From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.devel Subject: Re: streams are cool, you could stream virtually anything! Date: Thu, 05 Nov 2015 00:34:20 +0100 Message-ID: <8737wl9w5f.fsf@web.de> References: <87ziyuaqhl.fsf@petton.fr> <87fv0labbf.fsf@web.de> <87y4eda0kl.fsf@petton.fr> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1446680086 23937 80.91.229.3 (4 Nov 2015 23:34:46 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 4 Nov 2015 23:34:46 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Nov 05 00:34:38 2015 Return-path: Envelope-to: ged-emacs-devel@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 1Zu7Zc-0005mF-Fm for ged-emacs-devel@m.gmane.org; Thu, 05 Nov 2015 00:34:36 +0100 Original-Received: from localhost ([::1]:57671 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zu7Zb-0008Gw-Pt for ged-emacs-devel@m.gmane.org; Wed, 04 Nov 2015 18:34:35 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:58177) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zu7ZY-0008Gn-Bi for emacs-devel@gnu.org; Wed, 04 Nov 2015 18:34:33 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zu7ZU-0000oy-Rf for emacs-devel@gnu.org; Wed, 04 Nov 2015 18:34:32 -0500 Original-Received: from plane.gmane.org ([80.91.229.3]:58012) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zu7ZU-0000ou-Kf for emacs-devel@gnu.org; Wed, 04 Nov 2015 18:34:28 -0500 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1Zu7ZT-0005cw-Ni for emacs-devel@gnu.org; Thu, 05 Nov 2015 00:34:27 +0100 Original-Received: from ip-90-186-2-4.web.vodafone.de ([90.186.2.4]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 05 Nov 2015 00:34:27 +0100 Original-Received: from michael_heerdegen by ip-90-186-2-4.web.vodafone.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 05 Nov 2015 00:34:27 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 17 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: ip-90-186-2-4.web.vodafone.de User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) Cancel-Lock: sha1:oTTzzeAwVEyXhXUWccg2rWQB2xs= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:193250 Archived-At: Nicolas Petton writes: > Indeed! Could I by any chance get another pull request from you on > GitHub? Of course. Are you ok when `stream-pop' would raise a (newly defined) error when called on an empty stream? The problem is how one can notice when a stream has run out of elements when calling `stream-pop'. We could either just return nil (bad, because the stream could also generate nil if non-empty), return a dedicated flag (like an uninterned symbol that is internal to stream.el), or just signal a dedicated error that the programmer has to catch. I vote for the third alternative. Michael.