Array和Observable Array有什么区别？ [英] What is the difference between an Array and an Observable Array?

问题描述

在TypeScript中， any [] 和 Observable< any []）> 之间的主要区别是什么？ ？

使用它们的缺点和优点是什么？

In TypeScript, what is the main difference between any[] and Observable<any[])>?
What are the cons and pros of using each of them?

推荐答案

Observable用于实现观察者模式。您可以订阅此Observable，并在Observable发出数据时发现异步。

Observables are used for implementing the Observer pattern. You can subscribe this Observable and you getting asynchrounous noticed when the Observable emit data.

Observable< any []）是 Obervable ，其中包含一个数组。在这种情况下，数组可以包含任何类型，因为它是由任何键入的。

Observable<any[]) is Obervable which contains an array. In this case, the array can contain any type, since it is typed by any.

数组是只有一个对象，一次可以容纳多个值。

A array is only an object, which can hold more than one value at a time.

Observable对象表示基于推送的集合。

The Observable object represents a push based collection.

观察者和观察者接口为基于推送的通知提供了一个通用机制
，也称为观察者设计
模式。 Observable对象表示发送
通知的对象（提供者）; Observer对象表示接收它们的类
（观察者）。

The Observer and Observable interfaces provide a generalized mechanism for push-based notification, also known as the observer design pattern. The Observable object represents the object that sends notifications (the provider); the Observer object represents the class that receives them (the observer).

查看rxjs文档

vs。

数组是类似列表的对象，其原型具有执行遍历和变异操作的方法。 JavaScript数组的长度及其元素的类型都不固定。

Arrays are list-like objects whose prototype has methods to perform traversal and mutation operations. Neither the length of a JavaScript array nor the types of its elements are fixed.

MDN - 数组

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