<s>[INST] What is monad in functional programming?
Can you show me example of implementation of monad in Haskell? [/INST] A monad is a type with a function that creates that type, and a function that produces a new computation for values of that type.
Here is an example implementation of a monad `m` in Haskell:
```haskell
-- type constructor for the monad
data m a = ...
-- embed the input value in the monad `m`
return :: a -> m a
-- bind function that returns a computation to combine `a` and `m b` into `m b`
(>>=) :: m a -> (a -> m b) -> m b
```</s>\ <s>[INST] Why actually should I care about monads? [/INST] Monads are a key concept in functional programming and are used to represent computations that can be composed in a clear and predictable way. They provide a way to abstract away low-level details such as handling null values, error handling, and resource management, allowing you to write code that is more readable and maintainable. Monads are widely used in functional programming languages such as Haskell, Scala, and others, and can be applied to solve a variety of programming problems. By understanding monads, you can write cleaner, more concise code that is easier to reason about and debug, which can make you a more effective functional programmer.</s>