From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Pascal J. Bourguignon" Newsgroups: gmane.emacs.help Subject: Re: Possible to access previous arg in `interactice' call? Date: Sat, 02 Aug 2014 22:57:04 +0200 Organization: Informatimago Message-ID: <87iomar4nz.fsf@kuiper.lan.informatimago.com> References: <8738dff5os.fsf@gmail.com> <61fe3fcb-0762-4f7a-910a-d80b67ab072b@default> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1407013224 6880 80.91.229.3 (2 Aug 2014 21:00:24 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 2 Aug 2014 21:00:24 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sat Aug 02 23:00:19 2014 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XDgPZ-0004wd-IW for geh-help-gnu-emacs@m.gmane.org; Sat, 02 Aug 2014 23:00:17 +0200 Original-Received: from localhost ([::1]:45881 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XDgPZ-0003VU-9K for geh-help-gnu-emacs@m.gmane.org; Sat, 02 Aug 2014 17:00:17 -0400 Original-Path: usenet.stanford.edu!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 30 Original-X-Trace: individual.net m8Foruu+jvjiJhR+96YVtgrMPkUmpcLRD3Coys5v/YP3i4pJgP Cancel-Lock: sha1:YmQ0NDlkZjc2YzI5YjgzYmY1NWNiZjU3YzNhODAzZWU0NDZmNjBlOQ== sha1:cYQTfObnGeGFdz+4jyIE6o/Apz0= Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA oElEQVR4nK3OsRHCMAwF0O8YQufUNIQRGIAja9CxSA55AxZgFO4coMgYrEDDQZWPIlNAjwq9 033pbOBPtbXuB6PKNBn5gZkhGa86Z4x2wE67O+06WxGD/HCOGR0deY3f9Ijwwt7rNGNf6Oac l/GuZTF1wFGKiYYHKSFAkjIo1b6sCYS1sVmFhhhahKQssRjRT90ITWUk6vvK3RsPGs+M1RuR mV+hO/VvFAAAAABJRU5ErkJggg== X-Accept-Language: fr, es, en User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) Original-Xref: usenet.stanford.edu gnu.emacs.help:206782 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:99058 Archived-At: Thorsten Jolitz writes: > Drew Adams writes: > >>> (interactive (list (read-number "Num1: ") >>> (+ (read-number "Num2: ") num1))) >>> >>> -> list: Symbol's value as variable is void: num1 >> >> Bind the value returned by the first `read-number' to a local >> variable, and use that. >> >> (interactive >> (let ((n1 (read-number "Num1: "))) >> (list n1 (+ (read-number "Num2: ") n1)))) > > That works, thanks! Indeed. Remember that the point of the interactive _declaration_, is to be able to get the argument _before_ the function is called. Therefore the parameters are not bound yet! Declaration means that it's not _executed_ in the body of the command It declares some behavior that is used before the command is called. -- __Pascal Bourguignon__ http://www.informatimago.com/ “The factory of the future will have only two employees, a man and a dog. The man will be there to feed the dog. The dog will be there to keep the man from touching the equipment.” -- Carl Bass CEO Autodesk