I *destructively* modify the value of one element in a
> > list? E.g.
> >
> > (setq Lst (1 2 3 4))
> >
> > How do I set the second element to be 10, without creating a new list,
> > and without using "con" to change a lot of the list?
In this concrete case:
(set (cdr Lst) 10)
or, more generally:
(set (nth Lst 2) 10)
♪♫ Alex
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