Re: Abstract classes and methods
Re: Abstract classes and methods
- Subject: Re: Abstract classes and methods
- From: stuartbryson <email@hidden>
- Date: Thu, 30 Aug 2001 22:55:48 +1000
I find it quite amusing that this is the exact example that I need it
for (except that I am working in 3D rather than 2D). I have a 3DObject
and then Sphere and Cube both inherit from 3DObject. I do not want
anyone (me) to be able to instantiate 3d object. It is easy to say
"Please don't instantiate 3DObject" to those who might use my code, but
if I could force it like in C++ this would ensure the quality of the
program etc etc.
Stuart
On Wednesday, August 29, 2001, at 10:11 PM, Smith, Bradley wrote:
Okay, classic OO example. I have an abstract class called Shape.
Shape is meaningless on its own but if you subclass it e.g. Square,
Circle
etc. then those classes can be used. What you don't want to do is let
anyone
using your classes instantiate an instance of class Shape directly.
Brad
If you describe a situation which would be impossible or at
least quite
inconvenient to solve without abstract classes -- I am not
aware of any such
-- I'll do my best to answer.
---
Ondra Cada
OCSoftware: email@hidden http://www.ocs.cz
private email@hidden http://www.ocs.cz/oc
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