That's the style that functional programmers prefer. It makes it slightly easier to work with as you can now pass them together as one. Most OOP dependency injection is done through interfaces, but with the functional approach where you have functions as first class citizens you can just pass functions around. And as the best interface is a one function interface, that's the ideal way to do it.

The point being, essentially they are the same thing, they hold the same power, and it's just a stylistic difference.