Tuples
Tuples are compound types made up of multiple values. They are used to group related bits of information, for simpler things that don’t need structs or classes The values in a tuple don’t have to be of the same type.
Composing a tuple
let player = (name: "Maya", level: 5, score: 150)
print(player) // (name: "Maya", level: 5, score: 150)
print("\(player.name): level \(player.level), \(player.score) pts") // Maya: level 5, 150 pts
The labels are optional:
let player = ("Maya", 5, 150)
print(player) // ("Maya", 5, 150)
print("\(player.0): level \(player.1), \(player.2) pts") // Maya: level 5, 150 pts
Decomposing a tuple
A tuple can be decomposed into separate variables with any name:
let player = (name: "Maya", level: 5, score: 150)
let (currentName, currentLevel, currentScore) = player
print("\(currentName): level \(currentLevel), \(currentScore) pts") // Maya: level 5, 150 pts
If only some values are needed, _ may be used to avoid creating a variable for unused values:
let player = (name: "Maya", level: 5, score: 150)
let (currentName, _, _) = player
print("The current player is \(currentName).") // The current player is Maya.
