[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: can s-exprs represent a graph without eval?

>>>>> "James" == James McCartney <asynth@io.com> writes:

    James> S-exprs can represent trees of data easily.  I am wondering
    James> if s-exprs, or some other syntax, can be used to represent
    James> a graph just on reading, without eval.

    James> I assume something simple could be done where you have a
    James> syntax to bind symbols, and then access their bindings.
    James> Does Lisp do this already?  or is graph data just written
    James> as Lisp code and eval'ed?

Some lisps have ways of representing circular list structure; that
might be what you want.  See
for one example.
People studying literature rarely say anything that would be of the
slightest use to those producing it.
        -- Paul Graham