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

tarball.tar.gz

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

# Advantages of NSDMI

It looks like using NSDMI is a clear winner for Modern C++. Here are the main reasons why is it so helpful:

* It's easy to write.
* You can be sure that each member is initialized correctly.  
  * The declaration and the default value are in the same place, so it's easier to maintain.
  * This also conforms with the rule that every variable should be initialized.
* It is especially useful when we have several constructors.  
  * Previously, we would have to duplicate the initialization code for members or write a custom method, like `InitMembers()`, that would be called in the constructors.
  * Now, you can do a default initialization, and the constructors will only do their specific jobs.

Let's summarize non-static data member initialization.

__default

NSDMI: Advantages and Disadvantages

Advantages of NSDMI