Re: Are generic linked lists possible in Fortran95?

Rich Townsend <rhdt@xxxxxxxxxxxxxxxxxxx> wrote:

> Paul Van Delst wrote:

> > [about generic lists]
> > Is this doable in Fortran95 ?
> >
>
> In a word, no. I'm sure the brains of the group can explain specifically why
> not, but this is just to give a quick answer. It really comes down to the fact
> that Fortran is strongly typed, IMHO.
>
> However, it might be sort of possible in F2003, where (IIRC) you can have
> typless pointers or somesuch.

There are various hacks one can do in f95, but basically, no, the
language doesn't support that directly.

There are multiple ways in f2003. For a start, this is one of the most
basic examples of what type extension is about. I don't think I'll try a
tutorial on the subject on the fly in a posting here.

Also, yes, you could use "typeless pointers" (which you won't find by
that name, but are there, "disguised" as a C interop feature, but
useful in contexts unrelated to C).

--
Richard Maine | Good judgement comes from experience;
email: last name at domain . net | experience comes from bad judgement.
domain: summertriangle | -- Mark Twain
.