X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com X-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=aUlu/z4k17HnAUjQ0ELpZEE7wLnLkRGUT4UoIb04Xko=; b=sST/yi//KzVzrDStI0OJpadGaEdTqd+6BLGGIjQJEKSjV8qvriADcMKFxBZXxHTM6L xbPtMjpsRPABzQ0osM5k7LQ/lB43DtaQF9xnmMxUFOhIIfVSw5bA0CL5wiA+xUQH6U+j jl7pk6b3TkDHiueC0v3Q5vBzsGCLzb//yv1ESE6cAFyB1UspUHI9y2O209FZzj198H1a XFr8Tpcsxa/qOsnXpRAKLcQZjIKECnOzEaWZv71wLE6CP+aehFzm9igWosqNtii37ld4 rq9uq30Ih7GVHol177NBQo4YgZSAK/782LcP3jWEHxAqfVvKlbJtBRYAvY6Byikop2qV lJKQ== MIME-Version: 1.0 X-Received: by 10.112.62.133 with SMTP id y5mr24576434lbr.120.1440536530513; Tue, 25 Aug 2015 14:02:10 -0700 (PDT) In-Reply-To: <20150825203732.12446.qmail@stuge.se> References: <20150824223846 DOT 0ba61ba7 AT jive DOT levalinux DOT org> <55DBA2B7 DOT 1080501 AT ecosensory DOT com> <55DC31E0 DOT 9050606 AT jump-ing DOT de> <20150825203732 DOT 12446 DOT qmail AT stuge DOT se> Date: Tue, 25 Aug 2015 17:02:10 -0400 Message-ID: Subject: Re: [geda-user] pcb file format From: "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" To: geda-user AT delorie DOT com Content-Type: text/plain; charset=UTF-8 Reply-To: geda-user AT delorie DOT com Errors-To: nobody AT delorie DOT com X-Mailing-List: geda-user AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk On Tue, Aug 25, 2015 at 4:37 PM, Peter Stuge (peter AT stuge DOT se) [via geda-user AT delorie DOT com] wrote: > Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com] wrote: >> The problem that has been consuming my mind or a few months now is >> how all of this should be represented in memory. > > Linked lists. The overhead is small. Yes but you want the lists to be meaningful. Just having a list of elements on a layer is not enough. The way you store the info makes moving footprints or moving traces more straight forward to implement. > //Peter -- Home http://evanfoss.googlepages.com/ Work http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/