- Python is the fastest-growing programming language, and by 2019 will significantly outstrip other languages in terms of active developers.
- That’s the prediction of programming QA hub Stack Overflow, based on the ballooning number of developers viewing questions about Python on its site.
- “The term ‘fastest-growing’ can be hard to define precisely, but we make the case that Python has a solid claim to being the fastest-growing major programming language,” says Stack Overflow data scientist David Robinson in a blog post.
- Image: Stack Overflow – In the five years to June 2017, Python has gone from the least to the most popular of the top six programming languages, with a 2.5x increase in views of Python questions.
- Python won’t just stay at the top, according to a predictive model put together by Stack Overflow’s Robinson, but will decisively consolidate its lead over other languages over the next two years.
One language will significantly outstrip others in terms of active developers, according to a prediction by programming Q&A hub Stack Overflow.
- React Router Tutorial Example From Scratch is today’s main topic.
- Routing to front end application is a very important concept and today I am going to show you how to use react router v4 in our React.js application.
- Create one folder inside root directory called app and in that make one file called main.js – – The further step, make one file inside root called webpack.config.js and copy the following code into it.
- There are two types of router object.
- Every router creates history object to keep track of the current location of the page.
React Router Tutorial Example From Scratch. We are using React Router version 4. react-router v4. A basic example of react-router in React.js project.
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- This is the tutorial you’ve been looking for to take your React and Redux skills to the next level.
- This course wastes no time diving right into interesting topics, and teaches you the core knowledge you need to deeply understand and build React components and structure applications with Redux.
- Mastering React and Redux can get you a position in web development or help you build that personal project you’ve been dreaming of.
- There are dozens of great tutorials online for React and Redux, but none of them teach the challenging, core features of these two fantastic libraries.
- I have built the course that I would have wanted to take when I was learning React and Redux.
Detailed walkthroughs on advanced React and Redux concepts – Authentication, Testing, Middlewares, HOC’s, and Deployment
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- React components have several “lifecycle methods” that allow us to execute actions (e.g.: fetching data from a server) at particular times.
- There are three particular stages in the lifecycle of a component, that are important for our lifecycle methods, which I will explain: – – When React creates an instance of a component and inserts it into the DOM (mounting), the following methods are called: – – If props or state…
- That process is called unmounting and means that the following method is called: – – I hope I could give you a short overview of the life of a React component and the calling order of lifecycle methods.
- Some people suggest to use it for doing some configuration of the root component that you can only do at runtime (e.g.: setting up a Firebase connection) – – Whenever this method is called, React has already rendered our component and put it into the DOM.
- This means, it could be possible that the method returns false but React still decides to re-render the component.
Use React lifecycle methods to perform actions on mount, update and unmount of a component. Learn more about e.g. componentDidMount and when to use it
Continue reading “How to use React Lifecycle Methods » Andreas Reiterer”
- It makes creating forms in React Native easy by simply having to define a model for that form and you’re set!
- Snack will automatically pull that in for us.Tip: I find that scanning the QR code from the Expo app on my device gives the best development experience.If you prefer to do this outside of Snack make sure you install tcomb-form-native via npm or yarn.What We’re BuildingWe’ll be building a sign up…
- First we need to get the Form component (line 6) then we need to render the form and pass our model to it as the type (line 19).
- We create an object, add a key named “fields” (since we’re modifying the fields), add a key to this object that aligns with the key in our model (“terms”), and then inside that object we set the new label.Code is easier to understand.Then pass those options to the Form componentLet’s…
- Just about everything in the default form is customizable.As you can see tcomb-form-native makes building forms quick and easy but also gives you the flexibility you need to create forms the give users the necessary info and fit with the rest of your app (unless I’m designing of course).
If you’re building a React Native app it’s almost a guarantee that you’ll have to build at least one form. The reality is you’ll probably build quite a few (sign in, sign up, edit profile, etc.) Yeah…
Continue reading “Easily Build Forms in React Native – React Native Development – Medium”
- _* Brand New Course Launched in June 2017*_ – – _* LEARN HOW TO BUILD AN APP IN LESS THAN ONE HOUR*_ – – React Native is taking over the mobile market, building Native paced mobile applications, with the principle of learn once implement everywhere.
- Subscribe and up skill yourself in the Framework used by companies such as Facebook, Uber, AirBnb to build their mobile apps.
- We’ll be using diagrams and flowcharts throughout our course to pictorially explain what is happening at each step and how this fits into the bigger picture of React Native, we leave no stone unturned when going over core theories of this popular and fast framework.
- We learn about Redux middleware, nothing is explained using jargon and everything is taught in a relatable and simple terms, making it extremely easy to grasp all these new concepts – – This course not only explains how React Native operates but, we work from the ground up, from fundamentals…
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- Come learn how to make your React apps lightning fast!
- Also, profiling and debugging performance issues can seem like an overwhelming topic to learn.
- In this session, we’ll cover the usual suspects of performance issues, from the basics of using the correct build, to the fundamentals of immutable data, to higher-level tools like Perf, shouldComponentUpdate, PureComponent, and memoizing computed props in Redux.
- We will both cover the concepts and walk through examples step-by-step so that by the end of this session you will feel like a React Speed Racer.
- You’ll get the most out of this session if you’re at least comfortable with React and ES6 syntax.
App loading and run-time affect your bottom line. Fancy features aren’t worth anything if users leave the app out of frustration. Every second counts! React is super fast, but you could be shooting yourself in the foot with design decisions. Come learn how to make your React apps lightning fast!
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