What are the differences between Maybe and Either in Haskell?
An example of an AI chatbot conversation about Haskell's Maybe and Either types.
What are the differences between Maybe and Either in Haskell?
In Haskell, Maybe is used to represent a value that may or may not exist, while Either is used to represent a value that can be one of two types, typically for error handling.
Can you give me an example of how to use Maybe?
Sure! Here's a simple example: data Maybe a = Nothing | Just a. You can use Just to wrap a value or Nothing to indicate absence.
And how about Either? What does it look like?
Either is defined as data Either a b = Left a | Right b. You typically use Left for an error and Right for a successful value.
When should I use Maybe over Either?
Use Maybe when you want to represent optional values without additional context, and use Either when you need to convey error information.
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