Server.ClientVersion.IsNull C# (CSharp) Méthode

		public static bool IsNull( object x )
		{
			return Object.ReferenceEquals( x, null );
		}

 public static int Compare(ClientVersion a, ClientVersion b)
 {
     if (ClientVersion.IsNull(a) && ClientVersion.IsNull(b))
     {
         return(0);
     }
     if (ClientVersion.IsNull(a))
     {
         return(-1);
     }
     if (ClientVersion.IsNull(b))
     {
         return(1);
     }
     return(a.CompareTo(b));
 }