#reactredux

[rehman-coding]

. Have anything to add? Feel free to leave your questions or ideas or just say hi in the comments :) Happy !🎉 💙🌬️❄️☃️ ———————————————————————— ⭐ CAREER CHANGE TIPS ———————————————————————— 📌 How to become a self-taught developer? ⚡ Useful links and roadmaps in my bio! ———————————————————————— 📌 Follow: @rehman_coding 💼 Portfolio: www.a-rehman.com ⚙️ GitHub: https://github.com/MuhRehman 💎 LinkedIn: https://www.linkedin.com/in/abdul-rehman-%E2%9C%94-8611505b/#reactjs. React.js Developer #components #angularjs #reactredux #project #development #web #router #api #app #vuejs #frontend #react #webdev #nodejs #code #developer #redux #javascript #reactjs #instareactjs #instajavascript #instadeveloper #instafrontend #instadevelopment #instaproject #instatypescript #instarouter #instaapi #instareact https://www.instagram.com/p/Cct1FgHpiVQ/?igshid=NGJjMDIxMWI=

[nerdsprite]

Wondering how to implement useSelector and useDispatch. If you are confused how these two works then here is one article for you go and check it have detailed explanation.

[codetru]

Ever since its release in 2015, Redux has become more of a convention than a requirement. Redux was applied to all the React applications irrespective of its requirement. However, things started to change after the release of React 16.3 and subsequent versions. The usage of Redux was slightly put off. However, Redux is far from becoming obsolete even today.

With its great documentation, Redux proposes to be a wonderful product yet. Complex applications can be simplified using Redux state management.

To learn more on the Redux use cases and how things have changed with React, read our latest React blog here https://lnkd.in/dDngSUQT .

For React-Redux applications, contact our marketing team for more details and price quotes.

[heartcentrictech]

I'm keeping myself busy with React using Redux😎 Here comes some insigts; Redux is a predictable state container for javascripts Apps and it stores the state of your application🥳 React is the UI library used to build user interfaces🤩Components in React have their own state😋 The state of the component will update based on activities in UI🥰 In Redux, each component of a web app can directly access the application’s state without sending down the props to child components🥳 Redux supports React UI to keep up-to-date with any API changes and to ensure that your React components behave as expected😍 What's your favourite frontend UI library?😇 #heartcentrictech #heartcentrictechmentoring #react #redux #frontend #frontenddevelopment #reactredux #reactui #reactframework #reactjs #frontenddev #frontendtuesday #fullstackdeveloper #fullstack #fullstackdev #softwaredevelopment #softwaredeveloper #femaledeveloper #femaledev https://www.instagram.com/p/CDvus5ejK6Q/?igshid=1kxj5wtnbg0px

[igmgurublr]

IgmGuru's React with Redux Certification Training will expertise you to build efficient React applications by mastering the concepts of React, Redux and React Native. In this training course, you will learn how to build simple components & integrate them into more complex design components.

To get certified with react with redux please explore here:-

https://www.igmguru.com/digital-marketing-programming/react-with-redux/

[mattn]

.NET Core 3.0 が gRPC をサポートした。

「.NET Core 3.0」正式版が登場。Windowsデスクトップアプリ開発可能、exeファイルを生成、マイクロサービス対応など － Publickey

最新記事10本 Kafka開発元のConfluentに聞いた。エンタープライズ市場への道筋、大手クラウドとの現在の関係について 最大32コアのAMD EPYCプロセッサを搭載、コストパフォーマンスを高...

https://ift.tt/2mg6uiV

これまで通り、dotnet コマンドで SDK テンプレートを使って色々なアプリケーションを作成できる様になっている。dotnet 3.0 から使える SDK テンプレートは以下の通り。

