> -----Original Message----- > From: Nathan Rixham [mailto:nrixham@xxxxxxxxx] > Sent: Tuesday, February 19, 2008 5:17 AM > To: php-general@xxxxxxxxxxxxx > Subject: Re: More than one values returned? > > Robert Cummings wrote: > > On Mon, 2008-02-18 at 21:09 -0600, Larry Garfield wrote: > >> On Monday 18 February 2008, Nick Stinemates wrote: > >> > >>>>> I have found, however, that if I ever need to return /multiple/ > values, > >>>>> it's usually because of bad design and/or the lack of proper > >>>>> encapsulation. > >>>> You mean you've never had a function like getCoordinates()? Or > >>>> getUsers(), or any other of a zillion perfectly valid and reasonable > >>>> functions that return multiple values as an array? Wow, how odd! > >>>> > >>>> Cheers, > >>>> Rob. > >>> getCoordinates() would return a Point object > >>> getUsers() would return a Group object... > >>> > >>> Not rocket science ;) > >> I wouldn't consider an array of user objects to be "multiple things". I > >> consider it a single aggregate thing, and return arrays all the time. > That's > >> conceptually different from wanting two separate return values from a > >> function, which is indeed conceptually icky. > > > > Yes, an aggregate is comprised of multiple things usually. Hence when > > decomposing the concept you are indeed returning multiple values-- both > > points of view are valid. If you receive a parcel of 100 pens. I can > > say, "has the parcel arrived yet" (one entity) or "have the pens arrived > > yet" (multiple entities). > > > > At any rate, the O.P. wanted to return multiple values called $x and $y. > > It seems quite reasonable to assume he was returning something akin to > > coordinates but didn't know how to do so by binding them in an > > aggregating structure such as an array, or if you wish, an object. > > > > Cheers, > > Rob. > > seriously, whats wrong with returning an array? half the standard php > functions return array's, therefore at least half of php has been > designed badly..? > > ps: when working with co-ordinates / GIS data you should really be using > wkb data instead, it's much faster. [unpack] > So returning multiple values is a bad thing? How about Matlab for which it is such a common thing to use multiple return values, and they even have names? function [x, y] = myvectorfun(A, t) x = A*cos(t); y = A*sin(t); end Regards, Rob Andrés Robinet | Lead Developer | BESTPLACE CORPORATION 5100 Bayview Drive 206, Royal Lauderdale Landings, Fort Lauderdale, FL 33308 | TEL 954-607-4207 | FAX 954-337-2695 | Email: info@xxxxxxxxxxxxx | MSN Chat: best@xxxxxxxxxxxxx | SKYPE: bestplace | Web: bestplace.biz | Web: seo-diy.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
