From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,FREEMAIL_FROM, INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,5cbfcb03a9d3d935 X-Google-Attributes: gid103376,public From: Charles Hixson Subject: Re: Help B* and B+ Trees Date: 1998/05/15 Message-ID: <355CC85E.AE8329B1@earthling.net>#1/1 X-Deja-AN: 353661785 Content-Transfer-Encoding: 7bit References: <6je5il$ecf$1@news.iinet.net.au> <355B0B39.7A3673D5@earthling.net> To: Robert Dewar Content-Type: text/plain; charset=us-ascii Organization: http://extra.newsguy.com Mime-Version: 1.0 Newsgroups: comp.lang.ada Date: 1998-05-15T00:00:00+00:00 List-Id: Yes, he explains a lot. But I kept finding that I had to drop into MIX to figure out EXACTLY what he meant, and if one is implementing a B-Tree, the EXACTLY is precisely what is wanted. Robert Dewar wrote: > > Charles says > > < this one. Warning: He uses assembly code for a pseudo-machine in his > explanations! > >> > > This is quite unfair to Don, he explains algorithms in a high level > manner using abstract pseudo-code. MIX is only used in low level analysis > of actual performance on a typical machine, i.e. to get a feel for the > constants involved and go from O(n**2) to C*n**2, you need a concrete > machine! -- Charles Hixson charleshixson@earthling.net (510) 464-7733 or chixso@mtc.dst.ca.us