Passing property type as parameter

Question

Is there a way to pass the property to a function as a parameter ?

class Car {

    let doors : Int = 4
    let price : Int = 1000
}

Is there a way to pass the Car property as a type to a function ?

I would like to achieve the following:

func f1(car: Car, property: SomeType) {

    println(car.property)

}

let c1 = Car()

f1(c1, doors)
f1(c1, price)

Would closures help, if so how ?

Answer 1

I'm not sure this is what you want, but using closure:

func f1<T>(car: Car, getter: Car -> T) {
    println(getter(car))
}

let c1 = Car()

f1(c1, {$0.doors})
f1(c1, {$0.price})

Answer 2

You can use key value coding:

class Car : NSObject {
    let doors : Int = 4
    let price : Int = 1000
}

Then your f1 function could be:

func f1(car: Car, property: String) {
    println(car.valueForKey(property))
}

And you can call it like so:

f1(car, property: "doors")
f1(car, property: "price")