From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?iso-8859-1?Q?Court=E8s?=) Newsgroups: gmane.lisp.guile.user Subject: Re: Guile Introspection Date: Sun, 08 Jul 2007 17:18:46 +0200 Message-ID: <87y7hq2aax.fsf@chbouib.org> References: <266326.97925.qm@web37913.mail.mud.yahoo.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1183907971 8050 80.91.229.12 (8 Jul 2007 15:19:31 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Sun, 8 Jul 2007 15:19:31 +0000 (UTC) To: guile-user@gnu.org Original-X-From: guile-user-bounces+guile-user=m.gmane.org@gnu.org Sun Jul 08 17:19:30 2007 connect(): Connection refused Return-path: Envelope-to: guile-user@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1I7YXo-0001dO-TY for guile-user@m.gmane.org; Sun, 08 Jul 2007 17:19:29 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1I7YXo-0001JA-2M for guile-user@m.gmane.org; Sun, 08 Jul 2007 11:19:28 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1I7YXj-0001J3-VI for guile-user@gnu.org; Sun, 08 Jul 2007 11:19:23 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1I7YXh-0001Ir-Fo for guile-user@gnu.org; Sun, 08 Jul 2007 11:19:22 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1I7YXh-0001Io-AO for guile-user@gnu.org; Sun, 08 Jul 2007 11:19:21 -0400 Original-Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1I7YXg-0005KU-WD for guile-user@gnu.org; Sun, 08 Jul 2007 11:19:21 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1I7YXa-00076I-O6 for guile-user@gnu.org; Sun, 08 Jul 2007 17:19:15 +0200 Original-Received: from adh419.fdn.fr ([80.67.176.9]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 08 Jul 2007 17:19:14 +0200 Original-Received: from ludo by adh419.fdn.fr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 08 Jul 2007 17:19:14 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 42 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: adh419.fdn.fr X-URL: http://www.laas.fr/~lcourtes/ X-PGP-Key-ID: 0xEB1F5364 X-PGP-Key: http://www.laas.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 821D 815D 902A 7EAB 5CEE D120 7FBA 3D4F EB1F 5364 X-OS: i486-pc-linux-gnu User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux) Cancel-Lock: sha1:vF4nxcjnqIL/zXCqrPG1hHJr1bo= X-detected-kernel: Linux 2.6, seldom 2.4 (older, 4) X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General Guile related discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: guile-user-bounces+guile-user=m.gmane.org@gnu.org Errors-To: guile-user-bounces+guile-user=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.user:6027 Archived-At: Hi, Mike Gran writes: > For example, how can I write a function that prints its own name? In Scheme, functions are first-class objects that are not necessarily bound to a top-level name. For instance, a `lambda' is nameless: (lambda args ...) Thus, there is no generic, portable way to find the symbol under which a procedure is bound (_if_ it's bound). But... > Or, what is the scheme version of the following C code In Guile, "primitive procedures" (i.e., procedures written in C) have their "official" name recorded in them. For instance: guile> 1+ # guile> (procedure-name 1+) 1+ Happily, it also works with regular procedures defined with `define': guile> (define (f x) x) guile> (procedure-name f) f ... but doesn't work with lambdas: guile> (procedure-name (lambda args args)) #f As for the file name and line number, you can in theory get them (provided Guile runs in "debug" mode) using `procedure-source' and `source-properties', although the details escape me now. Thanks, Ludovic. _______________________________________________ Guile-user mailing list Guile-user@gnu.org http://lists.gnu.org/mailman/listinfo/guile-user