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: make-hash-table: Wrong type argument Date: Thu, 10 Jul 2008 09:35:54 +0200 Message-ID: <871w228a3p.fsf@gnu.org> References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1215675414 25498 80.91.229.12 (10 Jul 2008 07:36:54 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 10 Jul 2008 07:36:54 +0000 (UTC) To: guile-user@gnu.org Original-X-From: guile-user-bounces+guile-user=m.gmane.org@gnu.org Thu Jul 10 09:37:38 2008 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 1KGqiH-00031n-Nc for guile-user@m.gmane.org; Thu, 10 Jul 2008 09:37:14 +0200 Original-Received: from localhost ([127.0.0.1]:41446 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KGqhQ-0000Y8-4B for guile-user@m.gmane.org; Thu, 10 Jul 2008 03:36:20 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KGqhL-0000XZ-Ql for guile-user@gnu.org; Thu, 10 Jul 2008 03:36:15 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KGqhI-0000XD-Sd for guile-user@gnu.org; Thu, 10 Jul 2008 03:36:15 -0400 Original-Received: from [199.232.76.173] (port=57362 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KGqhI-0000XA-MW for guile-user@gnu.org; Thu, 10 Jul 2008 03:36:12 -0400 Original-Received: from mx20.gnu.org ([199.232.41.8]:7987) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1KGqhI-0001tT-8L for guile-user@gnu.org; Thu, 10 Jul 2008 03:36:12 -0400 Original-Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by mx20.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1KGqhG-0003Pi-QL for guile-user@gnu.org; Thu, 10 Jul 2008 03:36:11 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1KGqh9-0007hs-0s for guile-user@gnu.org; Thu, 10 Jul 2008 07:36:03 +0000 Original-Received: from 193.50.110.234 ([193.50.110.234]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 10 Jul 2008 07:36:03 +0000 Original-Received: from ludo by 193.50.110.234 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 10 Jul 2008 07:36:03 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 31 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 193.50.110.234 X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 23 Messidor an 216 de la =?iso-8859-1?Q?R=E9volution?= X-PGP-Key-ID: 0xEA52ECF4 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 821D 815D 902A 7EAB 5CEE D120 7FBA 3D4F EB1F 5364 X-OS: i686-pc-linux-gnu User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux) Cancel-Lock: sha1:6QtpE9DqFPWvNu/Sbaw0oz5eFtQ= X-detected-kernel: by mx20.gnu.org: Linux 2.6, seldom 2.4 (older, 4) X-detected-kernel: by monty-python.gnu.org: 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:6637 Archived-At: Hi, "Shakthi Kannan" writes: > Newbie here. I am trying to pass key/value to a procedure to add it to > the hash-table. It fails at: > > "you"ERROR: In procedure hash_fn_create_handle_x: > ERROR: Wrong type argument in position 1: "foo" Note: If you run Guile with `--debug', you should get a nice backtrace here. The problem is that you pass `hash-set!' the string "foo" as its first argument, while it expects a hash table (as returned by `make-hash-table'). I think there is some confusion: > (define make-dictionary > (lambda (name size) > (lambda () > (define name (make-hash-table size))))) `define' here is an "internal define", i.e., it defines a variable that's local to the lambda where it occurs. Furthermore, `name' is taken literally, it's not substituted by the actual parameter passed to `make-dictionary'. Hope this helps, Ludovic.