128 ActionScript language elements
<<= bitwise left shift and assignment operator
expression1 <<= expression2
This operator performs a bitwise left shift (<<=) operation and stores the contents as a result
in
expression1. The following two expressions are equivalent:
A <<= BA = (A << B)
Availability: ActionScript 1.0; Flash Lite 2.0
Operands
expression1 : Number - A number or expression to be shifted left.
expression2 : Number - A number or expression that converts to an integer from 0 to 31.
Returns
Number - The result of the bitwise operation.
Example
In the following example, you use the bitwise left shift and assignment (<<=) operator to shift
all bits one space to the left:
var x:Number = 4;
// shift all bits one slot to the left.
x <<= 1;
trace(x); // output: 8
// 4 decimal = 0100 binary
// 8 decimal = 1000 binary
See also
<< bitwise left shift operator, >>= bitwise right shift and assignment
operator
, >> bitwise right shift operator
~ bitwise NOT operator
~expression
Also known as the one's complement operator or the bitwise complement operator. Converts
the
expressionto a 32-bit signed integer, and then applies a bitwise one's complement. That
is, every bit that is a 0 is set to 1 in the result, and every bit that is a 1 is set to 0 in the result.
The result is a signed 32-bit integer.
For example, the hex value 0x7777 is represented as this binary number: 0111011101110111
The bitwise negation of that hex value, ~0x7777, is this binary number: 1000100010001000
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