From: Damien Mattei <damien.mattei@gmail.com>
To: guile-user <guile-user@gnu.org>
Subject: overloading an existing operator in Guile
Date: Tue, 3 Oct 2023 11:13:30 +0200 [thread overview]
Message-ID: <CADEOaddS5BKnzX2on7ptOJY90dWHKn7cw0wBEpbMqRe09PJTzQ@mail.gmail.com> (raw)
hello,
is it possible to overload an existing operator in Guile?
example overload + to concatenate vectors.
for example in Scheme (+ i admit) i can do :
; first stage overloading
(define-overload-existing-operator +)
; second stage overloading
(overload-existing-operator + vector-append (vector? vector?))
and use it like that:
> (+ #(1 2 3) #(4 5 6))
'#(1 2 3 4 5 6)
> (+ #(1 2 3) #(4 5) #(6 7 8 9))
'#(1 2 3 4 5 6 7 8 9)
> {#(1 2) + #(3) + #(4 5 6)}
'#(1 2 3 4 5 6)
is it possible and how to do it using GOOPS (guile object oriented
programming system) , i already did some sort of thing with new object
, but not with an existing operator like + that apply to numbers only.
Regards,
Damien
next reply other threads:[~2023-10-03 9:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-03 9:13 Damien Mattei [this message]
2023-10-03 9:19 ` overloading an existing operator in Guile Jean Abou Samra
2023-10-03 10:33 ` Damien Mattei
2023-10-03 18:24 ` Damien Mattei
2023-10-03 18:34 ` Maxime Devos
2023-10-03 18:41 ` Jean Abou Samra
2023-10-03 19:01 ` Damien Mattei
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/guile/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CADEOaddS5BKnzX2on7ptOJY90dWHKn7cw0wBEpbMqRe09PJTzQ@mail.gmail.com \
--to=damien.mattei@gmail.com \
--cc=guile-user@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).