What is the difference between a functor and a monad in functional programming?
A functor is a type that can be mapped over, allowing you to apply a function to values inside it. A monad, on the other hand, is a more powerful abstraction that allows for chaining operations and managing side effects.
Can you give me an example of a functor?
Sure! In Haskell, the Maybe
type is a functor. You can use the fmap
function to apply a function to the value inside a Maybe
, if it exists.
What about an example of a monad?
An example of a monad is the IO
type in Haskell. It allows you to perform input/output operations while maintaining a functional programming style.
How do functors and monads relate to each other?
All monads are functors, but not all functors are monads. Monads provide additional capabilities like chaining operations, which functors do not.
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