Swift - Data Type Tuples

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Introduction

A tuple is a collection of data.

Tuples bundle any number of values of any type together into a single value.

You create them by wrapping comma-separated values inside parentheses: 

let fileNotFound = (404,"File Not Found")

You can get values out of it by index: 

fileNotFound.0 // 404

A tuple's indexes start at 0.

You can apply labels to values inside tuples: 

let serverError = (code:500, message:"Internal Server Error") 
serverError.message // "Internal Server Error"

You can use tuple to return multiple values from a function.

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