[plt-scheme] scribblings on PLT Scheme 4.0

From: Jacob Matthews (jacobm at cs.uchicago.edu)
Date: Mon May 28 11:13:38 EDT 2007

On 5/27/07, Andrew Reilly <andrew-scheme at areilly.bpc-users.org> wrote:
> On Thu, May 24, 2007 at 11:48:57AM -0500, Jacob Matthews wrote:
> > doesn't look like this will be a major source of incompatibility for
> > PLaneT packages: only 30 modules (not packages, module files) in all
> > most-current-versions of PLaneT packages (1359 total) contain any uses
> > of set-car! or set-cdr!.
> Yes, but how many of them use append! or sort! or the like?

19. [The functions I tested for were append!, reverse!, sort!, and
merge-sorted-lists!.] Interestingly, there are only 3 modules that use
either set-car! or set-cdr! and also use one of those higher-level


Posted on the users mailing list.