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iOS

Posted by Kami Wang
Kami Wang
5,643 Points

I typed the same codes as what in the video "Returning Complex Values", but the "result" value just appears errors. 

func carpetCostCalculator(length length: Int, width: Int, carpetColor: String = "tan") -> (price: Int, carpetColor: String) {
    // Gray Carpet - $1/sq ft
    // Tan Carpet - $2/sq ft
    // Deep Carpet - $4/sq ft

    let area = calcalateArea(length, width: width)

    var price: Int

    switch carpetColor {
    case "gray":
        price = area * 1
    case "tan":
        price = area * 2
    case "blue":
        price = area * 4
    default:
        price = 0
    }

    return (price, carpetColor)
}

let result = carpetCostCalculator(length: 10, width: 20) // Errors: Ambiguous use of 'carpetCostCalculator(length:width:carpetColor:)'

result.price
result.carpetColor
Martin Wildfeuer
Martin Wildfeuer
Courses Plus Student 11,071 Points

Not sure why you get an error, I can't reproduce it. What is the implementation of calcalateArea?

Kami Wang
Kami Wang
5,643 Points

Actually it's a spell mistake from the beginning. But it worked in some codes above this part. So I think it's not the reason why my 'result' value has the errors.

Martin Wildfeuer
Martin Wildfeuer
Courses Plus Student 11,071 Points

I know, I was not referring to the spelling mistake. The problem will most probably be in the code you did not post here, as your code example does not give any warnings in Playgrounds. (Of course, I had to do my own implementation of calcalateArea).

Ambiguous usually means that you have one or more classes implementing the same property/method. That could also be a subclass overriding the method. The compiler is not able to infer from the context on which kind of object you want to call this.