June 2008
Intermediate to advanced
784 pages
20h 36m
English
Content preview from Programming Microsoft® Visual C#® 2008: The LanguageBecome 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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Abstract Classes
Abstract classes represent intangible entities. Object-oriented applications should model the real world, which is full of intangible concepts. For example, a geometric shape is a concept. Have you even seen a geometric shape? No. Rather, you have seen specific shapes, such as triangles, ellipses, rectangles, and lines. Geometric shape is a description of an intangible concept —a kind of shape. Conversely, a rectangle is tangible: a television, a box, and this book are actual rectangles.
The Employee class presented in this section is an abstract class. Why? Employee is not tangible. You do not hire a generic employee. Instead, you hire a specific kind of employee: an hourly, salaried, or commissioned employee. The Employee class ...
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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.