CODEWITHSUNDEEP
swift
user6194042
user6194042

Reputation: 11

Can swift classes use computed property arrays

Is it possible to create a computed array property or does one need to create an overloaded function to accomplish this?

I.E. Could this be rewritten as a property

class myclass (
    private var myInternalArray[pvtstrct]()
init(){
 <loop building myInternalArray.insert(struct, at Index) .....>
}



func lfof(index: Int, value: String) {
    myInternalArray(index) = PrivateCoversionFromString(value)
}

func lfof(index: Int) -> String {
    return PrivateConversionToString(myInternalArray(index))
}

Upvotes: 0

Views: 2714

Answers (1)

catalandres
catalandres

Reputation: 1159

It seems that the functionality that you are looking for is in the section on the official Swift reference on subscripts.

Your first function is a setter and the second one is a getter. You could use a subscript to make it less awkward:

class MyClass {

    private var _privateArray: [SomeType]

    subscript(index: Int) -> String {
        get {
            return toString(_privateArray[index])
        }
        set(newValue) {
            _privateArray[index] = fromString(newValue)
        }
    }

    func fromString(value: String) -> SomeType {
        // The code that turns a string into SomeType
    }

    func toString(value: SomeType) -> String {
        // The code that turns SomeType into a string
    }
}

This piece of code was adapted from The Swift Programming Language (Swift 2.2).

Upvotes: 2

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