Map array of objects to Dictionary in Swift

Question

I have an array of Person\'s objects:

class Person {
   let name:String
   let position:Int
}

and the array is:

Answer 1

You may write custom initializer for Dictionary type, for example from tuples:

extension Dictionary {
    public init(keyValuePairs: [(Key, Value)]) {
        self.init()
        for pair in keyValuePairs {
            self[pair.0] = pair.1
        }
    }
}

and then use map for your array of Person:

var myDictionary = Dictionary(keyValuePairs: myArray.map{($0.position, $0.name)})