Used to perform a logical exclusion on two expressions.
result = expression1 Xor expression2
The Xor operator syntax has these parts:
|
Part |
Description |
|
result |
Any numeric variable. |
|
expression1 |
Any expression. |
|
expression2 |
Any expression. |
If one, and only one, of the expressions evaluates to True, result is True. However, if either expression is Null, result is also Null. When neither expression is Null, result is determined according to the following table:
|
If expression1 is |
And expression2 is |
The result is |
|
True |
True |
False |
|
True |
False |
True |
|
False |
True |
True |
|
False |
False |
False |
The Xor operator also performs a bit-wise comparison of identically positioned bits in two numeric expressions and sets the corresponding bit in result according to the following truth table:
|
If bit in expression1 is |
And bit in expression2 is |
The result is |
|
0 |
0 |
0 |
|
0 |
1 |
1 |
|
1 |
0 |
1 |
|
1 |
1 |
0 |
Operator Precedence.
This example uses the Xor operator to perform logical exclusion on two expressions.
A = 10: B = 8: C = 6: D = Null ' Initialize variables.= A > B Xor B > C ' Returns False.= B > A Xor B > C ' Returns True.= B > A Xor C > B ' Returns False.= B > D Xor A > B ' Returns Null.= A Xor B ' Returns 2 (bit-wise comparison).