使用法: new [options] オプション:   -h, --help          Displays help for this command.   -l, --list          Lists templates containing the specified name. If no name is specified, lists all templates.   -n, --name          The name for the output being created. If no name is specified, the name of the current directory is used.   -o, --output        Location to place the generated output.   -i, --install       Installs a source or a template pack.   -u, --uninstall     Uninstalls a source or a template pack.   --nuget-source      Specifies a NuGet source to use during install.   --type              Filters templates based on available types. Predefined values are "project", "item" or "other".   --dry-run           Displays a summary of what would happen if the given command line were run if it would result in a template creation.   --force             Forces content to be generated even if it would change existing files.   -lang, --language   Filters templates based on language and specifies the language of the template to create.   --update-check      Check the currently installed template packs for updates.   --update-apply      Check the currently installed template packs for update, and install the updates. Templates                                         Short Name               Language          Tags                                  ---------------------------------------------------------------------------------------------------------------------------------- Console Application                               console                  [C#], F#, VB      Common/Console                        Class library                                     classlib                 [C#], F#, VB      Common/Library                        WPF Application                                   wpf                      [C#]              Common/WPF                            WPF Class library                                 wpflib                   [C#]              Common/WPF                            WPF Custom Control Library                        wpfcustomcontrollib      [C#]              Common/WPF                            WPF User Control Library                          wpfusercontrollib        [C#]              Common/WPF                            Windows Forms (WinForms) Application              winforms                 [C#]              Common/WinForms                       Windows Forms (WinForms) Class library            winformslib              [C#]              Common/WinForms                       Worker Service                                    worker                   [C#]              Common/Worker/Web                     Unit Test Project                                 mstest                   [C#], F#, VB      Test/MSTest                           NUnit 3 Test Project                              nunit                    [C#], F#, VB      Test/NUnit                            NUnit 3 Test Item                                 nunit-test               [C#], F#, VB      Test/NUnit                            xUnit Test Project                                xunit                    [C#], F#, VB      Test/xUnit                            Razor Component                                   razorcomponent           [C#]              Web/ASP.NET                           Razor Page                                        page                     [C#]              Web/ASP.NET                           MVC ViewImports                                   viewimports              [C#]              Web/ASP.NET                           MVC ViewStart                                     viewstart                [C#]              Web/ASP.NET                           Blazor Server App                                 blazorserver             [C#]              Web/Blazor                            ASP.NET Core Empty                                web                      [C#], F#          Web/Empty                             ASP.NET Core Web App (Model-View-Controller)      mvc                      [C#], F#          Web/MVC                               ASP.NET Core Web App                              webapp                   [C#]              Web/MVC/Razor Pages                   ASP.NET Core with Angular                         angular                  [C#]              Web/MVC/SPA                           ASP.NET Core with React.js                        react                    [C#]              Web/MVC/SPA                           ASP.NET Core with React.js and Redux              reactredux               [C#]              Web/MVC/SPA                           Razor Class Library                               razorclasslib            [C#]              Web/Razor/Library/Razor Class Library ASP.NET Core Web API                              webapi                   [C#], F#          Web/WebAPI                            ASP.NET Core gRPC Service                         grpc                     [C#]              Web/gRPC                              dotnet gitignore file                             gitignore                                  Config                                global.json file                                  globaljson                                 Config                                NuGet Config                                      nugetconfig                                Config                                Dotnet local tool manifest file                   tool-manifest                              Config                                Web Config                                        webconfig                                  Config                                Solution File                                     sln                                        Solution                              Protocol Buffer File                              proto                                      Web/gRPC                              Examples:     dotnet new mvc --auth Individual     dotnet new --help

WinForms や WPF を使ったアプリケーションの開発もできる。すばらしい。

dotnet 3.0 で WinForms なアプリ動いた。 pic.twitter.com/46TkkM47SP

— mattn (@mattn_jp) September 24, 2019

以下の手順でアプリケーションを作成すると、SayHello というメソッドを持った Greeter サービスが作られる。

$ dotnet new grpc -o mygrpc

proto ファイルは以下の通り。

syntax = "proto3"; option csharp_namespace = "mygrpc"; package Greet; // The greeting service definition. service Greeter {   // Sends a greeting   rpc SayHello (HelloRequest) returns (HelloReply); } // The request message containing the user's name. message HelloRequest {   string name = 1; } // The response message containing the greetings. message HelloReply {   string message = 1; }

dotnet コマンドを使ってそのまま実行できる。

試しにこの proto ファイルから Go のクライアントを作って接続してみる。以下のコマンドで Go のクライアントが作られる。

$ go get github.com/golang/protobuf/protoc-gen-go $ protoc --go_out=plugins=grpc:. greet.proto

