User Guide

Operators 125

Note: The behavior of this operator is different for Flash Lite, depending on the version. For

example, Flash Lite 2.0 supports the AND (

&) operator as a bitwise AND. To concatenate

strings in Flash Lite 2.0, you must use the addition (

+) operator. However, Flash Lite 1.x

supports the AND (

&) operator for concatenating strings.

Operands

expression1 : Number - A number.

expression2 : Number - A number.

Returns

Number - The result of the bitwise operation.

Example

The following example compares the bit representation of the numbers and returns 1 only if

both bits at the same position are 1. In the following ActionScript code, you add 13 (binary

1101) and 11 (binary 1011) and return 1 only in the position where both numbers have a 1.

var insert:Number = 13;

var update:Number = 11;

trace(insert & update); // output : 9 (or 1001 binary)

In the numbers 13 and 11 the result is 9 because only the first and last positions in both

numbers have the number 1.

The following example shows the behavior of the return value conversion:

trace(0xFFFFFFFF); // 4294967295

trace(0xFFFFFFFF & 0xFFFFFFFF); // -1

trace(0xFFFFFFFF & -1); // -1

trace(4294967295 & -1); // -1

trace(4294967295 & 4294967295); // -1