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Harold Davis
Courses Plus Student 14,604 PointsUsing the differenceBetweenNumbers function as an input to mathOperation, compute the difference between any two integer
Im stuck on this one I'm so embarrassed i know its simple but I'm just not getting it.
Using the differenceBetweenNumbers function as an input to mathOperation, compute the difference between any two integers and assign the result to a constant named difference.
any tips or hints as to how i can pass this func through the other together?(note i have passed functions through functions before, but this function is just weird to me.)
/**
For this code challenge, let’s define a math operation as a function that
carries out some work on two integers and returns an integer as well. An
example is the function below, `differenceBetweenNumbers`, which takes two
integers and calculates the difference between the numbers. After calculating,
it returns the difference.
*/
func differenceBetweenNumbers(a: Int, b:Int) -> (Int) {
return a - b
}
func mathOperation(mathOp: (Int, Int) -> Int, _ a: Int, _ b:Int) -> (Int) {
return mathOp(a, b)
}
// Enter your code below
1 Answer
Cindy Lea
Courses Plus Student 6,497 PointsFor part 1 of the challenge its something like this:
func differenceBetweenNumbers(a: Int, b:Int) -> (Int) { return a - b }
// Enter your code below func mathOperation(mathOp: (Int, Int) -> Int, a: Int, b: Int) -> Int { return mathOp(a, b) }
Harold Davis
Courses Plus Student 14,604 PointsThank you I'm on the second part though sorry i should have clarified
Reed Carson
8,306 PointsReed Carson
8,306 Pointslet difference = mathOperation(differenceBetweenNumbers, a: 20, b: 20)this is correct but the challenge wont take it. I also tried assigning differenceBetweenNumbers itself to a constant, and passing that constant in, but that wasnt acceptable as well. I tried rewriting the order of the parameters, and playing with parentheses but even though it satisfies the first part of the challenge, it doesnt like the second part. not sure whats going on