Map an array into a dictionary with Swift 2.0

toDict.swift

extension Array {
    
    /*!
    Convert an array to a dictionary of two of it's element's properties
    
    - parameter f: the parse block
    
    - returns: a dictionary of the type of the tuple returned by the parse block
    */
    func toDict<K, V>(f: (Element -> (K, V))) -> [K: V] {
        
        var dict = [K: V]()
        
        forEach { (e) -> () in
            
            let (k, v) = f(e)
            dict[k] = v
        }
        
        return dict
    }
}