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React News Friday, June 22

FREE! Advanced React.js Lectures – Ryan Florence – Medium

  • Advanced React.jsLectures – Weve been teaching our Advanced React.js patterns workshop for well over two years now.
  • Weve done our best to give vocabulary to these patterns and help people understand when to use them.
  • Earlier this year we released our Advanced React.js online course that took all the patterns from the workshop and put them online.
  • Today, were making all of the Advanced React.js lectures free!
  • We encourage you to purchase the course to get access to the exercises and solution videos, thats where youll really level up.

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FREE! Advanced React.js Lectures – Ryan Florence – Medium

A simple data analysis in python

  • After printing the mean values for the rows and columns, the next part of this program will plot those values in a two dimensional axis.
  • After plotting the graph, the last part of this program will sort the calculated mean values in ascending order and print those values as the output.
  • Code from line 24 to 38 will first create a list for the mean values and then start comparing the values to sort all the numbers in ascending order and then print the sorted mean row values as the output.
  • Code from line 40 to 54 will do the same sorting but for the mean column values, and print the sorted values as the output, as well.
  • Code for this program – – import numpy as np – import matplotlib.pyplot as plt – x = np.array([[15, 18, 15], [21, 12, 6],[35, 14, 18]]) – print(Original of each column:) – print of each for the mean values of row and row values in ascending order:) – def selectionSort(nlist):…

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A simple data analysis in python

Create a website blocker with Python

  • Our application will use file manipulation methods of Python to open this file and put these lines of code in this file.
  • with open(hosts_file,’r+’) as file: – content=file.read() – – Now we will iterate over the websites list and check whether the websites are present in our host file.
  • So now we have to produce a Python code that removes the list of blocked social media websites from the hosts file so that we can enjoy using our favorite social media websites.
  • file.seek(0) – for line in content: – if not any(website in line for website in website_list): – file.write(line) – – And then we truncate the file to avoid for loop entering multiple blocks of text in the file.
  • Source code: – – import time – from datetime import datetime as True: – if dt.now() with open(hosts_file,’r+’) as file: – content=file.read() – for website in website_list: – if website in content: – pass – else: – file.write(local+ + website+\n) – else: – with open(hosts_file,’r+’) as file: – content=file.readlines() -…

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Create a website blocker with Python

Fetching Data Using Web API In React

  • In this article, I’m going to display (Fetching) data using ASP.net web API in React JS.
  • And in the below project templates list select Add folders and core references for: e.g. Web Form, MVC & Web API etc.
  • For this error we need to add some code in web.config of web API project – – Now we can enable access web API from front end inside React .
  • Simply create a BabelBundle containing any number of JSX or regular JavaScript files: (source: react) – – Add main bundle as per mentioned above in to _Layout.cshtml page – – Now Run the Web API project and after that run the ASP.NET MVC + React Application.
  • And finally run both applications and display expected result from http get request with ASP.NET MVC + React JS + AXIOS.

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Fetching Data Using Web API In React

Complex App Logic With Redux And Redux Saga: Write an Authentication Monitor

  • function* generator() { – yield 1 – yield 2 – yield 3 – }const gen = generator()gen.next() – // { value: 1 }gen.next() – // { value: 2 }gen.next() – // { value: 3, done: true }The generator code should be straightforward except the yield keyword.
  • function* fibGenerator(limit) { – let current = 0 – let next = 1 – let temp for (let i = 0; i limit; i++) { – temp = current – current = next – next = temp + next – yield current – } – }const fib = fibGenerator(3)fib.next() -…
  • const ignoreActionTypes = [‘TOKEN_REFRESH’]function monitorableAction(action) { – return action.type – .
  • function* monitor(monitoredAction) { – console.log(‘started monitoring’, monitoredAction.type) – const { fail } = yield race({ – success: fail: }) …There is no need to do anything if the process succeeds so there is only a check for a failure which is a result of an invalid token.
  • …if (fail fail.payload fail.payload.code === 401) { – console.log(‘detected 401, refreshing token’) – yield put(userTokenRefreshRequest()) const { success } = yield race({ – success: fail: }) if (success) { – console.log(‘token refreshed, retrying’, monitoredAction.type) – yield put(monitoredAction) – } else { – console.log(‘token refresh failed, logging out user’) – yield…

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Complex App Logic With Redux And Redux Saga: Write an Authentication Monitor

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Recent blog posts – Evontech Blog

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Recent blog posts – Evontech Blog

CrateDB: Real-time SQL Database for Machine Data & IoT

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CrateDB: Real-time SQL Database for Machine Data & IoT | Crate.io

Sunsetting React Native – Airbnb Engineering & Data Science – Medium

  • This is the fourth in a series of blog posts in which we outline our experience with React Native and what is next for mobile at Airbnb.
  • Although many teams relied on React Native and had planned on using it for the foreseeable future, we were ultimately unable to meet our original goals.
  • Failing to Reach OurGoals – Move Faster – When React Native worked as intended, engineers were able to move at an unparalleled speed.
  • It is not allbad – Although we werent able to achieve our goals with React Native, engineers who used React Native generally had a positive experience.
  • Every company that uses React Native will have an experience that is a unique function of their team composition, existing app, product requirements, and maturity of React Native.

