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    Programming in Scala
    Copyright
    Dedication
    List of Figures
    List of Tables
    List of Listings
    Foreword
    Foreword to the First Edition
    Acknowledgments
    Introduction
    Chapter 1: A Scalable Language
    Chapter 2: First Steps in Scala
    Chapter 3: Next Steps in Scala
    Chapter 4: Classes and Objects
    Chapter 5: Basic Types and Operations
    Chapter 6: Functional Objects
    Chapter 7: Built-in Control Structures
    Chapter 8: Functions and Closures
    Chapter 9: Control Abstraction
    Chapter 10: Composition and Inheritance
    Chapter 11: Scala's Hierarchy
    Chapter 12: Traits
    12.1 How traits work
    12.2 Thin versus rich interfaces
    12.3 Example: Rectangular objects
    12.4 The Ordered trait
    12.5 Traits as stackable modifications
    12.6 Why not multiple inheritance?
    12.7 To trait, or not to trait?
    12.8 Conclusion
    Chapter 13: Packages and Imports
    Chapter 14: Assertions and Unit Testing
    Chapter 15: Case Classes and Pattern Matching
    Chapter 16: Working with Lists
    Chapter 17: Collections
    Chapter 18: Stateful Objects
    Chapter 19: Type Parameterization
    Chapter 20: Abstract Members
    Chapter 21: Implicit Conversions and Parameters
    Chapter 22: Implementing Lists
    Chapter 23: For Expressions Revisited
    Chapter 24: The Scala Collections API
    Chapter 25: The Architecture of Scala Collections
    Chapter 26: Extractors
    Chapter 27: Annotations
    Chapter 28: Working with XML
    Chapter 29: Modular Programming Using Objects
    Chapter 30: Object Equality
    Chapter 31: Combining Scala and Java
    Chapter 32: Actors and Concurrency
    Chapter 33: Combinator Parsing
    Chapter 34: GUI Programming
    Chapter 35: The SCells Spreadsheet
    Appendix A: Scala Scripts on Unix and Windows
    Glossary
    Bibliography
    About the Authors
    Index
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    12.8 Conclusion > 12.8 Conclusion - Pg. 236