6: The Pharo Object Model — Read

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The Pharo programming model is heavily inspired by the one of Smalltalk. It is simple and uniform: everything is an object, and objects communicate only by sending each other messages. Instance variables are private to the object. Methods are all public and dynamically looked up (late-bound). In this chapter we present the core concepts of the Pharo object model. We revisit concepts such as self and super and define precisely their semantics. Then we discuss the consequences of representing classes as objects. This will be extended in Chapter: Classes and Metaclasses.

6.1: The Rules of the Model
6.2: Everything Is an Object
6.3: Every Object Is an Instance of a Class
6.4: Instance Structure and Behavior
6.5: The Instance Side and the Class Side
6.6: Every Class Has a Superclass
6.7: Everything Happens by Sending Messages
6.8: Method Lookup Follows the Inheritance Chain
6.9: Shared Variables
6.10: Internal Object Implementation Note
6.11: Chapter Summary

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