What are the differences between Haskell type classes and interfaces?

What are the differences between Haskell type classes and interfaces?

Haskell type classes are a way to define a set of functions that can operate on different types, while interfaces in languages like Java define a contract that classes must follow. Type classes allow for ad-hoc polymorphism, whereas interfaces provide a more rigid structure.

Can you give an example of a type class in Haskell?

Sure! A common example is the Eq type class, which defines the == and /= functions for checking equality. Any type that wants to support equality must implement these functions.

How do type classes handle multiple implementations?

Type classes can have multiple instances for different types. For example, both Int and Char can be instances of the Eq type class, each with their own implementation of equality.

Are there any limitations to using type classes?

Yes, one limitation is that type classes can lead to ambiguity if multiple instances are applicable. Additionally, they can complicate type inference in some cases.