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Sunsetting React Native – Airbnb Engineering & Data Science – Medium

Top React Courses

Modern React with Redux (86,762 students enrolled)

By Stephen Grider
  • Build amazing single page applications with React JS and Redux
  • Master fundamental concepts behind structuring Redux applications
  • Realize the power of building composable components
  • Be the engineer who explains how Redux works to everyone else, because you know the fundamentals so well
  • Become fluent in the toolchain supporting React, including NPM, Webpack, Babel, and ES6/ES2015 Javascript syntax

Learn more.


The Complete React Native and Redux Course (53,888 students enrolled)

By Stephen Grider
  • Create real-world native apps using React Native
  • Make truly reusable components that look great
  • Understand the terminology and concepts of Redux
  • Prototype and deploy your own applications to the Apple and Google Play Stores
  • Get up to speed with React design principles and methodologies
  • Discover mobile design patterns used by experienced engineers

Learn more.


Advanced React and Redux (35,016 students enrolled)

By Stephen Grider
  • Build a scaleable API with authentication using Express, Mongo, and Passport
  • Learn the differences between cookie-based and token-based authentication
  • Figure out what a Higher Order Component and how to use it to write dramatically less code
  • Write Redux middleware from scratch to uncover what is happening behind the scenes with Redux
  • Set up your own testing environment with Mocha and Chai
  • Realize the power of building composable components

Learn more.


React Redux React-Router: From Beginner to Paid Professional (11,715 students enrolled)

By Leonardo Daniel
  • Building your amazing web applications with React JS and Redux
  • Getting a high-paying job as a front-end developer
  • Getting experience through doing many exercises. Re-enforcing your knowledge of ES6, advanced JavaScript, Redux, React through attempting a lot of quizzes. Practice makes perfect.
  • Becoming familiar with the technologies supporting React, including NPM, Webpack, Babel, and ES6/ES2015.

Learn more.


React Native: Advanced Concepts (16,058 students enrolled)

By Stephen Grider
  • Make compelling applications using expert-level features of React Native
  • Create amazingly smooth and performant animations
  • Build new React Native apps with Expo
  • Understand the latest Navigation options for new React Native apps
  • Add logic to your Firebase backend with Google Cloud Functions
  • Update your users with cross platform Push Notifications
  • Handle your users going offline with Redux Persist

Learn more.


React JS and Redux - Mastering Web Apps (54,299 students enrolled)

By David Katz
  • Develop entire React JS and Redux applications from scratch.
  • Build applications that deal with APIs and web requests.
  • Discuss ES6 and advanced JavaScript.
  • Create web apps with full authentication, and real-time database.

Learn more.


React basic in just 1 hour (22,331 students enrolled)

By Leo Trieu
  • Taste of how to build your very first React component.
  • How to handle event in components.
  • Understand two key concepts of React: State and Props.
  • How to reuse and nest components.
  • How to transfer data between Parent, Child components.
  • How to work with Array, Form

Learn more.


Meteor and React for Realtime Apps (7,889 students enrolled)

By Stephen Grider
  • Create interactive web apps amazingly fast
  • Build amazing single page applications with Meteor and React JS
  • Master fundamental concepts behind structuring Meteor applications
  • Learn the true purpose of Meteor in a modern application
  • Be the engineer who explains how Meteor works to everyone else, because you know the fundamentals so well
  • Build and prototype interesting personal projects in a weekend

Learn more.


GraphQL with React: The Complete Developers Guide (14,683 students enrolled)

By Stephen Grider
  • Build amazing single page applications with React JS and GraphQL
  • Master fundamental concepts behind structuring GraphQL servers
  • Realize the power of building flexible data schemas
  • Be the engineer who explains how GraphQL works to everyone else, because you know the fundamentals so well
  • Become fluent in the ecosystem supporting GraphQL, including the differences between Apollo and Relay

Learn more.


Essentials in JavaScript ES6 - A Fun and Clear Introduction (40,155 students enrolled)

By David Katz
  • Create ES6 applications from the ground up.
  • Use the terminal/command-line application and a code editor to code.
  • Look at ES6 code and understand keyword and concepts.
  • Create live development servers with Webpack.

Learn more.


The Full JavaScript & ES6 Tutorial - (including ES7 & React) (55,808 students enrolled)

By David Katz
  • Code in JavaScript like a pro.
  • Code in es6 comfortably, using all the new features.
  • Build es6 projects from the ground up using tools like webpack and babel.
  • Create a basic ReactJS application from scratch.

Learn more.