When you transition from older C++ standards like C++11 or C++14 to the latest C++17 and C++20 it can be a tough journey. It's essential for writing clean and easy-to-maintain code, but many developers find the process challenging.

Write Modern Code with Features of C++17 and C++20

by Andreas Fertig

From the article:

Here are three common hurdles:

1. Variety of New Features

Adapting to C++17 and C++20 can be intimidating. As the latest standards offer a wide range of new features and syntax changes. One such feature is the introduction of structured bindings in C++17, which represents a shift from how variables were traditionally declared and accessed.

Old Way (C++14 and Earlier):

Before C++17, when you needed to unpack values from a pair or a tuple, you would typically do something like this:

Here, you need to use std::get<>() to access each element of the tuple, which is both verbose and less intuitive, especially when dealing with more complex data structures.