public static MeasurementPlace Get(string name, DateTime date)
{
var place = Places.SingleOrDefault(x => x.Name == name && x.Date == date);
if (place == null)
{
place = new MeasurementPlace(name, date);
Places.Add(place);
}
return(place);
}
public Measurement(int stationNr, double pollution, MeasurementPlace place)
{
StationNr = stationNr;
Pollution = pollution;
Place = place;
}