result

Any variable.

expression

Any expression.

Using the ^= operator is exactly the same as specifying:

 	Copy Code
result = result ^ expression

The ^= operator looks at the binary representation of the values of two expressions and does a bitwise exclusive OR operation on them. The result of this operation behaves as follows:

 	Copy Code
0101 (result) 1100 (expression) ---- 1001 (result)

When one, and only one, of the expressions has a 1 in a digit, the result has a 1 in that digit. Otherwise, the result has a 0 in that digit.

Version 1

Reference

Concepts