How Many Arguments Does It Take?

In point free style, in haskel shaskell, lets you do that. If you're doing a fold ra plus zero, ok? That's point free style. I have not named any arguments. Typically, if you're going to do a fold r, you could say, sum of the list is equal to fold r plus zero,. You're naming the list argument, but you don't have to because of currying. It relies on on good type information, a that your compiler can check.