异步生成器和Observables有什么区别?

问题描述

异步生成器:一个示例案例是可读流

Async generators: An example case is a readable stream

可观察的:处理异步数据流的基本协议

Observables: A fundamental protocol for processing asynchronous streams of data

这两种方法似乎都是解决异步数据流相同问题的不同方法.两者之间除了味觉上还有实际的区别吗?

These both seem like different ways of tackling the same problem of an asynchronous stream of data. Is there a practical difference between the two, besides a matter of taste?

推荐答案

从建议的API描述来看:

Judging from the proposed API descriptions:

• 可观察对象可以具有多个订阅者(广播)，异步迭代器只能具有单个阅读器(单播)
• 可观察对象推送事件，而异步迭代器则需要轮询
• 诚然，Observable构造函数的懒惰性质确实会使线条模糊

• observables can have multiple subscribers (broadcast), asynchronous iterators can only have a single reader (unicast)
• observables push the events, while asynchronous iterators need to be polled
• admittedly, the lazy nature of the Observable constructor does blur the lines

可观察对象基本上是事件发射器，而异步迭代器可用于形成流式传输流.我还建议您阅读一般反应性理论.

Observables are basically event emitters, while asynchronous iterators can be used to form a streaming flow. I also recommend the General Theory of Reactivity as a good read.

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