CODEWITHSUNDEEP
swiftclass
Jef Roosens
Jef Roosens

Reputation: 51

Swift: Computed Properties Using Same Getters And/Or Setters

Everyone. I was wondering if it was possible in Swift to use the same property observers for multiple variables, without having to re-write them every time?

For example in this piece of Swift code below:

class Foo {
func setInfo() {
    //Do Something
}

var var1 = "" {
    didSet {
        setInfo()
    }
}

var var2 = "" {
    didSet {
        setInfo()
    }
}

var var3 = "" {
    didSet {
        setInfo()
    }
}
}

I have to write the same didSet-observer for every variable. Is there a way to write this shorter and without writing it over and over again?

Thanks in advance.

Upvotes: 0

Views: 315

Answers (1)

Yury
Yury

Reputation: 6114

Write observers in one line if you wish (so do I in short constructions), it looks more readable. But there is generally no other way.

class Foo {

    var var1 = "" {didSet {setInfo()}}
    var var2 = "" {didSet {setInfo()}}
    var var3 = "" {didSet {setInfo()}}

    func setInfo() {
        //Do Something
    }
}

Upvotes: 2

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