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Hands-On Design Patterns with C++

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

By : Fedor G. Pikus
4.5 (11)
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Hands-On Design Patterns with C++

Hands-On Design Patterns with C++

4.5 (11)
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)
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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

Local buffer optimization beyond strings

The local buffer optimization can be used effectively for much more than just short strings. In fact, any time a small dynamic allocation of a size that is determined at runtime is needed, this optimization should be considered. In this section, we will consider several such data structures.

Small vector

Another very common data structure that often benefits from local buffer optimization is vectors. Vectors are essentially dynamic contiguous arrays of data elements of the specified type (in this sense, a string is a vector of bytes, although null termination gives strings their own specifics). A basic vector, such as std::vector found in the C++ standard library, needs two data members, a data pointer and the data size:

// Example 06
class simple_vector {
  public:
  simple_vector() = default;
  simple_vector(std::initializer_list<int> il) :
    n_(il.size()),
   ...
CONTINUE READING
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