What are advanced concepts in Haskell monads?

Can you explain some advanced concepts in Haskell monads?

Sure! Advanced concepts in Haskell monads include monad transformers, the Maybe monad, and the IO monad. Would you like to dive into any specific one?

What are monad transformers and how do they work?

Monad transformers allow you to combine the functionalities of multiple monads. For example, you can stack the Maybe monad on top of the List monad to handle computations that can fail while also working with multiple values.

Can you give an example of using a monad transformer?

Certainly! Here's a simple example using the MaybeT transformer with the List monad. It allows you to work with lists of possible values that might be absent.

How do I implement a custom monad in Haskell?

To implement a custom monad in Haskell, you need to define a data type and implement the Monad type class methods: return and >>=. Would you like a code example?