What are the differences between C++20 templates and inheritance?

What are the main differences between C++20 templates and inheritance?

C++20 templates allow for generic programming, enabling code reuse without the need for a base class, while inheritance is about creating a hierarchy of classes.

Can you give an example of when to use templates instead of inheritance?

Sure! Use templates when you want to create a function or class that works with any data type, like a generic container. Inheritance is better for creating a specialized version of a class.

What are the advantages of using templates over inheritance?

Templates provide type safety at compile time, reduce code duplication, and can lead to better performance due to inlining. Inheritance can introduce complexity and runtime overhead.

Are there any downsides to using templates?

Yes, templates can lead to code bloat due to multiple instantiations and can make error messages more complex and harder to understand.

How does C++20 improve templates compared to earlier versions?

C++20 introduces concepts, which allow for better constraints on template parameters, making templates easier to use and understand.