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How does Haskell support type classes? Explain their usage and benefits.



In Haskell, type classes are a powerful feature that supports ad hoc polymorphism, allowing the definition of generic functions that can operate on different types. Type classes provide a mechanism for defining a set of functions and their associated types, which can then be implemented by specific types. This enables code reuse and abstraction by promoting a high level of genericity. Usage of Type Classes: 1. Defining Type Classes: Type classes are defined using the `class` keyword followed by the class name and a list of function signatures, called methods. Each method is associated with a type signature that defines the behavior expected from instances of the type class. 2. Implementing Type Classes: To make a type an instance of a type class, it needs to provide implementations for all the methods defined by the type class. This is done using the `instance` keyword followed by the type class name and the implementations of the methods. 3. Type Class Constraints: Type classes can be used as constraints in ....

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