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:
#!/usr/bin/php <?php srand(2); echo rand(0,10)."\n"; echo rand(0,5)."\n"; echo rand(0,4)."\n"; echo rand(0,6)."\n"; Java version:
import java.util.*; /** * @see https://docs.oracle.com/javase/7/docs/api/java/util/Random.html */ public class RandomDemo { public static void main( String args[] ){ Random r = new Random(2); System.
How to install MySQL server in Ubuntu It’s pretty simple:
sudo apt-get install mysql-server How to connect to MySQL using Java This is a useful and simple snippet:
import java.sql.Connection; import java.sql.DriverManager; public class Test { public static void main(String[] args) { try { Class.forName("com.mysql.jdbc.Driver"); Connection c = DriverManager.getConnection( "jdbc:mysql://localhost/?user=root&password="); c.close(); System.out.println("Success"); } catch (Exception e) { e.printStackTrace(); } } } How to connect to MySQL using C# Go to http://www.
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 to use)
A few exceptions are:
websockets handling (doing that using actors is a breeze) scheduling tasks for doing daily or weekly jobs Akka actors use messages to communicate between among them.
This article contains a series of curated inspirational videos from different users.
“It will make you rich”. What poor people don’t know about making money
This article contains a series of inspirational videos from user UKspreadbetting which I consider very important.
Why trading forex is so difficult Is trading the road to great rewards and richness? Trade entries and exits Institutional traders versus private traders
This article lists a curated list of Java libraries that I have used over the years for different projects. They are all well documented, and for most of them, plenty of examples can be found on the web.
Apache Commons Email Commons Email
Commons Email aims to provide a API for sending email. It is built on top of the Java Mail API, which it aims to simplify.
User Guide Apache Commons StringUtils <dependency> <groupId>org.
Two main approaches for doing this, the second one being for me the most appropriate.
Check values using regular if conditions:
if (opt1.isDefined && opt2.isDefined && opt3.isDefined) // do something Check values using match:
(opt1, opt2, opt3) match { case(Some(val1), Some(val2), Some(val3)) => ??? case _ => ??? }
This article goes through the process of creating and validating JWT’s (JSON web tokens) using Scala.
Our implementation uses the awesome io.jsonwebtoken library, and can be added to a sbt project like this:
libraryDependencies ++= Seq("io.jsonwebtoken" % "jjwt" % "0.9.1") Creating a token We are going to use Scala’s apply/unapply functions for this implementation. This will allow us to use matchers for checking JWT’s.
import java.time.Instant import java.util.{Date, UUID} import io.
This article shows how to make remote requests to services using Scala and the Play-Framework. It documents some recommended features that can improve the reliability of the request.
Setup Make sure you add the following dependency to build.sbt
libraryDependencies += ws GET request GET request to a remote service
import scala.concurrent.Future import play.api.http.Status._ import play.api.libs.ws.WSClient import play.api.libs.json.{JsSuccess, Json} case class UnexpectedResponseStatus(message: String) extends Exception(message) case class InvalidServiceResponse(message: String) extends Exception(message) class SomeClass @Inject()( ws: WSClient ) { def getFromRemoteService(url: String): Future[Option[MyClass]] = { ws.
The idea behind migrating to hugo is to avoid having to deal with server and certificate updates, backups and so on. Plus moving a site to a global network, like Netlify’s, comes with the added benefits of quick download speeds and an easy to use deployment process.
Migration steps Install the WordPress to hugo Exporter plugin to your WordPress site. This plugin does not have any configuration settings. You just have to export it.
