MACROMEDIA FLASH 8-FLASH LITE 1.X ACTIONSCRIPT LANGUAGE - (Subtraction Assignment)

108 Flash Lite Operators
Description
Operator (arithmetic); used for negating or subtracting.
Usage 1: When used for negating, it reverses the sign of the numeric expression.
Usage 2: When used for subtracting, it performs an arithmetic subtraction on two numeric
expressions, subtracting
expression2 from expression1. When both expressions are
integers, the difference is an integer. When either or both expressions are floating-point
numbers, the difference is a floating-point number.
Example
Usage 1: The following statement reverses the sign of the expression 2 + 3:
trace(-(2 + 3));
// output: -5.
Usage 2: The following statement subtracts the integer 2 from the integer 5:
trace(5 - 2);
// output: 3.
The result, 3, is an integer.
Usage 3: The following statement subtracts the floating-point number 1.5 from the floating-
point number 3.25:
trace(3.25 - 1.5);
// output: 1.75.
The result, 1.75, is a floating-point number.
-= (subtraction assignment)
Availability
Flash Lite 1.0.
Usage
expression1 -= expression2
Operands
expression1, expression2 Numbers or expressions that evaluate to numbers.