以下がそのクライアントを使ったサンプル。dotnet のサーバ側はポート 5000 番で通常ソケットの HTTP、5001 番で HTTP/2 で通信可能。dotnet run コマンドでは HTTP 通信のサーバは起動しないので dotnet build でビルドし、bin 配下にある exe ファイルを実行する。この exe ファイル出力も今回の .NET Core 3.0 の新しい機能になる。

package main import (     "fmt"     "log"     pb "github.com/mattn/grpc-greeter/Greet"     "golang.org/x/net/context"     "google.golang.org/grpc" ) func main() {     conn, err := grpc.Dial("127.0.0.1:5000", grpc.WithInsecure())     if err != nil {         log.Fatal(err)     }     /*         opts = append(opts, grpc.WithTransportCredentials(creds))     */     defer conn.Close()     client := pb.NewGreeterClient(conn)     hello := &pb.HelloRequest{         Name: "おるみん",     }     result, err := client.SayHello(context.Background(), hello)     if err != nil {         log.Fatal(err)     }     fmt.Println(result.GetMessage()) }

実行すると以下の結果が得られる。

Hello おるみん

from Big Sky https://ift.tt/2msTsz2

[udemy-gift-coupon-blog]

React Hooks and Context (with React-Redux migration guide) ##FreeUdemyCourses ##UdemyOnlineCourse #Context #Guide #Hooks #Migration #React #ReactRedux React Hooks and Context (with React-Redux migration guide) React Hooks? React Hooks are the biggest fundamental change to React since React Fiber in Late 2017. Previous tutorials with Redux and older patterns are becoming obsolete. Stay competitive and learn the current and future version of React. I will show you how to migrate from React-Redux to React hooks without changing any of your Redux Code What this course will cover? We will begin with a detailed explanation about each of the major hooks. Then once we understand the hooks at a deep level we will begin coding. I will give a detailed explanation of React hooks then we will go over how to integrate React Hooks into existing React - Redux projects. We will build these hooks from scratch so you will get the best of both worlds. We will cover all the major hooks and I will show you how to write them in code. By the end of the tutorial you will have the building blocks necessary to build complex apps. Who this course is for: Beginner React students 👉 Activate Udemy Coupon 👈 Free Tutorials Udemy Review Real Discount Udemy Free Courses Udemy Coupon Udemy Francais Coupon Udemy gratuit Coursera and Edx ELearningFree Course Free Online Training Udemy Udemy Free Coupons Udemy Free Discount Coupons Udemy Online Course Udemy Online Training 100% FREE Udemy Discount Coupons https://www.couponudemy.com/blog/react-hooks-and-context-with-react-redux-migration-guide/

[suzanneshannon]

Understanding Immutability in JavaScript

If you haven’t worked with immutability in JavaScript before, you might find it easy to confuse it with assigning a variable to a new value, or reassignment. While it’s possible to reassign variables and values declared using let or var, you'll begin to run into issues when you try that with const.

Say we assign the value Kingsley to a variable called firstName:

let firstName = "Kingsley";

We can reassign a new value to the same variable,

firstName = "John";

This is possible because we used let. If we happen to use const instead like this:

const lastName = "Silas";

…we will get an error when we try to assign it to a new value;

lastName = "Doe" // TypeError: Assignment to constant variable.

That is not immutability.

An important concept you’ll hear working with a framework, like React, is that mutating states is a bad idea. The same applies to props. Yet, it is important to know that immutability is not a React concept. React happens to make use of the idea of immutability when working with things like state and props.

What the heck does that mean? That’s where we're going to pick things up.

Mutability is about sticking to the facts

Immutable data cannot change its structure or the data in it. It’s setting a value on a variable that cannot change, making that value a fact, or sort of like a source of truth — the same way a princess kisses a frog hoping it will turn into a handsome prince. Immutability says that frog will always be a frog.

