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Justin Bane
7,850 PointsI call foul on the first question
Nowhere in the code of the video is there an example of passing functions as a parameter... and when I put code in matching the documentation you link to for passing a function as a parameter... IT STILL DOESNT CHECK OUT.
I just want to continue... can we make this question more relevant to the video we just watched?
/**
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
}
// Enter your code below
2 Answers
Chris Adamson
132,143 PointsThe challenge is looking for a function as the first parameter, so you create a parameter with the method signature, and then add 2 more parameters to be passed to it:
func mathOperation(mathOp: (Int, Int) -> Int, a: Int, b: Int) -> (Int) {
return mathOp(a, b)
}
Justin Bane
7,850 PointsGAH! ... had my parameter function set to return a function not just an INT
Jared Watkins
10,756 PointsThe example shown in the Functions as Parameters video looks like this:
func displayString(printStringFunc: (String) -> Void) {
printStringFunc("I'm a function inside another function")
}
Martin Wildfeuer
Courses Plus Student 11,071 PointsMartin Wildfeuer
Courses Plus Student 11,071 PointsThe video right before the assignment explains the concept: Functions as Parameters. Other than that, the answer below is correct :)