Tiempo de lectura: 3 minutos Reading time: 3 minutes React Native works with components. What does this mean? It means that each element represents an object with its view, properties, and methods. An object is a black box where you input an entry and get an output, regardless of its internal contents. I’m going to explain how to create a … Read more
Tiempo de lectura: 2 minutos Reading time: 2 minutes Photo by John Tekeridis on Pexel We are going to create a group called grupoDevCodeLight. To do this, we will use groupadd as shown below: sudo groupadd grupoDevCodeLight If prompted, enter the administrator (root) password. Now, we will verify that the group has been created successfully using the following command: sudo … Read more
Tiempo de lectura: 3 minutos Reading Time: 3 minutes The first thing we need to do is create an account on Oracle Cloud as indicated in this post. Once created, go to Launch Resources and click on Create a VM instance. Now fill in the fields for your instance: Enter the name: Choose the image, I recommend Ubuntu 18. Click … Read more
Tiempo de lectura: 2 minutos Reading Time: 2 minutes Pixabay photo at Pexel It’s very simple by following the commands as indicated below: Once the terminal is open, we will write the command shown below. In it, we can see that the user will be named DevCodeLight and their base directory will be usuarioDevCodeLight. The directory will be located within … Read more
Tiempo de lectura: < 1 minuto Reading time: < 1 minute If we have enough disk space and still encounter errors like No space left on device or Write failed. The first thing we need to do is check if there is space on the machine using the command: df -a As we can see, there is 30% available space and ... Read more
Tiempo de lectura: < 1 minuto Reading time: < 1 minute If we want to retrieve data from a remote server, we can use the following code: var myHeaders = new Headers(); myHeaders.append(“Content-Type”, “application/x-www-form-urlencoded”); var requestOptions = { method: ‘GET’, headers: myHeaders }; fetch(“https://www.miweb.com/getPerson”, requestOptions) .then(response => response.json()) .then((responseJson) => { alert(responseJson); }) .catch(error => console.log(error)); First, we create the headers … Read more
Tiempo de lectura: 2 minutos Reading time: 2 minutes In order to communicate with our remote server (backend) using React Native, we need to make an asynchronous call. //Headers, if we want to add a token, we have to include it in these headers. var myHeaders = new Headers(); myHeaders.append(“Content-Type”, “application/x-www-form-urlencoded”); javascript Copy code //Parameters to send var urlencoded = … Read more
Tiempo de lectura: < 1 minuto Reading time: < 1 minute If we want to add dependencies in React or React Native and also have them saved in the package.json file, we will do the following: npm install library_name –save We use npm install to invoke the npm installer, followed by the library we want to install, and add –save. This … Read more
Tiempo de lectura: < 1 minuto Reading time: < 1 minute To solve the error “Cannot load file C:\Users\user\AppData\Roaming\npm\expo.ps1 because running scripts is disabled on this system.” First, run PowerShell as administrator (right-click, run as administrator): Once it’s open, type: Set-ExecutionPolicy Unrestricted Now, accept: And it will allow us to execute:
Tiempo de lectura: < 1 minuto Reading time: < 1 minute If we want to delete different tables that start with the same name or name index, for example: videos_1 videos_2 videos_3 We can use this script: SELECT CONCAT(‘DROP TABLE ‘, table_name, ‘;’) statement FROM information_schema.tables WHERE table_name LIKE ‘videos_%’; This script will return the code that we need to execute: … Read more
