AS3:如何将向量转换为数组 [英] AS3: How to convert a Vector to an Array

问题描述

在 Actionscript3 中将向量转换为数组的最佳方法是什么?

What's the nicest way to convert a Vector to an Array in Actionscript3?

正常的转换语法不起作用:

The normal casting syntax doesn't work:

var myVector:Vector.<Foo> = new Vector();
var myArray:Array = Array(myVector); // calls the top-level function Array()

由于Array函数的存在.上面的结果是一个数组，但它是一个由原始向量组成的单个元素的数组.

due to the existance of the Array function. The above results in an array, but it's an array with a single element consisting of the original Vector.

这使得稍微冗长:

var myArray:Array = new Array();
for each (var elem:Foo in myVector) {
    myArray.push(elem);
}

这很好，我想，虽然有点罗嗦.这是执行此操作的规范方法，还是标准库中隐藏了一个 toArray() 函数?

which is fine, I guess, though a bit wordy. Is this the canonical way to do it, or is there a toArray() function hiding somewhere in the standard library?

推荐答案

你的方法是最快的......如果你认为它很冗长，那么构建一个实用函数...... :)

your approach is the fastest ... if you think it's to verbose, then build a utility function ... :)

要构建实用程序函数，您可能必须按如下方式删除类型:

To build a utility function, you will probably have to drop the type as follows:

function toArray(iterable:*):Array {
     var ret:Array = [];
     for each (var elem:Foo in iterable) ret.push(elem);
     return ret;
}

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