What are some examples of type classes in Haskell?
An example of an AI chatbot conversation about Haskell type classes and their usage.
What are some examples of type classes in Haskell?
Type classes in Haskell are a way to define functions that can operate on different types. For example, the 'Eq' type class allows for equality checks.
Can you give me a specific example of how 'Eq' works?
Sure! If you have a data type like 'data Point = Point Int Int', you can make it an instance of 'Eq' to compare two points for equality.
How do I implement the 'Eq' instance for my Point type?
You would write: instance Eq Point where { (Point x1 y1) == (Point x2 y2) = (x1 == x2) && (y1 == y2) }.
What other type classes should I know about?
Other important type classes include 'Ord' for ordering, 'Show' for string representation, and 'Functor' for mapping functions over types.
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