This page will help you install and build your first React Native app. If you already have React Native installed, you can skip ahead to the Tutorial. If you are new to mobile development, the easiest way to get started is with Expo CLI.Expo is a set of tools built around React Native and, while it has many features, the most relevant feature for us right now is that it can get you writing a. Build great experiences with Windows: desktop applications, UWP apps and games and more. Start developing for Windows. Build experiences that reach your users everywhere. Develop for specific devices. Windows-based PCs. Build desktop applications that target PCs running Windows by using platforms including the Universal Windows Platform (UWP.
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Start Developing iOS Apps (Swift) is the perfect starting point for learning to create apps that run on iPhone and iPad. View this set of incremental lessons as a guided introduction to building your first app—including the tools, major concepts, and best practices that will ease your path.
Each lesson contains a tutorial and the conceptual information you need to complete it. The lessons build on each other, walking you through a step-by-step process of creating a simple, real-world iOS app.
As you make your way through the lessons and build the app, you’ll learn about concepts in iOS app development, gain a deeper understanding of the Swift programming language, and familiarize yourself with the many valuable features of Xcode, Apple’s integrated development environment (IDE).
Prerequisites
In these lessons, it is assumed that you are familiar with the Swift programming language. You do not need to be a Swift master to complete the lessons, but you will get more out of the lessons if you can comfortably read and understand Swift code.
If you are not yet comfortable with Swift, complete the Learn to Code exercises in the Swift Playgrounds app. Alternatively, you can work through A Swift Tour from The Swift Programming Language (Swift 3). Both give you a solid foundation in the Swift programming language.
About the Lessons
In these lessons, you’ll be building a simple meal-tracking app called FoodTracker. This app shows a list of meals, including a meal name, rating, and photo. A user can add, remove, or edit a meal. To add a new meal or edit an existing one, users navigate to a different screen where they can specify a name, rating, and photo for a particular meal.
The lessons are each accompanied by an Xcode project file that shows an example of how your code and interface should look at the end of the lesson. After you go through a lesson, you can download the project and check your work against it.
If you need to refer to the concepts you’ve learned throughout the lessons, use the glossary to refresh your memory. Glossary terms are linked throughout the lessons.
Get the Tools
To develop iOS apps using the latest technologies described in these lessons, you need a Mac computer (macOS 10.11.5 or later) running the latest version of Xcode. Xcode includes all the features you need to design, develop, and debug an app. Xcode also contains the iOS SDK, which extends Xcode to include the tools, compilers, and frameworks you need specifically for iOS development.
Download the latest version of Xcode on your Mac free from the App Store.
To download the latest version of Xcode
Important
The lessons were written using Xcode 8.1, iOS SDK 10, and Swift 3. Try to use these versions while working on the tutorials. If you are using a different version, your screen may look different than what is shown in the screenshots. You may also need to make changes to your code to get it to compile.
Let’s get started!
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Visual Studio allows you to easily create a Node.js project and experience IntelliSense and other built-in features that support Node.js. In this tutorial for Visual Studio, you create a Node.js web application project from a Visual Studio template. Then, you create a simple app using React.
In this tutorial, you learn how to:
Before you begin
Here's a quick FAQ to introduce you to some key concepts.
What is Node.js?
https://heavenlygaming710.weebly.com/hauppauge-hd-pvr-software-mac.html. Node.js is a server-side JavaScript runtime environment that executes JavaScript server-side.
What is npm?
npm is the default package manager for the Node.js. The package manager makes it easier for programmers to publish and share source code of Node.js libraries and is designed to simplify installation, updating, and uninstallation of libraries.
What is React?
React is a front-end framework to create a UI.
What is JSX?
JSX is a JavaScript syntax extension, typically used with React to describe UI elements. JSX code must be transpiled to plain JavaScript before it can run in a browser.
What is webpack?
webpack bundles JavaScript files so they can run in a browser. It can also transform or package other resources and assets. It is often used to specify a compiler, such as Babel or TypeScript, to transpile JSX or TypeScript code to plain JavaScript.
Prerequisites
Create a project
First, create a Node.js web application project.
Add npm packages
This app requires a number of npm modules to run correctly.
Add project files
In these steps, you add four new files to your project.
For this simple app, you add the new project files in the project root. (In most apps, you typically add the files to subfolders and adjust relative path references accordingly.)
Add app code
Configure webpack and TypeScript compiler options
In the previous steps, you added webpack-config.js to the project. Next, you add webpack configuration code. You will add a simple webpack configuration that specifies an input file (app.tsx) and an output file (app-bundle.js) for bundling and transpiling JSX to plain JavaScript. For transpiling, you also configure some TypeScript compiler options. This code is a basic configuration that is intended as an introduction to webpack and the TypeScript compiler.
Transpile the JSX
Each time you make changes to app.tsx, you must rerun the webpack command. To automate this step, add a build script to transpile the JSX.
Add a build script to transpile the JSX
Starting in Visual Studio 2019, a build script is required. Instead of transpiling JSX at the command line (as shown in the preceding section), you can transpile JSX when building from Visual Studio.
Run the app
Set a breakpoint and run the app
Set and hit a breakpoint in the client-side React code
In the preceding section, you attached the debugger to server-side Node.js code. To attach the debugger from Visual Studio and hit breakpoints in client-side React code, the debugger needs help to identify the correct process. Here is one way to enable this.
Run React AppPrepare the browser for debugging
For this scenario, use either Microsoft Edge (Chromium), currently named Microsoft Edge Beta in the IDE, or Chrome.
Attach the debugger to client-side scriptCreate React App Missing Script Start![]()
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