Normally we write function and it seems like below:
def multiplySimple(a: Int, b: Int): Int = a * b
We declare a function with all the arguments needed inside a single parameter list.
In currying however, we can split this parameter list into multiple parameter lists.
def multiplyCurry(a: Int)(b: Int): Int = a * b
This doesn’t seem like much, but it does lead to partial application of functions and is one method for how we can have multiple inputs in a functional programming language when mathematical functions allow one input.