Haskell got a nice system of classes. Though the name reminds us of the OOP term, these “classes” are very different in their use. Here is an example for people who are not familiar with Haskell classes: Ideally, our F# code would look like: Without editi[...]

If you have any experience in Haskell, you know the IO monad. Some people think it just makes things ugly – but I think it is good, since we are functional programming and we should know when we are using an impure function. What we will do is to define a[...]