Intro provides a short overview of what refactoring with std::variant and std::optional means.

💡 Did you know?
std::variant and std::optional are called “vocabulary” types because you can leverage them to convey more design information.

Your code can be much more compact and more expressive.

This chapter will show you one example of how std::optional and std::variant can help with the refactoring of one functi​on. We’ll start with some legacy code, and through several steps, we’ll arrive with a much better solution. To give you a better understanding you’ll see the pros and cons of each step.

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