reactive | 易学教程

How can I make UI respond to reactive values in for loop?

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问题 I'm making a shiny app which reads from a file, does some processing, and produces a table in the UI. The problem is that the file may be very big, and the analysis is slow, so processing the table may take a long time (often several minutes, possibly half an hour). I would like to display a partial table, and add to it every time a new row has been computed so that the user can see the data as it is generated. I'm using a reactive value to store the data to make the table, and then rendering

Reactive WebClient GET Request with text/html response

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Currently I’m having an issue with new Spring 5 WebClient and I need some help to sort it out. The issue is: I request some url that returns json response with content type text/html;charset=utf-8 . But unfortunately I’m still getting an exception: org.springframework.web.reactive.function.UnsupportedMediaTypeException: Content type 'text/html;charset=utf-8' not supported . So I can’t convert response to DTO. For request I use following code: Flux<SomeDTO> response = WebClient.create("https://someUrl") .get() .uri("/someUri").accept(MediaType.APPLICATION_JSON) .retrieve() .bodyToFlux(SomeDTO

RxJS not all Subscribers receive all events

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I'm working on an exercise about RxJS. And there's something very strange happening: typoStream.subscribe(x => console.log('wont get executed')); wordCompletedStream.subscribe(nextStream); typoStream.subscribe(x => console.log('will get executed')); When the application runs the first console.log won't get printed and the second one will. Regardless of what the streams are and how they interact - this should never happen, right? Why is it important when I subscribe to an observable - shouldn't it emit the event to every subscriber anyways? If you want to try it: http://embed.plnkr.co

Angular2 reactive forms select multiple attribute?

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问题 I use the following code in my app with reactive forms. If I uncomment the [multiple] line, the Choose ... option does not set the dformControl form control object back to status INVALID . dformControl.multiple by the way returns false . Even if I change the commented line to [multiple]="false" , still switching back to the Choose ... option does NOT set the form control status to INVALID . <select class="form-control" [id]="dformControl.key" [formControlName]="dformControl.key" /*[multiple]=

How can I make UI respond to reactive values in for loop?

阅读更多关于 How can I make UI respond to reactive values in for loop?

I'm making a shiny app which reads from a file, does some processing, and produces a table in the UI. The problem is that the file may be very big, and the analysis is slow, so processing the table may take a long time (often several minutes, possibly half an hour). I would like to display a partial table, and add to it every time a new row has been computed so that the user can see the data as it is generated. I'm using a reactive value to store the data to make the table, and then rendering the table using renderTable() below is an illustration of the problem (it's not my actual code for

提升不止一点点，Dubbo 3.0 预览版详细解读,还愣着干啥啊？进来啊

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Dubbo 自 2011 年 10 月 27 日开源后，已被许多非阿里系的公司使用，其中既有当当网、网易考拉等互联网公司，也不乏中国人寿、青岛海尔等大型传统企业。自去年 12 月开始，Dubbo 3.0 便已正式进入开发阶段，并备受社区和广大 Dubbo 用户的关注，本文将为您详细解读3.0 预览版的新特性和新功能。下面先解答一下两个有意思的与 Dubbo 相关的疑问。 · 为什么 Dubbo 一开源就是 2.0 版本？之前是否存在 1.0 版本？笔者曾做过 Dubbo 协议的适配兼容，Dubbo 确实存在过 1.x 版本，而且从协议设计和模型设计上都与 2.0 的开源版本协议是完全不一样的。下图是关于 Dubbo 的发展路径： · 阿里内部正在使用 Dubbo 开源版本吗？是的，非常确定，当前开源版本的 Dubbo 在阿里巴巴被广泛使用，而阿里的电商核心部门是用的 HSF2.2 版本，这个版本是兼容了 Dubbo 使用方式和 Remoting 协议。当然，我们现在正在做 HSF2.2 的升级，直接依赖开源版本的 Dubbo 来做内核的统一。所以，Dubbo 是得到大规模线上系统验证的分布式服务框架，这一点毋容置疑。 Dubbo 3.0 预览版的要点 Dubbo 3.0 在设计和功能上的新增支持和改进，主要是以下四方面： · Dubbo 内核之 Filter 链的异步化

SpringBoot从入门到放弃，原理篇-自动配置原理

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SpringBoot从入门到放弃，原理篇-自动配置原理 springboot自动配置原理配置文件能配置的属性参照自动配置原理 1、springboot启动的时候加载主配置类，开启了自动配置功能@EnableAutoConfiguration 2、@EnableAutoConfiguration 作用：利用EnableAutoConfigurationImportSelector给容器中导入一些组件可以查看seletcImports方法的内容 List<String> configurations = getCandidateConfigurations(annotationMetadata, attributes); 获取候选的配置 SpringFactoriesLoader.loadFactoryNames() 扫描所有jar包类路径下 META-INF/springboot.factories 把扫描到的这些文件袋额内容包装成properties对象。从properties中获取到EnableAutoConfiguration.class类（类名）对应的值，然后把他们添加到容器中将类路径下 META-INF/spring.factories里边配置的所有EnableAutoConfigration的值加入到了容器中; （spring-boot

Vue change object in array and trigger reactivity

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问题 How can I trigger an update when altering part of an object found by index in an array? The docs show how to alter the value of an array: Vue.set(example1.items, indexOfItem, newValue) or example1.items.splice(indexOfItem, 1, newValue) But how to alter the value of a property on an object in an array without changing the rest of the object? The following works to update the property, but Vue doesn't react to the change until something else triggers an update. example1.items[indexOfItem].some

重磅来袭！Reactive 架构专场四城巡回演讲

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Reactive 究竟是什么？Reactive 对架构设计的影响和冲击，以及给开发方式带来的改变有哪些？为什么阿里巴巴、Pivotal、Facebook 纷纷在生产环境中实践 Reactive？本次的四城巡演活动中，我们请到了著名的 JAVA 布道师 JoshLong、阿里巴巴 P9 雷卷以及 Netifi CTO Ryland Degnan 等国内外大牛现场为你解答以上疑问！活动亮点著名 Java 布道师 Josh Long（龍之春）现场详解如何使用 Reactor、RSocket 进行编程以及 Spring Gateway 等 Spring 新特性；阿里巴巴资深专家雷卷讲述阿里云上如何接入和使用 RSocket Broker？ Netifi CTO 将对 RSocket 进行全面介绍，包括 RSocket broker 的实现和功能以及 RSocket 等内容。活动详情北京场时间：11 月 21 日 16:30-20:20 预约直播链接： https://developer.aliyun.com/live/1650 报名方式：戳我报名杭州场时间：11 月 22 日 13:30-17:55 预约直播链接： https://developer.aliyun.com/live/1651 报名方式：戳我报名深圳场时间：11 月 23 日 13:00-16:50

Angular2 reactive forms select multiple attribute?

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I use the following code in my app with reactive forms. If I uncomment the [multiple] line, the Choose ... option does not set the dformControl form control object back to status INVALID . dformControl.multiple by the way returns false . Even if I change the commented line to [multiple]="false" , still switching back to the Choose ... option does NOT set the form control status to INVALID . <select class="form-control" [id]="dformControl.key" [formControlName]="dformControl.key" /*[multiple]="dformControl.multiple"*/> <option *ngIf="!dformControl.value" value=""> Choose ... </option> <option

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