streamjs和linqjs有什么关系 [英] What's the relationship between streamjs and linqjs

问题描述

阅读SICP之后，我最近发现了 streamjs .开发人员引用 linqjs 作为具有不同语法的替代实现，但是我无法建立连接. streamjs中的方法如何映射到linqjs中的方法?

After reading SICP, I recently discovered streamjs. The developer referenced linqjs as an alternate implementation with different syntax, but I can't make the connection. How do the methods in streamjs map to those in linqjs?

推荐答案

我都没有使用任何一个库，但是，这是我的初步分析(我已经阅读了很多SICP，但请注意，并不是全部内容).

I haven't used either library, but, here's my initial analysis (I've read quite a bit of SICP, but not the whole thing admittedly).

stream.js是列表的功能样式数据结构的实现.功能语言中的许多数据结构倾向于递归，就像Stream结构一样.它由头元素和尾部的Stream(后续元素)组成.在这里，可以通过允许尾部成为函数(即无限序列)来实现惰性评估.

stream.js is an implementation of a functional style data structure for a list. Many data structures in a functional language tend to be recursive, much like the Stream structure. It is composed of a head element, and a Stream for the tail (subsequent elements). Here, lazy evaluation can be achieved by allowing the tail to be a function (i.e. infinite sequences).

现在，要回答您的问题，linq.js提供的所有功能都应该能够与其他常见的高阶功能(例如，地图，缩小，行走，折叠等)一起定义.

Now, to answer your question, all of the functions provided by linq.js should be able to be defined with other common higher order functions like map, reduce, walk, fold, etc.

当然，stream.js不会实现linq.js中的Any()方法，但是您可以使用reduce()来实现.

Sure, stream.js does not implement the Any() method from linq.js, but you can just do that with reduce().

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