How to call a function within a structure and a class?

Anonymous User 2052 13 Oct 2014

I have two files: ClassA.swift and ClassB.swift

class ClassA: NSObject {
        struct StructA {
            func talk(string: String) {
                println("I say: \(string)")
            }
        }
    }
 
 
    class ClassB: NSObject {
        func makeItTalk(string: String) {
            ClassA.StructA.talk("Hello")
<--------------
        }
    }

I get the following error message

Type 'ClassA.StructA' does not conform to protocol 'StringLiteralConvertible'

Any idea why? Is it actually something than can be achieved?

2 Answers

Anonymous User 13 Oct 2014

You are using talk as static method, but it is declared as instance method. Change to:

class ClassA: NSObject {
        struct StructA {
            static func talk(string: String) {
                println("I say: \(string)")
            }
        }
    }

Anonymous User 13 Oct 2014 Accepted Answer

You are accessing StructA in a static context, whereas you need an instance of it:

class ClassB: NSObject {

func makeItTalk(string: String) {

var myStruct = ClassA.StructA()

myStruct.talk("Hello")

}

Alternatively, if your goal is to access that method statically, just declare it as a static struct method:

static func talk(string: String) {

println("I say: \(string)")

}

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How to call a function within a structure and a class?

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2 Answers