Gain insights into software design patterns and architecture in C++. Learn about C++ idioms, concurrency patterns, and apply the right solutions to improve code quality and productivity.

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Software engineering researchers and practitioners noticed that parts of software projects could often be solved using approaches that were discovered earlier to solve similar problems. This led to the documentation of software design and architectural patterns, which are known solution approaches to a class of problems. 

This course starts by putting software patterns into perspective by answering the question, “What is a software pattern, and how is it different from an algorithm?” You will then learn about the two classes of patterns—software design and architecture patterns. Next, you’ll learn common C++ idioms. Finally, you will learn about software patterns for concurrency. 

By the end of the course, you will have useful and practical tools to improve the quality of your code and productivity. You’ll also be able to analyze a given part of your software project, pick the right pattern for the job, and apply it.

Master Software Design Patterns and Architecture in C++

# Problem statement 

You're given a `PublicClass` interface and a `PImplClass`. Your task is to define an opaque pointer in the `PublicClass` that will point to its `PImplClass` implementation class. You need to ensure that when the code in the following widget runs, it shows the following messages on the screen:
```
PublicClass::publicMethod
PublicClass::privateMethod
```


## Coding challenge
Refer to this hint if you get stumped while solving this challenge.

Test your understanding of the PImpl idiom.

Introduction

Introduction to Design Patterns

Deep Dive into Design Patterns

More Design Patterns

Idioms

Architectural Patterns

Patterns for Concurrency

Conclusion

Exercise: PImpl Idiom

Problem statement