Objects and arrays, on the other hand, allow mutation, meaning the data structure can be changed. Kissing either of those frogs may indeed result in the transformation of a prince if we tell it to.

Say we have a user object like this:

let user = { name: "James Doe", location: "Lagos" }

Next, let’s attempt to create a newUser object using those properties:

let newUser = user

Now let’s imagine the first user changes location. It will directly mutate the user object and affect the newUser as well:

user.location = "Abia" console.log(newUser.location) // "Abia"

This might not be what we want. You can see how this sort of reassignment could cause unintended consequences.

Working with immutable objects

We want to make sure that our object isn’t mutated. If we’re going to make use of a method, it has to return a new object. In essence, we need something called a pure function.

A pure function has two properties that make it unique:

The value it returns is dependent on the input passed. The returned value will not change as long as the inputs do not change.

It does not change things outside of its scope.

By using Object.assign(), we can create a function that does not mutate the object passed to it. This will generate a new object instead by copying the second and third parameters into the empty object passed as the first parameter. Then the new object is returned.

const updateLocation = (data, newLocation) => { return { Object.assign({}, data, { location: newLocation }) } }

updateLocation() is a pure function. If we pass in the first user object, it returns a new user object with a new value for the location.

Another way to go is using the Spread operator:

const updateLocation = (data, newLocation) => { return { ...data, location: newLocation } }

OK, so how does this all of this fit into React? Let’s get into that next.

Immutability in React

In a typical React application, the state is an object. (Redux makes use of an immutable object as the basis of an application’s store.) React’s reconciliation process determines if a component should re-render or if it needs a way to keep track of the changes.

In other words, if React can’t figure out that the state of a component has changed, then it will not not know to update the Virtual DOM.

Immutability, when enforced, makes it possible to keep track of those changes. This allows React to compare the old state if an object with it’s new state and re-render the component based on that difference.

This is why directly updating state in React is often discouraged:

this.state.username = "jamesdoe";

React will not be sure that the state has changed and is unable to re-render the component.

Immutable.js

Redux adheres to the principles of immutability. Its reducers are meant to be pure functions and, as such, they should not mutate the current state but return a new object based on the current state and action. We’d typically make use of the spread operator like we did earlier, yet it is possible to achieve the same using a library called Immutable.js.

While plain JavaScript can handle immutability, it’s possible to run into a handful of pitfalls along the way. Using Immutable.js guarantees immutability while providing a rich API that is big on performance. We won’t be going into all of the fine details of Immutability.js in this piece, but we will look at a quick example that demonstrates using it in a to-do application powered by React and Redux.

First, lets’ start by importing the modules we need and set up the Todo component while we’re at it.

const { List, Map } = Immutable; const { Provider, connect } = ReactRedux; const { createStore } = Redux;

If you are following along on your local machine. you’ll need to have these packages installed:

npm install redux react-redux immutable

The import statements will look like this.

import { List, Map } from "immutable"; import { Provider, connect } from "react-redux"; import { createStore } from "redux";

We can then go on to set up our Todo component with some markup:

const Todo = ({ todos, handleNewTodo }) => { const handleSubmit = event => { const text = event.target.value; if (event.keyCode === 13 && text.length > 0) { handleNewTodo(text); event.target.value = ""; } }; return ( <section className="section"> <div className="box field"> <label className="label">Todo</label> <div className="control"> <input type="text" className="input" placeholder="Add todo" onKeyDown={handleSubmit} /> </div> </div> <ul> {todos.map(item => ( <div key={item.get("id")} className="box"> {item.get("text")} </div> ))} </ul> </section> ); };

We’re using the handleSubmit() method to create new to-do items. For the purpose of this example, the user will only be create new to-do items and we only need one action for that:

const actions = { handleNewTodo(text) { return { type: "ADD_TODO", payload: { id: uuid.v4(), text } }; } };

The payload we’re creating contains the ID and the text of the to-do item. We can then go on to set up our reducer function and pass the action we created above to the reducer function:

const reducer = function(state = List(), action) { switch (action.type) { case "ADD_TODO": return state.push(Map(action.payload)); default: return state; } };

