Transducers remove the requirement of being lazy to optimize for things like take(10). However, it can still be useful to "bind" a collection to a set of transformations and pass it around, without actually evaluating the transformations. As not…

在上一篇讨论里我们介绍了Source,它的类型款式是这样的:Process[F[_],O].Source是通过await函数来产生数据流.await函数款式如下: def await[F[_], A, O](req: F[A])(rcv: A => Process[F, O]): Process[F, O] await函数的作用是:运算F从外界数据源获取数据A,如:从数据库读取记录.从网络读取网页或读取键盘鼠标输入等.获取数据A后输入函数rcv来生成Process[F,O]类型.这是一种产生数据…

We've seen how we can transduce from arrays or other iterables, but plain objects aren't iterable in Javascript. In this lesson we'll modify our transduce() function so that it supports iterating from plain objects as well, treating each key value pa…

Transducers are composable algorithmic transformations. They are independent from the context of their input and output sources and specify only the essence of the transformation in terms of an individual element. Because transducers are decoupled fr…

https://github.com/couchbaselabs/vellum Building an FST To build an FST, create a new builder using the New() method. This method takes an io.Writer as an argument. As the FST is being built, data will be streamed to the writer as soon as possible. W…

A frequent use case when transducing is to apply a transformation to items without changing the type of the collection. In this lesson, we'll create a helper to do just that. seq will be similar to into, except the target type will be inferred from t…

Our transduce function is powerful but requires a lot of boilerplate. It would be nice if we had a way to transduce into arrays and objects without having to specify the inner reducer behaviour, i.e. how to build up values, since a given collection t…

原文地址:Functional-Light-JS 原文作者:Kyle Simpson-<You-Dont-Know-JS>作者 关于译者:这是一个流淌着沪江血液的纯粹工程:认真,是 HTML 最坚实的梁柱:分享,是 CSS 里最闪耀的一瞥:总结,是 JavaScript 中最严谨的逻辑.经过捶打磨练,成就了本书的中文版.本书包含了函数式编程之精髓,希望可以帮助大家在学习函数式编程的道路上走的更顺畅.比心. 译者团队(排名不分先后):阿希.blueken.brucecham.cfanlife.d…

开启阅读模式 WATERHAMMER A COMPLEX PHENOMENON WITH A SIMPLE SOLUTION Waterhammer is an impact load that is the most misunderstood force known to pressure transducers today. A waterhammer is created by stopping and/or starting a liquid flow suddenly. The re…

简介 概念 安装部署 ES安装 数据索引 索引优化 内存优化 1简介 ElasticSearch(简称ES)是一个分布式.Restful的搜索及分析服务器,设计用于分布式计算:能够达到实时搜索,稳定,可靠,快速.和Apache Solr一样,它也是基于Lucence的索引服务器,而ElasticSearch对比Solr的优点在于: 轻量级:安装启动方便,下载文件之后一条命令就可以启动. Schema free:可以向服务器提交任意结构的JSON对象,Solr中使用schema.xml指定了索引结…