Faktor 10 oreillyross

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Saving the planet one line of code at a time

oreillyross / build.sbt

Created April 24, 2015 14:21

Here’s build.sbt to test Scalaz 7.1.0: All you have to do now is open the REPL using sbt 0.13.0: $ sbt console

	scalaVersion := "2.11.2"
	val scalazVersion = "7.1.0"
	libraryDependencies ++= Seq(
	"org.scalaz" %% "scalaz-core" % scalazVersion,
	"org.scalaz" %% "scalaz-effect" % scalazVersion,
	"org.scalaz" %% "scalaz-typelevel" % scalazVersion,
	"org.scalaz" %% "scalaz-scalacheck-binding" % scalazVersion % "test"
	)
	scalacOptions += "-feature"
	initialCommands in console := "import scalaz._, Scalaz._"

oreillyross / Quadratic.java

Created April 22, 2015 12:29

Page 86 of Clean code, use this in your problem for FRP course

	public class Quadratic {
	public static double root1(double a, double b, double c) {
	double determinant = determinant(a, b, c);
	return (-b + Math.sqrt(determinant)) / (2*a);
	}
	public static double root2(int a, int b, int c) {
	double determinant = determinant(a, b, c);
	return (-b - Math.sqrt(determinant)) / (2*a);
	}
	private static double determinant(double a, double b, double c) {

oreillyross / build.gradle

Created April 11, 2015 21:07

Scalatest

	repositories {
	mavenRepo urls: 'http://scala-tools.org/repo-releases'
	mavenCentral()
	}

	dependencies {
	// Libraries needed to run the scala tools
	scalaTools 'org.scala-lang:scala-compiler:2.7.7'
	scalaTools 'org.scala-lang:scala-library:2.7.7'

oreillyross / Q7 solution.js

Created February 23, 2015 16:55

MongoDB

	use test;

	var img_albums = [];
	var imgs = [];

	var img_in_albums = db.albums.aggregate({$unwind: "$images"}, {$group: {_id: {images: "$images"}}});


	img_in_albums.forEach(
	function(img_alb) {

oreillyross / orphans.js

Last active August 29, 2015 14:15

	use test;

	db.images.find({tags: {$in: ["sunrises"]}}).count();

	var images = db.images.find({},{_id: 1}).toArray();

	var orphans = db.albums.find({"images": {$in: [2433]}});

	orphans.count();
	//while (images.hasNext()) {

oreillyross / count sunrises

Created February 22, 2015 06:28

db.images.find({tags: {$in: ["sunrises"]}}).count()

oreillyross / Q7

Last active August 29, 2015 14:15

	use test;

	db.images.find({tags: {$in: ["sunrises"]}}).count();

	var images = db.images.find({},{_id: 1});


	//var orphans = db.albums.find({"images": {$in: [2433]}});

	//orphans.count();

oreillyross / FinalQ4.java

Last active August 29, 2015 14:15

Mongo course - part solution

	public class TestLike {

	public static void main(String[] args) throws UnknownHostException {
	MongoClient mongoclient = new MongoClient();
	DB db = mongoclient.getDB("blog");
	DBCollection coll = db.getCollection("posts");


	DBObject comments = new BasicDBObject("permalink", "csukcsijclxkgvzoojde");
	String comment = "comments." + 2 + ".num_likes";

oreillyross / Check for Digits

Created February 8, 2015 14:09

MongoDB aggregate with a check for the first char being a digit, and summing the projection

oreillyross / Aggregate

Created February 8, 2015 12:34

H5.3 Mongo course. Aggregate and group function