Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!1.eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed1.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.015 X-Spam-Evidence: '*H*': 0.97; '*S*': 0.00; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'modification': 0.15; 'received:80.91.229.3': 0.16; 'received:dip0.t-ipconnect.de': 0.16; 'received:plane.gmane.org': 0.16; 'received:t-ipconnect.de': 0.16; 'result[elem]': 0.16; 'subject:versus': 0.16; 'header:User- Agent:1': 0.26; 'header:X-Complaints-To:1': 0.26; 'checked': 0.31; 'url:python': 0.33; 'to:addr:python-list': 0.35; 'url:org': 0.36; 'received:org': 0.38; 'does': 0.39; 'to:addr:python.org': 0.39; 'received:de': 0.40; 'obvious': 0.72; 'url:cpython': 0.84; 'url:rev': 0.84 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Peter Otten <__peter__@web.de> Subject: Minus operator versus unary minus Date: Sat, 30 May 2015 09:56:38 +0200 Organization: None Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Gmane-NNTP-Posting-Host: p57bd893a.dip0.t-ipconnect.de User-Agent: KNode/4.13.3 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.20+ Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 14 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1432972613 news.xs4all.nl 2948 [2001:888:2000:d::a6]:34088 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:91515 The following modification of the collections.Counter implementation https://hg.python.org/cpython/rev/fe4efc0032b5 was just checked in with the line result[elem] = 0 - count Does this have an advantage over the obvious result[elem] = -count ?