July 2003
Intermediate to advanced
736 pages
16h 35m
English
Content preview from Visual Basic® .NET Power CodingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Comparing Abstract Classes to Interfaces
Before interfaces existed, abstract classes were used to solve the same kinds of problems interfaces can now solve. How Microsoft elected to invent interfaces when many programmers already used abstract classes is a conversation I was not privy to.
Interestingly enough, abstract classes and interfaces solve similar but orthogonal problems. Abstract classes allow you to define an interface with or without a partial implementation; interfaces do not allow you to provide any implementation. The fact that abstract methods and interface methods have no implementation is where they are identical. Where interfaces and abstract methods are orthogonal is where you will find abstract methods and interface methods. ...
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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.