Functional Programming: A PragPub Anthology

Calling on Methods

When encapsulated in a class (or struct or enum), the first parameter name of a method is not included externally, while all following parameter names are included externally when the method is called:

class MyFunClass {

    func hello(name: String, age: Int, location: String) {
        println("Hello \(name). I live in \(location) too.
            When is your \(age + 1)th birthday?")
    }

}

let myFunClass = MyFunClass()
myFunClass.hello("Mr. Roboto", age: 5, location: "San Francisco")

It is therefore best practice to include your first parameter name in your method name, just like in Objective-C:

class MyFunClass {

    func helloWithName(name: String, age: Int, location: String) {
 println("Hello \(name). I live in \(location) ...