Book Image

Hands-On Design Patterns with C++ (Second Edition) - Second Edition

By : Fedor G. Pikus
5 (1)
Book Image

Hands-On Design Patterns with C++ (Second Edition) - Second Edition

5 (1)
By: Fedor G. Pikus

Overview of this book

C++ is a general-purpose programming language designed for efficiency, performance, and flexibility. Design patterns are commonly accepted solutions to well-recognized design problems. In essence, they are a library of reusable components, only for software architecture, and not for a concrete implementation. This book helps you focus on the design patterns that naturally adapt to your needs, and on the patterns that uniquely benefit from the features of C++. Armed with the knowledge of these patterns, you’ll spend less time searching for solutions to common problems and tackle challenges with the solutions developed from experience. You’ll also explore that design patterns are a concise and efficient way to communicate, as patterns are a familiar and recognizable solution to a specific problem and can convey a considerable amount of information with a single line of code. By the end of this book, you’ll have a deep understanding of how to use design patterns to write maintainable, robust, and reusable software.
Table of Contents (26 chapters)
1
Part 1: Getting Started with C++ Features and Concepts
5
Part 2: Common C++ Idioms
10
Part 3: C++ Design Patterns
18
Part 4: Advanced C++ Design Patterns

Chapter 9, Named Arguments, Method Chaining, and the Builder Pattern

  1. It is easy to miscount arguments, change the wrong argument, or use an argument of the wrong type that happens to convert to the parameter type. Also, adding a new parameter requires changing all function signatures that must pass these parameters along.
  2. The argument values within the aggregate have explicit names. Adding a new value does not require changing the function signatures. Classes made for different groups of arguments have different types and cannot be accidentally mixed.
  3. The named argument idiom permits the use of temporary aggregate objects. Instead of changing each data member by name, we write a method to set the value of each argument. All such methods return a reference to the object itself and can be chained together in one statement.
  4. Method cascading applies multiple methods to the same object. In a method chain, in general, each method returns a new object and the next method...