MACROMEDIA FLASH 8-LEARNING ACTIONSCRIPT 2.0 IN FLASH - Page 761

ActionScript coding conventions 761
The following example puts functions into a class file. This is a best practice when you choose
to use ActionScript 2.0, because it maximizes code reusability. To reuse the functions in other
applications, import the existing class rather than rewrite the code from scratch, or duplicate
the functions in the new application.
class mx.site.Utils {
static function randomRange(min:Number, max:Number):Number {
if (min>max) {
var temp:Number = min;
min = max;
max = temp;
}
return (Math.floor(Math.random()*(max-min+1))+min);
}
static function arrayMin(numArr:Array):Number {
if (numArr.length == 0) {
return Number.NaN;
}
numArr.sort(Array.NUMERIC | Array.DESCENDING);
var min:Number = Number(numArr.pop());
return min;
}
static function arrayMax(numArr:Array):Number {
if (numArr.length == 0) {
return undefined;
}
numArr.sort(Array.NUMERIC);
var max:Number = Number(numArr.pop());
return max;
}
}
You might use these functions by adding the following ActionScript to your FLA file:
import mx.site.Utils;
var randomMonth:Number = Utils.randomRange(0, 11);
var min:Number = Utils.arrayMin([3, 3, 5, 34, 2, 1, 1, -3]);
var max:Number = Utils.arrayMax([3, 3, 5, 34, 2, 1, 1, -3]);
trace("month: "+randomMonth);
trace("min: "+min);
trace("max: "+max);