In nearly every mainstream programming language, you call a function like this: f(a, b, c) But not in Haskell, where you do it like this: f a b c Of course,

In nearly every mainstream programming language, you call a function like this: f(a, b, c) But not in Haskell, where you do it like this: f a b c Of course, there is a reason for doing things this way in Haskell, namely making currying a natural part of the language. If f is a function of three variables, f a b binds values to the first two parameters, yielding a function of one variable. But it's still a change and a bit of a hurdle.