January 2012
Intermediate to advanced
426 pages
8h 45m
German
Content preview from C++ für Dummies, 6., vollständig überarbeitete AuflageBecome 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,
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.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.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.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.
19
Eine Klasse erben
In diesem Kapitel
Vererbung definieren
Eine Basisklasse erben
Die Basisklasse konstruieren
Wichtige Beziehungen untersuchen: die IS_A- und die HAS_A-Beziehung
Idiesem Kapitel stelle ich die Vererbung vor, also die Fähigkeit einer Klasse, Eigenschaften und Verhaltensweisen von einer anderen Klasse zu erben.
Vererbung ist ein verbreitetes Konzept. Ich bin zum Beispiel ein Mensch (außer kurz nach dem Aufstehen). Ich erbe von der Klasse Mensch verschiedene Eigenschaften, wie etwa meine Fähigkeit, mich (mehr oder weniger) intelligent zu verständigen, und meine Abhängigkeit von Luft, Wasser und kohlenhydrathaltiger Nahrung. Diese Eigenschaften sind nicht auf den Menschen beschränkt. Die Klasse Mensch erbt die Abhängigkeit von Luft, Wasser und Nahrung von der Klasse Säugetier, die sie wiederum von der Klasse Tier erbt.
Die Fähigkeit, Eigenschaften weiterzuvererben, ist sehr mächtig. Sie ermöglicht uns, Dinge auf ökonomische Weise zu beschreiben. Wenn mein Sohn zum Beispiel fragt: »Was ist eine Ente?«, dann kann ich sagen: »Eine Ente ist ein Vogel, der quakt.« Egal, ...
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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.