Path: csiph.com!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail From: Jussi Piitulainen Newsgroups: comp.lang.python Subject: Re: Suggestion: make sequence and map interfaces more similar Date: Wed, 30 Mar 2016 13:57:51 +0300 Organization: A noiseless patient Spider Lines: 19 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 Injection-Info: mx02.eternal-september.org; posting-host="305c68510616a2e7ac08bcd2ff1598bd"; logging-data="20905"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+wU2PdEKKv34wBEBmxm4jyHE2AxaU+BMw=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) Cancel-Lock: sha1:mP4bro+q43oPOLEkhLSrAbiCke8= sha1:OK66D9SfLbQFmZvjo9SafA9sdzY= Xref: csiph.com comp.lang.python:106049 Antoon Pardon writes: > Op 30-03-16 om 12:28 schreef Jussi Piitulainen: >> Steven D'Aprano writes: >> >>> 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? >> Surjection does not mean many-to-one mapping. It means something else. > > I think this is my fault. I used "surjective function" wrongly in > my first response. Thanks. I missed that. Now I at least see why Steven may have brought the concept up at all - it doesn't seem relevant, either.