G'day... Firstly ***thanks*** to everyone who has been helping me with this.... Really appreciated...
Now, for friendly arguments sake... > > I'm wanting to write a method in an abstract class that must be > > overriden by it's children. If it is called directly (i.e. without > > being overriden) then it registers an error, but if its > called via an > > overriding method then do some common functionality. > > That's not an abstract class. Huh? I thought that was the definition of an abstract class... :) According to: http://developer.apple.com/techpubs/macosx/Cocoa/ObjectiveC/7objc_glossa ry/chapter_9_section_1.html "A class that's defined solely so that other classes can inherit from it. Programs don't use instances of an abstract class, only of its subclasses." ... and to: http://www.gwydiondylan.org/drm/drm_126.htm "A class that cannot have direct instances. The opposite of an abstract class is a concrete class." ... and to: http://mcs.open.ac.uk/computing/html/new_courses/m301/glossary.htm "[M206] A class that is not intended to have instances. An abstract class is used to define a minimum message protocol for all its subclasses. If the abstract class can implement the method directly then it does so and the code is inherited by the subclasses. If it cannot implement a working method (because the subclasses must implement the method differently) then it defines a dummy method that raises an exception if it is invoked, thus forcing all subclasses to over-ride the method. This is a class which is never used to create objects, rather it is used to specify the minimum set of messages to which any subclass (of the abstract class) can respond, that is to say an abstract class describes the common characteristics of its subclasses." ... is there something I'm missing... :) But the help you've provided is excellent - thanks I appreciate it...! :) Regards, Michael S. E. Kraus Software Developer Wild Technology Pty Ltd _______________________________ ABN 98 091 470 692 Level 4 Tiara, 306/9 Crystal Street, Waterloo NSW 2017, Australia Telephone 1300-13-9453 | Facsimile 1300-88-9453 http://www.wildtechnology.net The information contained in this email message and any attachments may be confidential information and may also be the subject of client legal - legal professional privilege. If you are not the intended recipient, any use, interference with, disclosure or copying of this material is unauthorised and prohibited. This email and any attachments are also subject to copyright. No part of them may be reproduced, adapted or transmitted without the written permission of the copyright owner. If you have received this email in error, please immediately advise the sender by return email and delete the message from your system. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
