propensive

Welcome to Scala version 2.10.5 (OpenJDK 64-Bit Server VM, Java 1.6.0_27).
Type in expressions to have them evaluated.
Type :help for more information.

scala> import rapture.core._
import rapture.core._

scala> val str: String = alloc() // new String()
str: String = ""

propensive

Welcome to Scala version 2.10.4 (OpenJDK 64-Bit Server VM, Java 1.6.0_27).
Type in expressions to have them evaluated.
Type :help for more information.

// Import the Rapture modules we need
scala> import rapture._, uri._, codec._, io._, fs._, core._, csv._
import rapture._
import uri._
import codec._
import io._

propensive

// Define the general Arg type and companion object:
import language.higherKinds, language.implicitConversions, language.existentials
object Arg { implicit def toArg[Tc[_], T: Tc](t: T): Arg[T, Tc] = Arg(t, implicitly[Tc[T]]) }
case class Arg[T, Tc[_]](value: T, typeclass: Tc[T])

// Say, for example we have a typeclass for getting the length of something, with a few instances
trait Lengthable[T] { def length(t: T): Int }
implicit val intLength = new Lengthable[Int] { def length(i: Int) = 1 }
implicit val stringLength = new Lengthable[String] { def length(s: String) = s.length }

jnauber

What's Up in Dockerland?

dockercon Europe 2014

Ankündigungen

- Docker
	- Docker Machine
		- "Machine makes it really easy to create Docker hosts on local hypervisors and cloud providers. It creates servers, installs Docker on them, then configures the Docker client to talk to them."
		- Kapselt unterschiedliche "Driver" und bietet ein einheitliches Interface um die Docker-Ready Maschinen zu deployen

djspiewak

package com.rr.experiment

import org.specs2.ScalaCheck
import org.specs2.mutable._

import org.scalacheck._

import scalaz._

import scodec._

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.

---

kevinwright

As compiled by Kevin Wright a.k.a @thecoda

(executive producer of the movie, and I didn't even know it... clever huh?)

please, please, please - If you know of any slides/code/whatever not on here, then ping me on twitter or comment this Gist!

This gist will be updated as and when I find new information. So it's probably best not to fork it, or you'll miss the updates!

Monday June 16th

headinthebox

Exercise: Define foldl in terms of foldr

Recall the definition of folding a list from the right

    foldr :: (a -> b -> b) -> b -> [a] -> b
    foldr f b []     = b
    foldr f b (a:as) = f a (foldr f b as)

for example foldr f b [1,2,3] = f 1 (f 2 (f 3 b)).

runarorama

sealed trait Interact[A]

case class Ask(prompt: String)
  extends Interact[String]

case class Tell(msg: String)
  extends Interact[Unit]

trait Monad[M[_]] {
  def pure[A](a: A): M[A]

viktorklang

#!/usr/bin/env zsh

# in fino veritas
 
# Borrowing shamelessly from these oh-my-zsh themes:
#   fino-time
#   pure
#   https://gist.github.com/smileart/3750104

# Set required options