Scala for the Impatient, 3rd Edition

Chapter 10. Traits

Topics in This Chapter L1

• 10.1 Why No Multiple Inheritance?

• 10.2 Traits as Interfaces

• 10.3 Traits with Concrete Methods

• 10.4 Traits for Rich Interfaces

• 10.5 Objects with Traits

• 10.6 Layered Traits

• 10.7 Overriding Abstract Methods in Traits

• 10.8 Concrete Fields in Traits

• 10.9 Abstract Fields in Traits

• 10.10 Trait Construction Order

• 10.11 Trait Constructors with Parameters

• 10.12 Traits Extending Classes

• 10.13 What Happens under the Hood

• 10.14 Transparent Traits L2

• 10.15 Self Types L2

• Exercises

In this chapter, you will learn how to work with traits. A class extends one or more traits in order to take advantage of the services that the traits provide. A trait may require implementing classes to support certain features. However, ...