在 Haxe 中如何为类实现数组运算符？

发布于 2024-11-26 11:26:17 字数 875 浏览 1 评论 0原文

我正在尝试在 Haxe 中编写一个类，支持使用 [] 运算符进行类似数组的访问，例如：

var vector = new Vec3();
trace(vector.length); // displays 3
vector[0] = 1; // array like access to the class, how?
vector[1] = 5.6; // more array access
vector[2] = Math.PI; // yet more array access

问题是我不知道如何定义一个类，以便它允许 [ ] 运算符。我需要这个类，而不是使用 Array 或 List 因为它存在一些技巧来支持我的动画系统（引用部件）使用故事板的向量（请参阅 http://www.youtube.com/watch?v=ijF50rRbRZI)

在 C# 中我可以这样写：

public float this[index] { get { ... } set { .... } }

我已阅读 Haxe 文档并找到了 ArrayAccess，但界面是空的。也就是说，我不明白如何实现它，或者如果我只是实现ArrayAccess ...我的类上的什么方法将被调用来检索在所述索引处浮动？

原文

I am trying to write a class in Haxe supporting array like access using the [] operator such as:

var vector = new Vec3();
trace(vector.length); // displays 3
vector[0] = 1; // array like access to the class, how?
vector[1] = 5.6; // more array access
vector[2] = Math.PI; // yet more array access

The problem is I don't know how to define a class such that it allows the [] operator. I need this class, rather than using an Array<Float> or List<Float> because there is some trickery going on with it to support my animation system which references to parts of vectors using storyboards (see http://www.youtube.com/watch?v=ijF50rRbRZI)

In C# i could write:

public float this[index] { get { ... } set { .... } }

I've read the Haxe documentation and found ArrayAccess<T>, but the interface is empty. That is I don't understand how to implement it, or if I just implement ArrayAccess<Float> ... what method on my class would be called to retrieve Float at said index?

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