Jens Axel Søgaard <[email protected]> wrote:
2016-01-28 21:48 GMT+01:00 jmhuffle <[email protected]>:
Dear Racket friends,
I am surprised because the following code works in "lang racket", but
not in R6RS: in this last case, I got a contract violation for the value
associated with "alignment within the horizontal panel. Is there a way to
include such a horizontal panel in a program using R6RS, please?
(...)
In R6RS '(left top) will allocate a list consisting of mutable cons cells.
In Racket '(left top) will allocate a list of immutable cons cells.
OK, thanks. But a point is still obscure, for me. In R6RS, if the
library "mutable-pairs" is not used, lists are supposed to be
immutable, aren't they? So, they are immutable because we cannot use
"set-car!" and "set-cdr!", provided by this library, but they are not
"immuable enough" for Racket's graphical objects... Strange...
Yours sincerely,
J.-M.
----------------------------------------------------------------
This message was sent using IMP, the Internet Messaging Program.
--
You received this message because you are subscribed to the Google Groups "Racket
Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
