For the moment I'd like to do something which is as little work on my side
as possible - so I'd rather avoid them.
(the real optimization will be to communicate not over strings but directly
- but not now)
Best,
Martin
Am Montag, 30. Juli 2018 12:17:08 UTC+2 schrieb Waldek Hebisch:
>
> Martin R wrote:
> >
> > Dear all,
> >
> > I was trying to turn an SExpression into a (compact) String. My final
> goal
> > is to try to avoid "unparse$InputForm" in the sage interface.
> >
> > In particular, I would prefer a solution which does not contain any
> > unnecessary whitespace.
> >
> > I know of
> >
> > FORMAT('NIL, "~S", (-1/2)::INFORM)$Lisp
> >
> > but this has some undesirable side effects with the rootOf operator,
> which
> > I do not understand:
> >
> > r := integrate(72000/(1+x^5),x)::INFORM
> > FORMAT('NIL, "~S", r)$Lisp
> >
> > (5)
> > "(/
> > (+
> > (*
> > (+
> > (^
> > (+
> > (+
> > (* -3
> > (^
> >
> > #1=(|rootOf|
> ^^
> > (+
> > (+
> > (+
> >
> > (^
> > #2=(|rootOf|
> ^^
>
> You mean those markers? This is standard Lisp way of printing
> repeated substructures: first time Lisp adds the marker, later
> #1# means marked subexpression. It is possible to turn this
> off, but normally markers makes output smaller so you should like
> them.
>
> --
> Waldek Hebisch
>
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