[Flags]
public enum EnumHasFlag
{A = 1 << 0,B = 1 << 1,C = 1 << 2,Manager = A | B,Boss = A | B | C,
}

static void Main(string[] args)
{var rightA = EnumHasFlag.Boss;var rightB = EnumHasFlag.Manager;if (rightA.HasFlag(EnumHasFlag.C)) Console.WriteLine("rightA can do this");if (rightB.HasFlag(EnumHasFlag.C)) Console.WriteLine("rightB can do this");Console.ReadKey();
}

static void Main(string[] args)
{var A = 1 << 0 | 1 << 1;if ((A | (1 << 0)) == A) Console.WriteLine("A has 1<<0");if ((A | (1 << 2)) != A) Console.WriteLine("A doesn't have 1<<2");
}

static void Main(string[] args)
{ControlCenter(1 << 0 | 1 << 3);
}static void ControlCenter(int input)
{if ((input | (1 << 0)) == input) Console.WriteLine("Do 0");if ((input | (1 << 1)) == input) Console.WriteLine("Do 1");if ((input | (1 << 2)) == input) Console.WriteLine("Do 2");
}

static void Main(string[] args)
{var xx = TestEnum.Manager;if ((xx & TestEnum.A) == TestEnum.A) Console.WriteLine("Has A");Console.ReadKey();
}enum TestEnum
{A = 1 << 0,B = 1 << 1,C = 1 << 2,Manager = A | B,Boss = A | B | C,
}

var f1 = db.Where(x => !x.Status.HasFlag(FlagEnum.Deleted));
var f2 = db.Where(x => ((int)x.Status & (int)FlagEnum.Deleted) != (int)FlagEnum.Deleted);
var f3 = db.Where(x => x.Status.HasFlag(FlagEnum.Deleted));
var f4 = db.Where(x => ((int)x.Status & (int)FlagEnum.Deleted) == (int)FlagEnum.Deleted);

WHERE  NOT (((( CAST( [Extent1].[Status] AS int)) & ( CAST( 4 AS int))) =  CAST( 4 AS int)) AND ((CASE WHEN (( CAST( [Extent1].[Status] AS int)) & ( CAST( 4 AS int)) IS NULL) THEN cast(1 as bit) ELSE cast(0 as bit) END) = 0))

WHERE  NOT ((4 = (( CAST( [Extent1].[Status] AS int)) & (4))) AND (( CAST( [Extent1].[Status] AS int)) & (4) IS NOT NULL))

WHERE (( CAST( [Extent1].[Status] AS int)) & ( CAST( 4 AS int))) =  CAST( 4 AS int)

WHERE 4 = (( CAST( [Extent1].[Status] AS int)) & (4))}