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iOS Swift Closures Functions as First Class Citizens Higher Order Functions

Posted by mark gilchrist
mark gilchrist
Courses Plus Student 33,169 Points

code works in playground but not Treehouse

I have the below code working in a playground but I keep getting errors when I run it via the website

func mathOperation(myfunction:(Int, Int) -> (Int), a:Int , b:Int) ->(Int) { return myfunction(a,b) }

then when I place the following code in the second part of the challenge

let difference = mathOperation(differenceBetweenNumbers,a: 3,b: 2)

I get an error message saying "Make sure your function is named mathOperation and check your parameters and return type!" . however I get no errors in xcode v. 7.2, swift 2.1.1

Marina Alenskaja
Marina Alenskaja
9,320 Points
Marina Alenskaja
Marina Alenskaja
9,320 Points

Hi

You didn't post your code :-)

1 Answer

Justin Reed
seal-mask
.a{fill-rule:evenodd;}techdegree
Justin Reed
Full Stack JavaScript Techdegree Student 33,918 Points
Justin Reed
.a{fill-rule:evenodd;}techdegree
Justin Reed
Full Stack JavaScript Techdegree Student 33,918 Points

Hello Mark,

Throw that code up and we can give you a better idea, but when I went through the course I know I had code a few times that worked in a playground but wasnt exactly the way treehouse did it and the code wouldnt work. So it is definitely possible to have working code in a playground that isnt accepted by treehouse. Good luck!

Kind regards,

Justin