caiorss’s gists

caiorss / detect-jdbc-driver-name.scala

Created October 25, 2016 01:53 — forked from takezoux2/detect-jdbc-driver-name.scala

Detect jdbc driver name from jdbc url.


	def detectDriverNameFromUrl(url : String) : Option[String] = {
	val splits = url.split(":")
	if(splits.length < 2){
	return None
	}
	if(splits(0) != "jdbc"){
	return None
	}

caiorss / gist:3db6d420423170476ae6b1e0559ca5aa

Created October 25, 2016 01:47 — forked from denen99/gist:6765084

Coursera week 2 scala tests

	package funsets

	import org.scalatest.FunSuite

	import org.junit.runner.RunWith
	import org.scalatest.junit.JUnitRunner

	/**
	* This class is a test suite for the methods in object FunSets. To run
	* the test suite, you can either:

caiorss / GADTs.scala

Created October 25, 2016 01:42 — forked from jroesch/GADTs.scala

Scala GADTs

	/* http://www.haskell.org/ghc/docs/latest/html/users_guide/data-type-extensions.html#gadt
	Generalized Algebraic Datatypes in Scala */

	trait Term[A]
	case class Lit(x: Int) extends Term[Int]
	case class Succ(x: Term[Int]) extends Term[Int]
	case class IsZero(x: Term[Int]) extends Term[Boolean]
	case class If[A](guard: Term[Boolean], t: Term[A], y: Term[A]) extends Term[A]
	case class Pair[A, B](x: Term[A], y: Term[B]) extends Term[(A,B)]

caiorss / gist:c8a2ea2a884885af61d94032befe1a76

Created October 25, 2016 01:41 — forked from derekmorr/gist:dd2ae28fdd5aced2d727

Structural typing in Scala

	case class Circle(radius: Double) {
	def area = radius * radius * Math.PI
	}

	case class Rectangle(side: Double) {
	def area = side * side
	}

	case class Triangle(base: Double, height: Double) {
	def area = 0.5d * base * height

caiorss / gist:8fba13edceced894f7143b80fa10e62d

Created October 25, 2016 01:32 — forked from krishnanraman/gist:4759672

Tony Morris class

	// And by the way, please feel free to contribute, correct errors, etc!

	trait Functor[F[_]] {
	def fmap[A, B](f: A => B): F[A] => F[B]
	}

	object Functor {
	val ListFunctor: Functor[List] =
	new Functor[List] {
	def fmap[A, B](f: A => B) =

caiorss / PaypalTransaction.scala

Created October 25, 2016 01:31 — forked from mslinn/PaypalTransaction.scala

Attempt to persist entities with >22 fields via Slick. Cannot find documentation on how nested tuples are supposed to work; tried creating two helper classes (CustomerAddress and PaymentDetail). Compiler error is: scala: overloaded method value <> with alternatives: [R(in method <>)(in method <>)(in method <>)(in method <>)(in method <>)(in meth…

	package com.micronautics.paypal

	import java.util.{ List, Map }
	import collection.JavaConversions._
	import collection.immutable.HashMap
	import controllers.Email
	import org.joda.time.DateTime
	import slick.driver.MySQLDriver.simple._
	import java.util

caiorss / scala-by-example-exercise-6.0.3.scala

Created October 25, 2016 01:30 — forked from jackfarrington/scala-by-example-exercise-6.0.3.scala

Scala By Example exercise 6.0.3

	/*
	* The trait Nat is provided by the text.
	*/
	trait Nat {
	def isZero: Boolean
	def predecessor: Nat
	def successor: Nat
	def +(that: Nat): Nat
	def -(that: Nat): Nat

caiorss / MOption.scala

Created October 25, 2016 01:29 — forked from ElectricCoffee/MOption.scala

Adds map and flatMap as extension methods to Scala, for those who don't want/need scalaz for their project, is fully compatible with for-comprehensions

	package extension.monad

	trait Monad[A, M[_]] {
	// >>= :: Monad m => m a -> (a -> m b) -> m b
	def flatMap[B](input: A => M[B]): M[B] // AKA "bind"
	}

	trait Functor[A, F[_]] {
	// fmap :: Functor f => (a -> b) -> f a -> f b
	def map[B](input: A => B): F[B] // AKA "fmap"

caiorss / SystemProperties.scala

Last active October 25, 2016 01:37

Scala - Java interoperability and integration exploration.

	// Print Systme properties
	//
	//
	scala> System.getProperty("path.separator")
	res29: String = :

	scala> System.getProperty("os.name")
	res30: String = Linux

	scala> System.getProperty("os.arch")

caiorss / scalaAgdt.scala

Created October 25, 2016 00:11

	// AGDT - Algebraic Data type
	// List implementation
	//
	sealed trait AList[+A]
	case object ANil extends AList[Nothing]
	case class Cons[A](head: A, tail: AList[A]) extends AList[A]

	scala> Cons(1, Cons(10, Cons(30, ANil)))
	res74: Cons[Int] = Cons(1,Cons(10,Cons(30,ANil)))

Caio Rordrigues caiorss