We’re going to make use of connect to create a container component so that we can plug into the store. Then we’ll need to pass in mapStateToProps() and mapDispatchToProps() functions to connect.

const mapStateToProps = state => { return { todos: state }; }; const mapDispatchToProps = dispatch => { return { handleNewTodo: text => dispatch(actions.handleNewTodo(text)) }; }; const store = createStore(reducer); const App = connect( mapStateToProps, mapDispatchToProps )(Todo); const rootElement = document.getElementById("root"); ReactDOM.render( <Provider store={store}> <App /> </Provider>, rootElement );

We’re making use of mapStateToProps() to supply the component with the store’s data. Then we’re using mapDispatchToProps() to make the action creators available as props to the component by binding the action to it.

In the reducer function, we make use of List from Immutable.js to create the initial state of the app.

const reducer = function(state = List(), action) { switch (action.type) { case "ADD_TODO": return state.push(Map(action.payload)); default: return state; } };

Think of List as a JavaScript array, which is why we can make use of the .push() method on state. The value used to update state is an object that goes on to say that Map can be recognized as an object. This way, there’s no need to use Object.assign() or the spread operator, as this guarantees that the current state cannot change. This looks a lot cleaner, especially if it turns out that the state is deeply nested — we do not need to have spread operators sprinkled all over

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Immutable states make it possible for code to quickly determine if a change has occurred. We do not need to do a recursive comparison on the data to determine if a change happened. That said, it’s important to mention that you might run into performance issues when working with large data structures — there’s a price that comes with copying large data objects.

But data needs to change because there’s otherwise no need for dynamic sites or applications. The important thing is how the data is changed. Immutability provides the right way to change the data (or state) of an application. This makes it possible to trace the state’s changes and determine what the parts of the application should re-render as a result of that change.

Learning about immutability the first time will be confusing. But you’ll become better as you bump into errors that pop up when the state is mutated. That’s often the clearest way to understand the need and benefits of immutability.

Further reading

Immutability in React and Redux

Immutablejs 101 - Maps and Lists

Using Immutable.js with Redux

The post Understanding Immutability in JavaScript appeared first on CSS-Tricks.

Understanding Immutability in JavaScript published first on https://deskbysnafu.tumblr.com/

[megaimaginea-blog]

It is quite easy to get confused about when to use React or a combination of React+Redux in building web applications. That is the exact premise of this blog, to clear the clutter surrounding React-Redux and provide you with the best approaches to build powerful applications with them.

[acegeraci]

Disclaimer: I'm writing these posts in multiple parts just so that it's better separated and so my conscience can bother me that I have to actually continue blogging. via Pocket

[geone-ws]

React Redux: Building Modern Web Apps with the ArcGIS JS API

https://blogs.esri.com/esri/arcgis/2017/09/08/arcgis-js-api-4-x-with-reactredux/

[shuying877]

Frontend Engineer (React/Redux) job at The Oddle Company Singapore

Looking to immerse yourself right at the heart of the start-up ecosystem? You are looking at the “next big thing”. Since our inception in 2014 as a B2B company, Oddle has been a leading force in offering the best-in-class enterprise software that transforms how restaurants participate in the online revolution and how people order food online.

With Oddle, you can be part of creating the most exciting user experiences for people all over the world. With more than 60 people across our offices in Singapore, Kuala Lumpur, Hong Kong and Taipei, we strive to be world-changing and continue blazing the trail – creating the most exhilarating food ordering consumer experiences and improving business decisions through data.

An intuitive and seamless food ordering system for our users is what we constantly seek to provide. We take convenience and engagement to a whole new level. As one of the world’s most transformative start-ups, we ensure that food ordering will never be the same again.

We have embarked on a journey where we can support more restaurants around the world with a scalable, robust system. By joining our Engineering Team, you get to work on a product that has revolutionized the way food & beverages establishments can grow their own delivery and takeout business. The team constantly tackles challenges in payments, notifications, mapping, and complex algorithms so as to deliver a simple, seamless experience for both businesses and consumers.

