Functions are reusable blocks of code that perform a specific task. They're one of the most fundamental building blocks in Swift -- and in programming generally. In this chapter, you'll learn how to define functions, pass data in and get results back, and use Swift's unique features like argument labels and function overloading.
Defining a Function
func greet(name: String) -> String {
return "Hello, \(name)!"
}
let message = greet(name: "Swift")
print(message) // Hello, Swift!Full content for this chapter will be added in a future update. The complete article covers parameters, argument labels, return values, returning tuples, default values, variadic parameters, inout parameters, function overloading, and functions as first-class values.
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