What are higher-kinded types in Scala?

What are higher-kinded types in Scala?

Higher-kinded types in Scala are types that take other types as parameters. They allow for more abstract and flexible programming.

Can you give me an example of a higher-kinded type?

Sure! An example is the Functor type class, which can be defined as trait Functor[F[_]] { def map[A, B](fa: F[A])(f: A => B): F[B] }. Here, F is a higher-kinded type.

How do higher-kinded types improve code reusability?

They allow you to write generic code that can operate on a variety of types, making your code more modular and reusable.

Are there any limitations to using higher-kinded types?

Yes, they can make type inference more complex and may lead to more complicated type errors, which can be challenging to debug.