Swift implement setter without getter

Question

How do you implement setter without getter in Swift? I need to call a method when the value is set:

var selectedIndex : Int{
    set {
        selectItemAtIndex(newValue)
    }
}

but in Swift, you are required to use both getter and setter, not just one.

it doesn't make sense to non-readable property. just use method SetSelectedIndex(Int) — Bryan Chen
– Bryan Chen, Commented Jun 16, 2014 at 5:51

chug2k · Accepted Answer · 2017-01-30 15:12:17Z

25

You can use the property observer didSet. This will be called immediately after setting the value.

var selectedIndex: Int {
  didSet {
    selectItemAtIndex(selectedIndex)
  }
}

chug2k

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answered Jun 16, 2014 at 5:42

Anil Varghese

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