What is std::variant?
A variant is a data type introduced in C++ 17 that can hold values of different types, much like a union in C. However, std::variant brings type safety to the table, making it a safer and more versatile alternative.
How Does std::Variant Work?
At its core, std::variant is a union of types. It can store one value at a time from a predefined set of types. Unlike a traditional union, std::variant keeps track of its active type, ensuring that you access the correct value.
Types Supported by std::Variant
std::variant can hold values of various data types, including fundamental types (int, double, etc.), user-defined types (custom classes or structs), and even other variants. This flexibility opens up a world of possibilities for handling complex data scenarios.
std::variant in C++ 17
In the world of modern C++ programming, the std::variant is a powerful tool that allows you to work with multiple data types in a flexible and type-safe manner. In this article, we will discuss std::variant and explore its fundamentals, applications, and benefits with practical code examples.
Prerequisites: C++ data types, functions, unions, and classes.