从Dart中的字符串创建通用类的实例？ [英] Create an instance of an Generic Class from a String in Dart?

问题描述

您好，从这里我知道我可以从一个字符串创建一个实例：

Hello from here I know that I can create an instance from a String:

How to get a Class name dynamically (from a string) in Dart, then create an instance?

但是如何从String中创建一个Generic类的实例，例如：

but How do I create an instance of a Generic class from a String, ie:

var class_name = "GenericController<Book>"; // user input here
new class_name();

推荐答案

这是目前不可能的（因为你可能注意到了） 。在Dart问题跟踪代码中有一个打开的案例，您应该在星标中显示您的兴趣：

This is not currently possible (as you probably noticed). There's an open case in the Dart issue tracker you should Star to show your interest:

https://code.google.com/p/dart/issues/detail?id=12921

这篇关于从Dart中的字符串创建通用类的实例？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！