January 2020
Intermediate to advanced
454 pages
11h 25m
English
Content preview from Advanced C++ Programming Cookbook
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How it works...
To best explain how C++20 Concepts will aid in template programming, we will start with a simple example of programming an interface in C++ today. Interfaces define a contract between the implementation of an Application Programming Interface (API) and the user of the API and are heavily used in object-oriented programming to abstract away the interface of an API from its implementation details.
Let's start with the following pure virtual interface:
class interface{public: virtual ~interface() = default; virtual void foo() = 0;};
The preceding pure virtual interface in C++ defines a foo() function. Clients of this API do not need to know how foo() is implemented. All they care about is the definition of the interface and the ...
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