Re: OFFTOPIC: recursive typedef

[Stephane Duguay <sduguay Matrox COM>]

Hi,

I think you can do it with LISP but not with C.

On Wed, 28 Feb 2001, you wrote:
> On 01 Mar 2001 01:33:33 +0000, Carlos Pereira wrote:
>
> > > I have this function type definition:
> > >
> > > typedef void (*NxpElementIterateFunc) (NxpElement *elem,
> > >                                       gpointer func,
> > >                                       gpointer user_data);
> > >
> > > but what I would really like is:
> > >
> > > typedef void (*NxpElementIterateFunc) (NxpElement *elem,
> > >                                       NxpElementIterateFunc func,
> > >                                       gpointer user_data);
> > >
> > > Can it be done in C?
> > > Thanks in advance.
> >
> > I doubt, at least from my experience.
> > You can use this:
> >
> > typedef struct _app_object {
> > void (*function) (struct _app_object *);
> > struct _app_object *next, *before; } app_object;
> >
> > but not this:
> >
> > typedef struct _app_object {
> > void (*function) (app_object *);
> > app_object *next, *before; } app_object;
> >
> > Carlos
> >
> > _______________________________________________
> > gtk-app-devel-list mailing list
> > gtk-app-devel-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
>
> AFAIK ,it can't be done. Don't think any programming language will allow
> this, The type has to be know before it can be used... Just curious,
> what purpose will it serve? 
>
>
> -- 
> Jeroen Benckhuijsen
>
> Software Engineer
> Phoenix Software
>
> _______________________________________________
> gtk-app-devel-list mailing list
> gtk-app-devel-list gnome org
> http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
-- 
____________________________________

Stephane Duguay
Software Designer stagiaire
Matrox Graphics Inc.

E-Mail : sduguay matrox com
Tel. : (514) 822-6000 ext. 7331
Fax : (514) 685-7030
____________________________________