Unlike other languages, Scala does not have a keyword for enumerations. One way to implement them is by using case objects. For example:
1sealed trait OperatingSystem extends Product with Serializable
2
3object OperatingSystem {
4 …On this article we are going to install a rancher server on Ubuntu. Let’s start by getting the rancher image from docker hub:
1sudo docker run -d --restart=always -p 8080:8080 --name=rancher-server rancher/server
Go to http://ip-address:8080 …
This article shows a list of basic commands on MySQL and their corresponding versions for PostgreSQL.
MySQL
1$ mysql -u root -p
Postgres
1$ psql -h <host> -U <username> <database-name>
Try the following if …
This article describes some ideas on getting a successful software development process.
A successful project:
MySQL allows you to store credentials in a file called ~/.my.cnf. The contents can look like this:
[mysqldump]
user=myuser
password=mypassword
We have to modify the file permissions and give read/write permissions to the owner only:
1chmod 600 …The following examples use random generated numbers initialized with a static seed. Never do it like this.
Run the following examples multiple times to understand why it is important to have a good seed.
PHP version:
1#!/usr/bin/php
2
3<?php
4 …It’s pretty simple:
1sudo apt-get install mysql-server
This is a useful and simple snippet:
1import java.sql.Connection;
2import java.sql.DriverManager;
3public class Test { …The Play Framework is built upon Akka actors, but does everything so that you don’t really need to use them. Despite this, actors are easy to integrate with Play, precisely because it is built on them (there is already an actor system for you …
This article contains a series of curated inspirational videos from different users.
This article contains a series of inspirational videos from user UKspreadbetting which I consider very important.