Performs a logical exclusion operation on two Boolean expressions, or a bitwise exclusion on two numeric expressions..
result = expression1 Xor expression2
- Required. Any Boolean or numeric variable. The result for Boolean comparison is the logical exclusion of two expressions. For bitwise operations the result is a numeric value resulting from the bitwise exclusion of two numeric expressions
- Required. Any Boolean or numeric expression.
- Required. Any Boolean or numeric expression of the same type as expression1.
For Boolean comparisons, if one and only one of the expressions evaluates to True, result is True. Otherwise, result is False. If either expression is stated as Nothing, that expression is evaluated as False.
|If expression1 is||And expression2 is||Then result is|
For numeric expressions, the Xor operator performs as a bitwise operator. A bitwise comparison of two expressions using exclusive-or logic to form the result, as shown in the following table:
|If bit in expression1 is||And bit in expression2 is||Then result is|
Note Since the logical/bitwise operators have a lower precedence than other arithmetic and relational operators, any bitwise operations should be enclosed in parentheses to ensure accurate execution.
If the operands consist of one Boolean expression and one numeric expression, the result Boolean expression will be converted to a numeric value (-1 for True, and 0 for False) and the bitwise operation will result.
This example uses the Xor operator to perform logical exclusion on two expressions. The result is a Boolean value representing whether only one of the expressions is true.
Dim A As Integer = 10 Dim B As Integer = 8 Dim C As Integer = 6 Dim myCheck As Boolean myCheck = A > B Xor B > C ' Returns False. myCheck = B > A Xor B > C ' Returns True. myCheck = B > A Xor C > B ' Returns False.
This example uses the Xor operator to perform logical exclusion of the individual bits of two numeric expressions. The bit in the result pattern is set if only one of the corresponding bits in the operands are set.
Dim A As Integer = 10 Dim B As Integer = 8 Dim C As Integer = 6 Dim myCheck As Integer myCheck = (A Xor B) ' Returns 2. myCheck = (A Xor C) ' Returns 12. myCheck = (B Xor C) ' Returns 14.