Pasted

//: Playground - noun: a place where people can play
 
import Cocoa
 
extension Array {
    func dictionary<K: Hashable, V>() -> [K: V] where Element == Dictionary<K, V>.Element {
        var dictionary = [K: V]()
        for element in self {
            dictionary[element.key] = element.value
        }
        return dictionary
    }
}
 
var dictionary = ["x": 7, "y": 3, "n": 14, "z": 9]
dictionary = dictionary.filter{ $0.value % 7 == 0 }.dictionary()
dictionary