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iOS

Kami Wang
Kami Wang
5,643 Points

Returning Complex Values-- I wrote exactly the same code which in the video, but there are three errors. Why?

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 Blue 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)   [Error:Ambiguous use of 'carpetCostCalculator(length:width:carpetColor:)'

result.price   [Error:Value of type 'Int' has no member 'price']
result.carpetColor   [Error:Value of type 'Int' has no member 'carpetColor']

1 Answer

Michael Hulet
Michael Hulet
47,842 Points

Somewhere, you have carpetCostCalculator(length:width:carpetColor:) defined more than once, and the multiple different implementations are defined to accept and/or return different types, and Swift doesn't know which one to use. Solve that error by specifying what you want where there is ambiguity, and your code should work (in a Playground)