ranjan kumar jha ranjankumar03

Using Git

Global Settings

Related Setup: https://gist.github.com/hofmannsven/6814278
Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/
Interactive Beginners Tutorial: http://try.github.io/
Git Cheatsheet by GitHub: https://services.github.com/on-demand/downloads/github-git-cheat-sheet/

Getting Started in Scala

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.

Getting the JVM

Error Handling in Scala

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)
}

	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;
	}

	$> 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 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;