Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!usenet.blueworldhosting.com!feeder01.blueworldhosting.com!news.ripco.com!feeder.erje.net!eu.feeder.erje.net!weretis.net!feeder1.news.weretis.net!news.solani.org!.POSTED!not-for-mail From: Thomas 'PointedEars' Lahn Newsgroups: comp.lang.javascript Subject: Re: Difference between two arrays Date: Tue, 27 May 2014 17:49:31 +0200 Organization: PointedEars Software (PES) Lines: 15 Message-ID: <1663297.SaG1l8Cfyc@PointedEars.de> References: <0.e9255226716292b2ac8f.20140527134102BST.87lhtne6n5.fsf@bsb.me.uk> Reply-To: Thomas 'PointedEars' Lahn Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8Bit X-Trace: solani.org 1401205772 22473 eJwFwQkBwDAIA0BL5UkKcoAV/xJ2B6NwrhN0LFYDqUUVJkX38PCVnmrCvu6cymch4hlddecH/skQmQ== (27 May 2014 15:49:32 GMT) X-Complaints-To: abuse@news.solani.org NNTP-Posting-Date: Tue, 27 May 2014 15:49:32 +0000 (UTC) User-Agent: KNode/4.12.4 X-User-ID: eJwFwQkRwEAIBDBL7ABbkHN8/iU0cSXYn9Fpfn7xxuZKp3ssGfSmuIyGIGBpul18MEGtYtlR45cKx2bvD1oeFZA= Cancel-Lock: sha1:H+9HlkjffJqDTzthH8QAnPM/JXE= X-NNTP-Posting-Host: eJwFwQEBACAIA7BKcjhKHEXfP4IbPS17RjKDopw3Wnr9oGVQwaJRg7iHPltj78JtHDs1V3wqjRFe Xref: csiph.com comp.lang.javascript:24442 Ben Bacarisse wrote: > var count = []; > this.forEach(function (e) { count[e] = 1; }); Using “true” instead of “1” is recommended, as that will save 63 bits per item in the best case. PointedEars -- PointedEars FAQ: | SVN: Twitter: @PointedEars2 | ES Matrix: Please do not Cc: me. / Bitte keine Kopien per E-Mail.