arrays - 如何定义一个包含单个元素的数组？

Question

我试图用单个元素定义一个数组......所以，

var arr:Array = new Array(1,2,3,4) // arr[0] = 1 
 // but
var arr:Array = new Array(1) // arr[0] = undefined 

//Also, 

var arr:Array = new Array([1]) // arr[0] = 1 , << ILLUSION
//Because, arr[0] is NOT A NUMBER, IT ITSELF IS OF TYPE=> ARRAY. 

var arr:Array = [1] //arr[0]=1 but i think it's AS1.0 notation..

那么，他们的任何 AS3.0 方法是用单个元素定义数组吗？

Answer 1

var arr:Array = [1]; //arr[0]=1 but i think it's AS1.0 notation..

为什么？这是完全合法的数组初始化简写，这正是实现它的方法。