I have to write a program that takes in an Integer and then uses two partial applications to first increment the number by one and then the second partial application doubles it. I know that a partial application would be one that would take less arguments than specified but each of these partial applications only needs 1 input. Does that mean I'm not passing anything into either of the partial applications? That really seems wrong/weird to me. Any help on where to start on the partial applications would be greatly appreciated
It sounds like you are supposed to use functions that take two arguments and partially apply them to arrive with the functions that take one argument. To increment a number by one using partial application, you might do something like this:
add a b = a + b
add_one = add 1
You take a function to add two numbers and partially apply it with one, so now you have a function that adds one to a number. The same principle applies to doubling.
multiply a b = a * b
double = multiply 2
The doubling function is just 2 partially applied to multiplication. To combine these, you can use function composition:
doubleIncr = multiply 2 . add 1
Hope this helps!