Without parameters

Classes / Methods

With a return value
Without a return value
Without parameters
Optional parameter values
Array of parameters
External parameter names
Omitting external parameter names
Modifying parameters
Out parameters
In-out parameters
Method overloading
Class methods
Multiple return values
Consuming methods

class Greeting {
    func sayGoodby() {
        print("Goodby!")
    }
}

let greeting = Greeting()
greeting.sayGoodby()

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