May 2010
Intermediate to advanced
1272 pages
61h 18m
English
Content preview from Visual Basic® 2010 Unleashed
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MustInherit and MustOverride Keywords
Inheritance is straightforward because it enables building custom objects’ frameworks. In this context, an object can represent the base infrastructure for different kinds of classes. We saw how the Person class is the base infrastructure for the Customer, Employee, and Contact derived classes. Because of its implementation, the Person class does nothing special. It has a generic behavior, and you will probably never create instances of that class, whereas it is more likely that you will create instances of its derived classes. In this scenario, therefore, when you have a general purpose base class that acts just as a basic infrastructure for derived classes, you can force a class to be inherited so that ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.