首页
学习
活动
专区
工具
TVP
发布
精选内容/技术社群/优惠产品,尽在小程序
立即前往

在Haxe中,是否可以使数组对其他类为只读?

在Haxe中,可以通过使用@:arrayAccess元数据来使数组对其他类为只读。@:arrayAccess元数据是一种特殊的元数据,可以应用于类的字段或方法,并指示该字段或方法可以像数组一样进行访问。

要使数组对其他类为只读,可以按照以下步骤进行操作:

  1. 在目标类的字段或方法上添加@:arrayAccess元数据。
  2. 在目标类中实现get方法,该方法接受一个整数索引作为参数,并返回对应索引位置的值。
  3. 在目标类中实现length方法,该方法返回数组的长度。

以下是一个示例:

代码语言:txt
复制
class ReadOnlyArray {
    private var data:Array<Int>;

    public function new() {
        data = [1, 2, 3, 4, 5];
    }

    @:arrayAccess
    public function get(index:Int):Int {
        return data[index];
    }

    public function length():Int {
        return data.length;
    }
}

class Main {
    static function main() {
        var readOnlyArray:ReadOnlyArray = new ReadOnlyArray();
        trace(readOnlyArray[2]); // 输出:3
        trace(readOnlyArray.length()); // 输出:5
        readOnlyArray[2] = 10; // 编译错误,无法修改只读数组
    }
}

在上面的示例中,ReadOnlyArray类使用@:arrayAccess元数据将get方法标记为可通过索引访问。Main类中的readOnlyArray实例可以像数组一样访问,并且无法修改数组的值,因为它被声明为只读。

腾讯云相关产品和产品介绍链接地址:

请注意,以上仅为示例产品,实际使用时应根据具体需求选择适合的腾讯云产品。

页面内容是否对你有帮助?
有帮助
没帮助

相关·内容

  • Tutorial: How to "live stream" a media file

    I have tried a while to setup a free (open source etc.) live streaming solution which is able to stream “anything” to a flash frontend. The basic idea is to stream TV from v4l2 (and similar), but I also wanted to stream files (movies). I found that most tutorials only show how to setup the streaming or only show how to get a flash player up and running. The whole roundtrip is not really described and has its own difficulties. This tutorial describes the whole “roundtrip” from a media file on your disk to displaying it in a browser. I know that there are easier ways to send a media file to some player in a browser and I also know that playing a file is not really live streaming. (This is why I have put it in double quotes.) However, it shows the principle and it might be easier to set this up as a first step.

    02
    领券