Passing a value into a class to be used when the class is instantiated in Swift -


when creating instance of custom class, want pass value class declaration, used when it's instantiated.

i tried doing through property, doesn't work. correct way achieve this?

(apologies if i'm not wording question quite right, code below makes question clear.)

class hello {     let indexinarray: int!     override init(frame: cgrect) {         super.init(frame: frame)         println("this hello number \(indexinarray).")     } }  index in 0..<4 {     let singlehello = hello()     singlehello.indexinarray = index }

the desired output:

// hello number 0. // hello number 1. // hello number 2. // hello number 3.

if understand question correctly, you're after:

class hello : hellosuperclass {     // note - no longer has declared implicitly unwrapped optional.     let index: int      // create new designated initialiser takes frame , index arguments.     init(frame: cgrect, index: int) {         self.index = index         super.init(frame: frame)         println("this hello number \(self.index).")     } }  in 0..<4 {     let singlehello = hello(frame: cgrect(), index: i) }

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