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iOS Swift Closures Functions as First Class Citizens Capturing Variables

Adrian Yeow
Adrian Yeow
13,866 Points
Posted by Adrian Yeow
Adrian Yeow
13,866 Points

returning functions

I couldn't understand this concept func printerFunction() -> (Int) -> () { }

I have understood that the printerFunction takes no parameter and the printerFunction return's type is both Int and Void. Correct me if I am wrong. How can it return both Int and Void? Is this function similar to the other function mentioned below?

func someFunction(number: Int) -> () { } which takes in parameter which is of type Int and return Void.

1 Answer

Alp Eren Can
Alp Eren Can
25,230 Points
Alp Eren Can
Alp Eren Can
25,230 Points

I gave an answer to your other question, which is similar in nature, here: https://teamtreehouse.com/forum/return-void

So, basically, printerFunction takes no parameter, true, but does not return both Int and and Void. It returns a function that takes one parameter of type Int and that returns a value of type Void.