Scala does not have checked exceptions like Java, so you can't do soemthing like this to force a programmer to deal with an exception:
public void stringToInt(String str) throws NumberFormatException {
Integer.parseInt(str)
}
This is my attempt to give Scala newcomers a quick-and-easy rundown to the prerequisite steps they need to a) try Scala, and b) get a standard project up and running on their machine. I'm not going to talk about the language at all; there are plenty of better resources a google search away. This is just focused on the prerequisite tooling and machine setup. I will not be assuming you have any background in JVM languages. So if you're coming from Python, Ruby, JavaScript, Haskell, or anywhere… I hope to present the information you need without assuming anything.
Disclaimer It has been over a decade since I was new to Scala, and when I was new to Scala, I was coming from a Java and Ruby background. This has probably caused me to unknowingly make some assumptions. Please feel free to call me out in comments/tweets!
One assumption I'm knowingly making is that you're on a Unix-like platform. Sorry, Windows users.
import com.lmax.disruptor.RingBuffer; | |
import com.lmax.disruptor.dsl.Disruptor; | |
import java.util.concurrent.ExecutorService; | |
import java.util.concurrent.Executors; | |
public class BackgroundLogger | |
{ | |
private static final int ENTRIES = 64; |
$> brew cask install java | |
$> brew install kafka | |
$> vim ~/bin/kafka | |
# ~/bin/kafka | |
#!/bin/bash | |
zkServer start | |
kafka-server-start.sh /usr/local/etc/kafka/server.properties |
import java.io.Serializable; | |
// must implement Serializable in order to be sent | |
public class Message implements Serializable{ | |
private final String text; | |
public Message(String text) { | |
this.text = text; | |
} |