With the development of computer technology, the demand for local desktop applications is also getting higher and higher. For this need, building local desktop applications using SQLite and React in Go language is a good choice. This article explores best practices for using these technologies.

1. Using SQLite in Go language

SQLite is a lightweight relational database that is highly reliable, efficient and scalable. Go language is a lightweight, efficient, easy to develop and maintain language. The combination of these two technologies can meet the needs of most client applications.

The steps to use SQLite in Go language are as follows:

1. Import library

In Go language, use the go-sqlite3 package to operate the SQLite database. This package is already included in the Go standard library, so there is no need to import it. Just use the following statement in the code:

import "database/sql"

2. Open the database

You can use sql to open the SQLite database. Open() function. This function accepts two parameters: driver name and data source name. The driver name used in Go language is sqlite3, and the data source name is a string connected to the database. The following is a sample code to open a SQLite database:

db, err := sql.Open("sqlite3", "test.db")
if err != nil {

log.Fatal(err)

}
defer db.Close()

3. Query database

After opening the SQLite database, you can use the db.Query() function to execute the query statement. Here is a simple example:

rows, err := db.Query("SELECT name, email FROM users;")
if err != nil {

log.Fatal(err)

}
defer rows.Close()

for rows.Next() {

var name string var email string err = rows.Scan(&name, &email) if err != nil { log.Fatal(err) } fmt.Printf("%s %s

", name, email)
}

2. Use React to build the interface

React is a JavaScript library for building user interfaces. It was developed by Facebook and has become a popular technology choice. React uses a component-based development approach to improve code reusability and maintainability sex.

The steps to build a local desktop application using React are as follows:

1. Install Node.js

Node.js is a Chrome-based JavaScript running environment, capable of running JavaScript code on the server side. After installing Node.js, you can use npm (Node.js package manager) to install and manage the packages and dependencies required for React applications.

2. Create React Application

To create a React application, you can use the create-react-app tool. This tool can automatically generate a basic React application structure. Use the following command to create the application ：

npx create-react-app my-app
cd my-app

3. Developing React components

To build the interface, development is required React components. React components are reusable modules used to build user interfaces. Here is a simple component example:

function Welcome(props) {
return

Hello, { props.name}

ReactDOM.render(
,
document.getElementById('root')
);

The above code will generate a title containing the text "Hello, World".

4. Packaging the application

Complete React application After the program is developed, it needs to be packaged into an executable application. You can use the Electron framework to build local desktop applications. Electron is an open source framework for building cross-platform desktop applications using Node.js and Chromium.

Use Electron to package a React application into a cross-platform desktop application. Here is a simple Electron application example:

const { app, BrowserWindow } = require('electron')

function createWindow () {
const win = new BrowserWindow({

width: 800, height: 600, webPreferences: { nodeIntegration: true }

})

win.loadFile('index.html')
}

app.whenReady().then(() => {
createWindow()

app.on('activate', () => {

if (BrowserWindow.getAllWindows().length === 0) { createWindow() }

})
})

Among them, createWindow() Function is used to create a new Electron window.

Conclusion

Integrating SQLite in Go language and using React to build local desktop applications can achieve simple, efficient, and maintainable purposes. Developers can follow the above best practices to deepen their understanding and application of these technologies.

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