Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com
Answertopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 

Ruby Programming
Previous Page Home Next Page

Your Basic, Everyday Object

Let's start by looking at an object created from a simple class. Figure 19.1 on page 239 shows an object referenced by a variable, lucille, the object's class, Guitar, and that class's superclass, Object. Notice how the object's class reference (called klass for historical reasons that really bug Andy) points to the class object, and how the super pointer from that class references the parent class.

Figure not available...

When Ruby executes Guitar.strings(), it follows the same process as before: it goes to the receiver, class Guitar, follows the klass reference to class Guitar$'$, and finds the method.

Finally, note that an ``S'' has crept into the flags in class Guitar$'$. The classes that Ruby creates automatically are marked internally as singleton classes. Singleton classes are treated slightly differently within Ruby. The most obvious difference from the outside is that they are effectively invisible: they will never appear in a list of objects returned from methods such as Module#ancestors or ObjectSpace::each_object .
Ruby Programming
Previous Page Home Next Page

 
 
  Published under the terms of the Open Publication License Design by Interspire