What are some use cases for the Either type in Haskell?

What are some use cases for the Either type in Haskell?

The Either type in Haskell is commonly used for error handling and representing computations that can fail. It allows you to return a value or an error without using exceptions.

Can you give me an example of how to use Either in a function?

Sure! Here's a simple example: you can create a function that parses an integer from a string. If the parsing fails, it returns an error message using the Left constructor, otherwise it returns the parsed integer using the Right constructor.

What are the advantages of using Either over Maybe?

Using Either allows you to provide more context about the error since it can carry an error message, while Maybe only indicates success or failure without additional information.

Are there any libraries that enhance the use of Either in Haskell?

Yes, libraries like 'either' and 'transformers' provide additional functions and utilities to work with Either, making it easier to handle complex scenarios.