DevCodeLight 
Tiempo de lectura: 2 minutosThe SOLID principles are a set of five software design principles that promote the creation of clean, maintainable, and scalable code. These principles were introduced by Robert C. Martin in his book “Agile Software Development, Principles, Patterns, and Practices” and are fundamental to object-oriented software engineering: Single Responsibility Principle (SRP): This principle states that a … Read more
Tiempo de lectura: 2 minutosObject-Oriented Software Engineering is an approach to software development based on the concept of objects, which are entities that represent data and behaviors. This tutorial will guide you through the fundamentals of object-oriented software engineering and how to apply them in your software development projects. Fundamentals of Object-Oriented Programming (OOP) Object-Oriented Programming (OOP) is a … Read more
Tiempo de lectura: 2 minutosToday we are going to create a custom widget called CustomDropdownButton, which is used to display a DropdownButton with selectable options. The widget accepts three parameters: import ‘package:flutter/material.dart’; import ‘../comun/Option.dart’; class CustomDropdownButton extends StatefulWidget { final Option selectedOption; final List options; final void Function(Option?) onChanged; CustomDropdownButton({ required this.selectedOption, required this.options, required this.onChanged, }); @override _CustomDropdownButtonState … Read more
Tiempo de lectura: < 1 minutoGood morning, today I show you a brief example of how it would be: <!DOCTYPE html> <html lang=”en”> <head> <meta charset=”UTF-8″> <meta name=”viewport” content=”width=device-width, initial-scale=1.0″> <link rel=”stylesheet” href=”styles.css”> <title>Numbered List</title> </head> <body> <ul class=”numbered-list”> <li>Item 1</li> <li>Item 2</li> <li>Item 3</li> <li>Item 4</li> </ul> </body> </html> By default, as we already know, this returns bullets. If … Read more
Tiempo de lectura: 4 minutosToday we are going to learn how we can implement Google authentication in our Flutter app. Let’s go to Google Cloud Platform (https://cloud.google.com/) and click on Console Now select our project (if we already have it created by Firebase) or create a new one. Now search for: oauth clients Choose External: Fill in the application … Read more
Tiempo de lectura: 2 minutosToday we’re going to learn how we can verify a token generated with Google Sign-In from a front-end client by sending it to the back-end. In this case, we’ll be using Python. Of course, here’s a step-by-step tutorial for validating a Google Sign-In token in Python using the google-auth library. Step 1: Install the google-auth … Read more
Tiempo de lectura: 2 minutosLet’s create a RadioGroup component composed of RadioButtons. First, we create the RadioGroup component. import React, { useState } from ‘react’; import RadioGroup from ‘./RadioGroup’; // Adjust the path according to your file structure import RadioButton from ‘./RadioButton’; // Adjust the path according to your file structure const YourComponent = () => { const [gender, … Read more
Tiempo de lectura: < 1 minutoToday we are going to learn how to execute a Flutter application on our Android device remotely. We open our console with the Flutter project and enter: flutter devices And the following appears: Now let’s activate ADB using Wifi, for this we need our device to be connected to the same network as our PC … Read more
Tiempo de lectura: 1 minutoToday we are going to learn how to create a Widget that can contain other Widgets and be used as a background in Flutter. The first thing we are going to do is create our Widget which we will call CustomCard.dart It contains this code: import ‘package:flutter/material.dart’; class CustomCard extends StatelessWidget { final Widget? child; … Read more
Tiempo de lectura: < 1 minutoToday we are going to learn how we can load an Excel XLS file using React. The first thing we have to do is install the xlsx library: npm install xlsx Once installed, we create our loading function XLSLoader: import * as XLSX from ‘xlsx’; async function loadExcelData() { const response = await fetch(‘our_path_to_xls.xls’); const … Read more
