MACROMEDIA FLEX-FLEX ACTIONSCRIPT LANGUAGE, Reference

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– (minus) 93
Usage 2: The following example evaluates the function
foo()
, and then the function
bar()
, and
returns the result of the expression
a + b
:
var a:Number = 1;
var b:Number = 2;
function foo() {
a += b;
}
function bar() {
b *= 10;
}
trace((foo(), bar(), a+b)); // outputs 23
Usage 3: The following example shows the use of parentheses with functions:
var today:Date = new Date();
trace(today.getFullYear()); // traces current year
function traceParameter(param):Void {
trace(param);
}
traceParameter(2*2);//traces 4
See also
with
– (minus)
Availability
Flash Player 4.
Usage
(Negation) -
expression
(Subtraction)
expression1
-
expression2
Parameters
None.
Returns
An integer or floating-point number.
Description
Operator (arithmetic); used for negating or subtracting.
Usage 1: When used for negating, it reverses the sign of the numerical
expression
.
Usage 2: When used for subtracting, it performs an arithmetic subtraction on two numerical
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.
For more information, see “Operator precedence and associativity” on page 32 .