将Cocoa Touch纬度/经度转换为不带度数符号的字符串

import CoreLocation

func convertCoordinateToString(coordinate: CLLocationCoordinate2D) -> String {
    let latitude = String(format: "%.6f", coordinate.latitude)
    let longitude = String(format: "%.6f", coordinate.longitude)
    return "\(latitude),\(longitude)"
}

let coordinate = CLLocationCoordinate2D(latitude: 37.7749, longitude: -122.4194)
let coordinateString = convertCoordinateToString(coordinate: coordinate)
print(coordinateString) // 输出：37.774900,-122.419400