What are the differences between various Haskell monads?

Can you explain the differences between Maybe, Either, and IO monads in Haskell?

Sure! The Maybe monad is used for computations that might fail, returning Nothing or Just value. Either is similar but allows for error messages, providing more context on failure. The IO monad handles input/output operations, encapsulating side effects.

How do I choose which monad to use in my Haskell program?

It depends on your needs. Use Maybe for optional values, Either for error handling, and IO for side effects. Consider the context of your computations.

Can you give an example of using the Maybe monad?

Certainly! Here's a simple example: safeDivide x y = if y == 0 then Nothing else Just (x / y). This function returns Nothing if the divisor is zero.

What about combining monads? How does that work?

You can use the >>= operator to chain computations. For example, you can combine Maybe and IO monads using do notation to handle optional values in IO actions.