flux

How to handle tree-shaped entities in Redux reducers?

由 两盒软妹~` 提交于 2019-12-20 08:40:07
问题 I'm a bit stuck thinking on how to implement a reducer where its entities can have children of the same type. Let's take reddit comments as an example: each comment can have child comments that can have comments themselves etc. For simplification reason, a comment is a record of type {id, pageId, value, children} , with pageId being the reddit page. How would one model the reducer around that? I was thinking of having the reducer be a map -> id of the comments where you can filter by page

Flux/Alt data dependency, how to handle elegantly and idiomatically

由 梦想与她 提交于 2019-12-19 15:25:09
问题 I'm using alt as my flux implementation for a project and am having trouble wrapping my head around the best way to handle loading stores for two related entities. I'm using sources feature along with registerAsync for to handle my async/api calls and bind them to my views using AltContainer. I have two entities related one to one by the conversationId. Both are loaded via an api call: Once my job store is loaded with data I want to fill a conversation store. I use a source to load the job

Right way to update state in redux reducers

由 爱⌒轻易说出口 提交于 2019-12-18 11:51:20
问题 I'm a newbie in redux and es6 syntax. I make my app with official redux tutorial, and with this example. There is JS snippet below. My point - to define REQUEST_POST_BODY and RECEIVE_POST_BODY cases in posts reducer. Main difficult - to find and update right object in store. I try to use code from example: return Object.assign({}, state, { [action.subreddit]: posts(state[action.subreddit], action) }) But it used simple array of posts. It's not needed to find right post by id. Here my code:

How to handle complex side-effects in Redux?

由 感情迁移 提交于 2019-12-18 09:54:45
问题 I've been struggling for hours to finding a solution to this problem... I am developing a game with an online scoreboard. The player can log in and log out at any time. After finishing a game, the player will see the scoreboard, and see their own rank, and the score will be submitted automatically. The scoreboard shows the player’s ranking, and the leaderboard. The scoreboard is used both when the user finishes playing (to submit a score), and when the user just wants to check out their

Pretty Printing JSON with React

由 試著忘記壹切 提交于 2019-12-17 22:12:34
问题 I'm using ReactJS and part of my app requires pretty printed JSON. I get some JSON like: { "foo": 1, "bar": 2 } , and if I run that through JSON.stringify(obj, null, 4) in the browser console, it pretty prints, but when I use it in this react snippet: render: function() { var json = this.getStateFromFlux().json; return ( <div> <JsonSubmitter onSubmit={this.onSubmit} /> { JSON.stringify(json, null, 2) } </div> ); }, it renders gross JSON that looks like "{ \"foo\" : 2, \"bar\": 2}\n" . How do

Strategies for server-side rendering of asynchronously initialized React.js components

由 ε祈祈猫儿з 提交于 2019-12-17 21:39:03
问题 One of the biggest advantages of React.js is supposed to be server-side rendering . The problem is that the key function React.renderComponentToString() is synchronous which makes it impossible to load any asynchronous data as the component hierarchy is rendered on the server. Let's say I have a universal component for commenting which I can drop pretty much anywhere on the page. It has only one property, some kind of identifier (for example id of an article below which the comments are

Why use Redux over Facebook Flux? [closed]

由 吃可爱长大的小学妹 提交于 2019-12-17 02:51:55
问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 8 months ago . Locked . This question and its answers are locked because the question is off-topic but has historical significance. It is not currently accepting new answers or interactions. I've read this answer, reducing boilerplate, looked at few GitHub examples and even tried redux a

第四周仿真作业

由 安稳与你 提交于 2019-12-17 01:20:56
经过第四周关于交流电机的学习，我们通过对起调速特性的了解，进行仿真： 控制电机带重物上升，从静止加速到800r/min 保持800r/min匀速运动0.5s， 减速到静止，保持静止状态0.5s， 带重物下降，从静止达到600r/min 保持600r/min匀速运动0.6s， 减速到静止。 (为了便于仿真，匀速和静止持续时间较短) 分析：这里，由于自耦降压启动具有K值方便直接调节的特点，所以我们采用此种启动方法。由于变频调速具有调速范围广、平滑性好、能耗小无级调速，故采用变频调速。制动采用相对方便的反接制动。 参数：我们需要设置K，a,b,c 4个参数，由于不方便计算，都是通过观察图像进行调试，从而得出近似值。我是将K先固定，通过调节a,使转速稳定时接近800，调节b,使其接近制动，调节c，使转速稳定时接近600. 从而我这里得出的参数K=0.8，a=0.54,b=0.07,c=0.405. 代码： model SACIM "A Simple AC Induction Motor Model" type Voltage=Real(unit="V"); type Current=Real(unit="A"); type Resistance=Real(unit="Ohm"); type Inductance=Real(unit="H"); type Speed=Real(unit="r

Reactor系列(六)Exception异常系列(六)Exception异常

由 我只是一个虾纸丫 提交于 2019-12-16 13:12:52
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> #java##reactor##flux##error##exception# 视频解说: https://www.bilibili.com/video/av79468713/ FluxMonoTestCase.java package com.example.reactor; import lombok.extern.slf4j.Slf4j; import org.junit.jupiter.api.Test; import reactor.core.publisher.Flux; import java.io.IOException; @Slf4j public class FluxMonoTestCase extends BaseTestCase { @Test public void error() { Flux.range(-2, 5) .map(val -> { int i = val / val; return val; }) .onErrorContinue((ex, val) -> { //遇到错误继续订阅 if (ex instanceof IOException) { log.error("ex:{},val:{}", ex, val); } else { } })

Reactor系列(五)map映射

由 陌路散爱 提交于 2019-12-14 16:31:03
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> #java# #reactor# #flux# #map# #映射# 视频解视: https://www.bilibili.com/video/av79179444/ FluxMonoTestCase.java package com.example.reactor; import lombok.Data; import lombok.ToString; import lombok.extern.slf4j.Slf4j; import org.junit.jupiter.api.Test; import reactor.core.publisher.Flux; @Slf4j public class FluxMonoTestCase extends BaseTestCase { @Test public void map() { Flux<Employee> employeeFlux = Flux.fromIterable(list); employeeFlux.filter(employee -> employee.getSalary() == 2000) .map(employee -> { Leader leader = new Leader(); leader.setName(employee
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