How to Initialize Data Members in C++ From C++11 untill C++20.png

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cpp20

Throughout this course, you will learn all the options to initialize data members in C++ using a simpler syntax and safer code. More specifically, in this mini course you will learn non-static data member initialization, inline variables, designated initializers, and more. Additionally, you’ll see the changes and new techniques from C++11 to C++20 to really round out your understanding.

Initializing Data Members: From C++11 till C++20

# Summary

In this course, we covered how Modern C++ simplified the initialization of data members.

First, we took a quick glance at constructors to see their different versions and how to streamline code with inherited or delegating constructors from C++11.

Later, we progressed to another valuable feature from C++11, non-static data member initialization, NSDMI. You can now declare a member variable **and initialize it** with a default value. The initialization will happen before each constructor body is called in the constructor initialization list.

NSDMI improved with C++14 (aggregates) and in C++20 (bit fields are now supported).

Furthermore, in C++17, we got **inline variables**, which means you can declare and initialize a static member without having to do that in a corresponding CPP file.

At the end of the course, we also looked at the latest features from C++20, designated initializers. This new type of initialization can make code more readable and reduce confusion when creating aggregate types with many data members.

Here's a "summary" example that combines the features: 

Let's review all of the knowledge from all lessons.

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Summary of Class Data Members

Summary