Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Manolo =?iso-8859-1?Q?Mart=EDnez?= Newsgroups: comp.lang.python Subject: Re: Suggestion: make sequence and map interfaces more similar Date: Wed, 30 Mar 2016 12:26:45 +0200 Lines: 17 Message-ID: References: <56f8836b$0$1602$c3e8da3$5496439d@news.astraweb.com> <56FA8C71.4050306@rece.vub.ac.be> <56fb677f$0$11121$c3e8da3@news.astraweb.com> <56fba7d3$0$1616$c3e8da3$5496439d@news.astraweb.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: news.uni-berlin.de uiHx2wpmzgexkvRfzLaqdg3tMGBlA7eKAZoSWWUcLuFA== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.019 X-Spam-Evidence: '*H*': 0.96; '*S*': 0.00; 'cc:addr:python-list': 0.09; 'wed,': 0.15; '2016': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'subject:interfaces': 0.16; 'subject:make': 0.16; 'to:addr:pearwood.info': 0.16; "to:name:steven d'aprano": 0.16; 'with?': 0.16; 'wrote:': 0.16; 'cc:2**0': 0.20; 'cc:addr:python.org': 0.20; 'cc:no real name:2**0': 0.22; 'header:In-Reply-To:1': 0.24; 'header:User- Agent:1': 0.26; 'that.': 0.30; 'says': 0.32; "d'aprano": 0.33; 'doubt': 0.33; 'steven': 0.33; 'definition': 0.34; 'pm,': 0.36; 'subject:: ': 0.37; 'charset:us-ascii': 0.37; 'your': 0.60; 'subject:more': 0.61; 'no.': 0.62; 'mar': 0.65; 'received:82.223': 0.84 Content-Disposition: inline In-Reply-To: <56fba7d3$0$1616$c3e8da3$5496439d@news.astraweb.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com comp.lang.python:106045 On 03/30/16 at 09:17pm, Steven D'Aprano wrote: > On Wed, 30 Mar 2016 06:12 pm, Jussi Piitulainen wrote: > > > Steven D'Aprano writes: > > > >> Given a surjection (many-to-one mapping) > > > > No. And I doubt that Wikipedia says that. > > > No to what? What are you disagreeing with? > I think it's with your definition of surjection. Bijections are surjective, no? Manolo