1.1. An Introduction to Object Orientation
Before talking about Ruby specifically, it is a good idea to talk about object-oriented programming in the abstract. These first few pages review those concepts with only cursory references to Ruby before we proceed to a review of the Ruby language itself.
1.1.1. What Is an Object?
In object-oriented programming, the fundamental unit is the object. An object is an entity that serves as a container for data and also controls access to the data. Associated with an object is a set of attributes, which are essentially no more than variables belonging to the object. (In this book, we will loosely use the ordinary term variable for an attribute.) Also associated with an object is a set of functions that provide ...
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