public static void RemoveFilter(IUserActivityFilter f) { lock (filters) { filters.Remove(f); } }
public static void AddFilter(IUserActivityFilter f) { lock (filters) { if (!filters.Contains(f)) filters.Add(f); } }
public static void AddFilter(IUserActivityFilter f) { lock (filters) { if (!filters.Contains(f)) { filters.Add(f); } } }