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Accessing a tuple's components via a number is not ideal as we have to remember the order of the tuple members to ensure that we are accessing the correct one; this is even more confusing when the members are of the same type. To provide some context, we can add labels to the tuple members to identify them when they are accessed. Tuple labels are defined in a similar way to parameter labels, preceding the type and separated by a : . Let's add labels to both the tuple declaration and the tuple construction, and when accessed:

func normalisedStarRating(forRating rating: Float, 
                          ofPossibleTotal total: Float) 
                          -> (starRating: Int, displayString: String) { 
     
    let fraction = rating / total 
    let ratingOutOf5 = fraction * 5 
    let roundedRating = round(ratingOutOf5) // Rounds to the nearest integer. 
    let numberOfStars = Int(roundedRating) // Turns a Float into an Int 
    let ratingString = "\(numberOfStars) Star Movie" 
    return (starRating: numberOfStars, displayString: ratingString) 
} 
 
let ratingValueAndDisplayString = normalisedStarRating(forRating: 5, ofPossibleTotal: 10) 

let ratingValue = ratingValueAndDisplayString.starRating 
print(ratingValue) // 3 - Use to show the right number of stars 

let ratingString = ratingValueAndDisplayString.displayString 
print(ratingString) // "3 Stars" - Use to put in the label 

Now, at the point of access, we can be sure that we have the right tuple member.