Learning Swift™ Programming

Multiple Return Values

Like Objective-C functions, Swift functions can return only one value. Unlike Objective-C, though, Swift lets you use tuples as values, which can be useful for packaging together multiple return values so that you can pass around multiple values as one value. Consider a situation where a function is required to return the sum of two numbers as well as the higher of the two. This means that you need the function to returns two values, both of type Int encapsulated in a tuple. Here’s what it looks like:

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func sumAndCeiling(a: Int, b: Int) -> (Int, Int) {    let ceiling = a > b ? a : b    let sum = a + b    return (sum, ceiling)}

You can declare multiple return values by encapsulating them in parentheses, ...