What are the differences between tuple and struct in C++17?

What are the differences between tuple and struct in C++17?

In C++17, a tuple is a fixed-size collection of heterogeneous values, while a struct is a user-defined type that can contain multiple data members.

Can you give me an example of when to use a tuple instead of a struct?

Sure! Use a tuple when you need to return multiple values from a function without defining a new type. For example, a function returning coordinates could use a tuple like std::tuple<int, int>.

What about the performance differences between them?

Structs can be more efficient in terms of memory layout and access speed, especially when they contain many members. Tuples, being more flexible, may introduce some overhead.

Are there any limitations to using tuples?

Yes, tuples have a fixed size and cannot be modified after creation. They also lack named members, which can make the code less readable compared to structs.