redux

Flutter : How to Debug which widgets re-rendered on state change

由 杀马特。学长 韩版系。学妹 提交于 2021-02-07 19:56:25
问题 I am using Redux with Flutter for state management. Whenever I dispatch an action, I want to know which widgets were re-rendered. Is there any way of doing it? 回答1: In flutter, whenever one widget update ; the whole widget tree repaint. So... no. But you can also introduce "repaint boundaries" manually by inserting in your tree a RepaintBoundary widget. This explicitly tells flutter to create a new painting layer for it's child (which implies memory cache). So that whenever that child updates

Converting functions from pure react to redux react

由 情到浓时终转凉″ 提交于 2021-02-07 18:21:36
问题 In pure react, I have written a function that I call in componentDidMount () : getTasks = (userId, query, statusTask, pageNumber) => { let check = {}; axios({ url: `/api/v1/beta/${userId}`, method: 'GET' }) .then(res => { check = res.data; if (res.data) { this.setState({ checkRunning: res.data, checkRunningId: res.data.id }); this.utilizeTimes(res.data.task_id); } }) .catch(error => { console.log(error); }) .then(() => { const params = { sort: 'name' }; if (query) { params['filter[qwp]'] =

Converting functions from pure react to redux react

由 落花浮王杯 提交于 2021-02-07 18:21:29
问题 In pure react, I have written a function that I call in componentDidMount () : getTasks = (userId, query, statusTask, pageNumber) => { let check = {}; axios({ url: `/api/v1/beta/${userId}`, method: 'GET' }) .then(res => { check = res.data; if (res.data) { this.setState({ checkRunning: res.data, checkRunningId: res.data.id }); this.utilizeTimes(res.data.task_id); } }) .catch(error => { console.log(error); }) .then(() => { const params = { sort: 'name' }; if (query) { params['filter[qwp]'] =

Passing React context through an HOC to a wrapped component

由 情到浓时终转凉″ 提交于 2021-02-07 13:58:46
问题 Is there a way that you can pass context through a React higher order component to a the component it wraps? I have a HOC that receives context from its parent and utilizes that context to perform a basic, generalized action and then wraps a child component that also needs to access that same context to perform actions. Examples: HOC: export default function withACoolThing(WrappedComponent) { return class DoACoolThing extends Component { static contextTypes = { actions: PropTypes.object, }

What is the correct way to wire up an input field in Redux

由 本秂侑毒 提交于 2021-02-07 09:48:32
问题 I have the following component in a Redux app for recipes, which currently only has a name right now, for simplicity sake. class RecipeEditor extends Component { onSubmit = (e) => { e.preventDefault() this.props.updateRecipe(this.props.recipe, { name: this.refs._name.value }) } render = () => { if (!this.props.recipe) { return <div /> } return ( <div> <form onSubmit={this.onSubmit}> <label>Name: </label> <input type="text" ref="_name" value={this.props.recipe.name} /> <input type="submit"

What is the correct way to wire up an input field in Redux

由 社会主义新天地 提交于 2021-02-07 09:47:39
问题 I have the following component in a Redux app for recipes, which currently only has a name right now, for simplicity sake. class RecipeEditor extends Component { onSubmit = (e) => { e.preventDefault() this.props.updateRecipe(this.props.recipe, { name: this.refs._name.value }) } render = () => { if (!this.props.recipe) { return <div /> } return ( <div> <form onSubmit={this.onSubmit}> <label>Name: </label> <input type="text" ref="_name" value={this.props.recipe.name} /> <input type="submit"

Webpack 构建优化总结

由 ⅰ亾dé卋堺 提交于 2021-02-07 09:33:25
初级分析：使用webpack内置的stats stats:构建统计信息 package.json中使用stats "scripts": { "build:stats":"webpack --env production --json > stats.json" } 复制代码 指定输出的json对象，输出一个json文件 Node.js 中使用 const webpack = require('webpack') const config = require('./webpack.config.js')('production') webacpk(config, (err, stats) => { if(err) { return console.error(err); } if(stats.hasErrors()) { return console.log(stats.toString("errors-only")) } console.log(stats); }) 复制代码 缺点：颗粒度太粗，看不出问题所在。 速度分析：使用speed-measure-webpack-plugin const SpeedMeasureWebpackPlugin = require('speed-measure-webpack-plugin') const smp = new

How I can render react components without jsx format?

由 半世苍凉 提交于 2021-02-07 07:12:17
问题 I try to make my "smart" popup component, which can open inside itself some components, but my realization isn't good, because it doesn't work. I use redux approach for creating popup and action of opening my popup is able to get name of any component for rendering before popup will be open; But I've some problem, after getting parameter, in our case it's nameOfComponent , I need to choose and render component with name nameOfComponent . And my question now, how do It can render component

How I can render react components without jsx format?

由 旧城冷巷雨未停 提交于 2021-02-07 07:08:32
问题 I try to make my "smart" popup component, which can open inside itself some components, but my realization isn't good, because it doesn't work. I use redux approach for creating popup and action of opening my popup is able to get name of any component for rendering before popup will be open; But I've some problem, after getting parameter, in our case it's nameOfComponent , I need to choose and render component with name nameOfComponent . And my question now, how do It can render component

Where to store WebRTC streams when building React app with redux

由 拈花ヽ惹草 提交于 2021-02-06 02:14:55
问题 I'm building a React.js application that interacts with the WebRTC apis to do audio/video calling. When a call is successfully established, an 'onaddstream' event is fired on the RTCPeerConnection instance, which contains the stream that I as a developer am supposed to connect to a video element to display the remote video to the user. Problem I'm having is understanding the best way to get the stream from the event to the React component for rendering. I have it successfully working by just
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