djspiewak

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

akre54

node_modules
out.js*

danharper

var gulp = require('gulp');
var sourcemaps = require('gulp-sourcemaps');
var source = require('vinyl-source-stream');
var buffer = require('vinyl-buffer');
var browserify = require('browserify');
var watchify = require('watchify');
var babel = require('babelify');

function compile(watch) {
  var bundler = watchify(browserify('./src/index.js', { debug: true }).transform(babel));

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

nhunzaker

var _        = require('underscore');
var Backbone = require('backbone');
var cheerio  = require('cheerio');
var request  = require('request');

Backbone.ajax = function(options) {
	options.json = true;

	return request(options, function(error, result) {
		if (error) {

mollerse

var gulp = require('gulp'),
  sass = require('gulp-sass'),
  browserify = require('gulp-browserify'),
  concat = require('gulp-concat'),
  embedlr = require('gulp-embedlr'),
  refresh = require('gulp-livereload'),
  lrserver = require('tiny-lr')(),
  express = require('express'),
  livereload = require('connect-livereload')
  livereloadport = 35729,

michaelcox

require.config({
  baseUrl: '/backbone-tests/',
  paths: {
    'jquery'        : '/app/libs/jquery',
    'underscore'    : '/app/libs/underscore',
    'backbone'      : '/app/libs/backbone',
    'mocha'         : 'libs/mocha',
    'chai'          : 'libs/chai',
    'chai-jquery'   : 'libs/chai-jquery',
    'models'        : '/app/models'

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

respectTheCode

var http = require("http"),
    url = require("url"),
    path = require("path"),
    fs = require("fs"),
    mime = require("mime")
    port = process.argv[2] || 8888;

http.createServer(function(request, response) {

  var uri = url.parse(request.url).pathname