What you will do:

Work with Product and Design teams to conceptualize, build, test, and deploy new features

Build efficient, reusable well-designed and high-quality frontend systems that communicate with upstream backend services via APIs

Triage bugs and troubleshoot production issues

Improve code quality and increase unit and end-to-end test coverage

Mentor junior engineers when necessary

What you will need:

2+ years experience in Frontend Web application development and writing client-side JavaScript

Experience with modern JavaScript Libraries and technologies including React, Redux, ES6/7 and/or PostCSS. Experience with Angular is a plus.

Commanding grasp of HTML, CSS, and related web technologies

Awareness of cross-browser compatibility issues and client-side performance considerations

Strong communication skills, a positive attitude, good team player

Highly self driven with the ability to learn fast and adapt to changes in a fast paced and growth-focused startup

Possess good attitude towards continual learning and improving

If you are someone who appreciates efficient and reusable frontend systems, or turning mockups to realities, we want to speak to you!

From http://www.startupjobs.asia/job/32412-frontend-engineer-react-redux-it-job-at-the-oddle-company-singapore

from https://startupjobsasiablog.wordpress.com/2017/08/24/frontend-engineer-reactredux-job-at-the-oddle-company-singapore/

[moztimes]

WebExtensions is the really cool new standard for browser extensions that Mozilla and the Chrome team are collaborating on (as well as Opera, Edge ...

[macronimous]

Complete Guide on Unit and Integration Testing of React/Redux Connected Forms https://t.co/tv5Za4SrvP #React #ReactRedux #JavaScript https://t.co/ZXsaB3QDTB

Complete Guide on Unit and Integration Testing of React/Redux Connected Forms https://t.co/tv5Za4SrvP #React #ReactRedux #JavaScript pic.twitter.com/ZXsaB3QDTB

— Macronimous.com (@macronimous) August 24, 2020

from Twitter https://twitter.com/macronimous August 24, 2020 at 05:33PM via IFTTT

[udemy-gift-coupon-blog]

React-Redux (2018) : Refactor a React app into using Redux ##UdemyDiscount ##UdemyFrancais #app #React #ReactRedux #Redux #Refactor React-Redux (2018) : Refactor a React app into using Redux Are you a quick learner? Do you like getting down to the point straight away in your courses? Then this is the course for you! Guaranteed no "foo" and "bar" ... and no "to-do-list" app ;)In this course you will learn how to use the react-redux bindings.. We'll refactor and modify an IMDB style React DB Web Application to use Redux. My main goal with this course is to mix fun with teaching. This course uses the exact same web application that we're building in my course Master React the fun way! Create a Movie App from scratch. Therefore this is a perfect continuation of that course if You want to learn how react-redux work. Otherwise it is fully possible to just take this course. The starter files will contain the completed app from the other course. There's many tutorials and courses out there that are great but too complex and focus on a lot at the same time. My focus is to keep my teaching style fun and "down to earth". Hope you enjoy it too!Please make sure to download the STARTER FILES from the resources!PLEASE NOTE! We're using a free API key from The Movie Database in this course. This is a great API with a lot of information about Movies and TV Series. Please note that I can not guarantee that the API key i have provided for the course will work forever. Therefore I will not take responsibility for this. I strongly recommend you to get your own free API key from The Movie Database. Just register for a free account at The Movie Database and go to your account setting area and select API in the menu. There you can register for your own free API key.In this course you'll learn: - What is React-Redux bindings - Use the React-Redux bindings and redux for managing state in the app - Refactor an app from scratch for using Redux with React. - How to split Your code into Presentational and Container Components - Learn about Higher Order Functions - Use SessionStorage to persist state Who this course is for: Developers who want to learn Redux with React and React-Redux official library 👉 Activate Udemy Coupon 👈 Free Tutorials Udemy Review Real Discount Udemy Free Courses Udemy Coupon Udemy Francais Coupon Udemy gratuit Coursera and Edx ELearningFree Course Free Online Training Udemy Udemy Free Coupons Udemy Free Discount Coupons Udemy Online Course Udemy Online Training 100% FREE Udemy Discount Coupons https://www.couponudemy.com/blog/react-redux-2018-refactor-a-react-app-into-using-redux/