3.4 Summary

In this chapter, we covered the following:

• A generic function can contain more than one method, where each method has parameters of different types, and thus is intended for different arguments. The say-greeting generic function has two methods.

• Dylan provides built-in classes, including <integer>, <single-float>, <string>, and <object>. These classes are related by inheritance.

• In Dylan, almost everything is an object. Each object has a unique identity.

• The = predicate tests for similarity; the == predicate tests for identity.

• A binding is an association between an object and a name.