class LatLng {
  final double lat;
  final double lng;

  LatLng(this.lat, this.lng);
  LatLng.empty() : lat = 0, lng = 0;

  factory LatLng.fromJson(Map<String, dynamic> json) {
    return LatLng(json['lat'] as double, json['lng'] as double);
  }

  Map<String, double> toJson() {
    return {'lat': lat, 'lng': lng};
  }

  @override
  bool operator ==(Object other) {
    if (other is! LatLng) return false;
    return hashCode == other.hashCode;
  }

  @override
  int get hashCode => Object.hash(lat, lng);

  @override
  String toString() {
    return '${lat.toString()}, ${lng.toString()}';
  }
}