Derek.swift

do {
	let jsonDict = try NSJSONSerialization.JSONObjectWithData(fileContents!, options: []) as! NSDictionary
	if let features = jsonDict["features"] as? [Dictionary<String, AnyObject>] {
		
		
		// try this
		var oneFeature = features[0]["geometry"]!["coordinates"]!![0][3]

		
		for feature in features {
			if let geometry = feature["geometry"] as? Dictionary<String, AnyObject> {
				if let coordinates = geometry["coordinates"] as? Dictionary<Int, AnyObject> {
					let coordinatesPair = coordinates[0]
//					let path = GMSMutablePath()
					//                            for coords in coordinatesPair {
					//                                    let longitude = coords[0].doubleValue
					//                                    let latitude = coords[1].doubleValue
					//    //                            print("Latitude: \(latitude), Longitude: \(longitude)")
					//
					//                                    path.addCoordinate(CLLocationCoordinate2D(latitude: latitude, longitude: longitude))
					//                            }
					//
					//                            let polyline = GMSPolyline(path: path)
					//                            polyline.strokeColor = UIColor.redColor()
					//                            polyline.strokeWidth = 5
					//                            polyline.map = mapView
				}
			}
		}
	}
} catch let error as NSError {
	print("Failed to load: \(error.localizedDescription)")
} catch {
	
}

do {
    guard let fileContents = fileContents else { return }
    guard let jsonDict = try NSJSONSerialization.JSONObjectWithData(fileContents, options: []) as? NSDictionary else { return }
    guard let featuresArray = jsonDict["features"] as? NSArray else { return }
    guard featuresArray.count > 0 else { return }
    guard let featuresDict = featuresArray[0] as? NSDictionary else { return }
    guard let coordinatesArray = featuresDict["geometry"] else { return }
    guard coordinatesArray.count > 0 else { return }
    guard let coordinateArray = coordinatesArray[0] as? NSArray else { return }
    guard coordinateArray.count > 3 else { return }
    var oneFeature = coordinateArray[3]
    ...stuff...
}