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Hands-On Design Patterns with Delphi

You're reading from   Hands-On Design Patterns with Delphi Build applications using idiomatic, extensible, and concurrent design patterns in Delphi

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Product type Paperback
Published in Feb 2019
Publisher Packt
ISBN-13 9781789343243
Length 476 pages
Edition 1st Edition
Languages
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Author (1):
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Primož Gabrijelčič Primož Gabrijelčič
Author Profile Icon Primož Gabrijelčič
Primož Gabrijelčič
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Toc

Table of Contents (19) Chapters Close

Preface 1. Section 1: Design Pattern Essentials FREE CHAPTER
2. Introduction to patterns 3. Section 2: Creational Patterns
4. Singleton, Dependency Injection, Lazy Initialization, and Object Pool 5. Factory Method, Abstract Factory, Prototype, and Builder 6. Section 3: Structural Patterns
7. Composite, Flyweight, Marker Interface, and Bridge 8. Adapter, Proxy, Decorator, and Facade 9. Section 4: Behavioral Patterns
10. Nullable Value, Template Method, Command, and State 11. Iterator, Visitor, Observer, and Memento 12. Section 5: Concurrency Patterns
13. Locking patterns 14. Thread pool, Messaging, Future and Pipeline 15. Section 6: Miscellaneous Patterns
16. Designing Delphi Programs 17. Other Kinds of Patterns 18. Other Books You May Enjoy

Criticism

While design patterns are undoubtedly a useful tool, many prominent computer scientists have expressed criticism directed both at the Design Patterns: Elements of Reusable Object-Oriented Software book and at the general way patterns are used in practice.

Over the years, programmers have learned that the patterns in the GoF book really aren't as widely applicable as the authors thought. Lots of them only apply to the object-oriented world. If we try to use them with a functional language, they are largely useless. They can also be greatly simplified when used in aspect-oriented languages.

Delphi, however, is an object-oriented language, so we can reuse most of the Gang of Four observations. Still, it is important to keep in mind how patterns should be used in practice.

As a main rule, you should never use design patterns to architect the software. Design patterns...

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