Xor Operator

Description

Used to perform a logical exclusion on two expressions.

Syntax

[result =] expression1 Xor expression2

The Xor operator syntax has these parts:

Part	Description

result	Optional; any numeric variable.
expression1	Required; any expression.
expression2	Required; any expression.

Remarks

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	Then result is

True	True	False
True	False	True
False	True	True
False	False	False

The Xor operator performs as both a logical and bitwise operator. A bit-wise 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

0	0		0
0		1		1
1		0		1
1		1		0

See Also

Operator precedence.

Example

This example uses the Xor operator to perform logical exclusion on two expressions.

Dim A, B, C, D, MyCheck
A = 10: B = 8: C = 6: D = Null    ' Initialize variables.
MyCheck = A > B Xor B > C            ' Returns False.
MyCheck = B > A Xor B > C            ' Returns True.
MyCheck = B > A Xor C > B            ' Returns False.
MyCheck = B > D Xor A > B            ' Returns Null.
MyCheck = A Xor B                        ' Returns 2 (bitwise comparison).