Title here
Summary here
Variadic Functions in ActionScript
Here’s a function that will take an arbitrary number of int values as arguments.
public function sum(...nums:int):void {
trace(nums, " ");
var total:int = 0;
for each (var num:int in nums) {
total += num;
}
trace(total);
}
public function main():void {
// Variadic functions can be called in the usual way with individual arguments.
sum(1, 2);
sum(1, 2, 3);
// If you already have multiple args in an array, you can apply them to a variadic function using `apply`
var nums:Array = [1, 2, 3, 4];
sum.apply(null, nums);
}To run the program and see the output.
$ amxmlc VariadicFunctions.as
$ adl VariadicFunctions.swfOutput will be:
[1,2] 3
[1,2,3] 6
[1,2,3,4] 10Another key aspect of functions in ActionScript 3 is their ability to form closures and handle asynchronous operations, which we’ll look at next.