From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Turner Subject: Re: [PATCH v4 2/4] path: optimize common dir checking Date: Wed, 26 Aug 2015 18:19:05 -0400 Organization: Twitter Message-ID: <1440627545.26055.8.camel@twopensource.com> References: <1440618365-20628-1-git-send-email-dturner@twopensource.com> <1440618365-20628-3-git-send-email-dturner@twopensource.com> <1440627031.26055.5.camel@twopensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: git@vger.kernel.org, mhagger@alum.mit.edu, pclouds@gmail.com, sunshine@sunshineco.com To: Junio C Hamano X-From: git-owner@vger.kernel.org Thu Aug 27 00:19:13 2015 Return-path: Envelope-to: gcvg-git-2@plane.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZUj2H-0000Y9-CB for gcvg-git-2@plane.gmane.org; Thu, 27 Aug 2015 00:19:13 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752567AbbHZWTI (ORCPT ); Wed, 26 Aug 2015 18:19:08 -0400 Received: from mail-qg0-f42.google.com ([209.85.192.42]:35209 "EHLO mail-qg0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751949AbbHZWTH (ORCPT ); Wed, 26 Aug 2015 18:19:07 -0400 Received: by qgj62 with SMTP id 62so910619qgj.2 for ; Wed, 26 Aug 2015 15:19:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:organization:content-type:mime-version :content-transfer-encoding; bh=cu46uRUdaioRNFg1Mfy/iBrhfyUkea9XlCab8pRDgo8=; b=YytvJd+86IGKKUfMFzublXHA4/eoYg4SC7lMdjmhPNjDkwejso6JPF0URYAew0QwkB 5LD65tNz3ymInvwuI82QKi0qPKbW74T0RbWntCWT2rJrcy4maZQ722VBUkX5RaePXiYM jAy3qmhz1aL62dOp9m5aofP80mhINEUkwUpL/QK3YpJkZPkhHGiMckKbrAOJwH3/idlX C5AaE5JmMxamdny6gx6OBHM3wzU6HSXrbt+uJpPW734D8sJFOSmrssJX6GH7j9yNJB8/ 3Y9dyy853LzXOatbyR9fqJWwnYUPz9pFgvVpmNOIRH4zopJ2FYtByiyQon3RVRAoGrL9 YVYQ== X-Gm-Message-State: ALoCoQn/SxKbAbRiYVUvzDByi7vuRP23DCXsCQ9HhRPAGuSXqr/wFKDKNxcd9/mb1rlvuy14ZpTs X-Received: by 10.140.146.214 with SMTP id 205mr1535903qhs.71.1440627546736; Wed, 26 Aug 2015 15:19:06 -0700 (PDT) Received: from ubuntu ([192.133.79.145]) by smtp.gmail.com with ESMTPSA id e19sm65876qhc.18.2015.08.26.15.19.05 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 26 Aug 2015 15:19:05 -0700 (PDT) In-Reply-To: <1440627031.26055.5.camel@twopensource.com> X-Mailer: Evolution 3.12.11-0ubuntu3 Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: On Wed, 2015-08-26 at 18:10 -0400, David Turner wrote: > On Wed, 2015-08-26 at 14:15 -0700, Junio C Hamano wrote: > > > + * For example, consider the following set of strings: > > > + * abc > > > + * def > > > + * definite > > > + * definition > > > + * > > > + * The trie would look look like: > > > + * root: len = 0, value = (something), children a and d non-NULL. > > > > "value = NULL", as there is no empty string registered in the trie? > > Indeed. > > > > + * a: len = 2, contents = bc > > > > "value = NULL" here, too (just showing I am following along, not > > just skimming)? > > Yep. No, wait. value should be non-NULL, since abc is in the string set.