SethTisue

sealed trait HardCore extends Core[Nothing]
object HardCore {
  case class Super(i: Int)        extends HardCore
  case class Slot(i: Int)         extends HardCore
  case class LitInt(i: Int)       extends HardCore
  case class LitInt64(l: Long)    extends HardCore
  case class LitByte(b: Byte)     extends HardCore
  case class LitShort(s: Short)   extends HardCore
  case class LitString(s: String) extends HardCore
  case class LitChar(c: Char)     extends HardCore

SethTisue

"Smokescreen" by Desperate Bicycles
please send corrections to seth@tisue.net

bringing good news on a fast train
bringing fast news on a goods train
they're running (?) sometime after midnight  (somebody?)
all covered in dirt

and I had nothing but a good deal
and I had a good deal full of nothing

SethTisue

Welcome to Scala version 2.10.2

scala> val x: Any = "foo"
x: Any = foo

scala> val y: String = x.asInstanceOf
java.lang.ClassCastException: java.lang.String cannot be cast to scala.runtime.Nothing$

SethTisue

This holly
Faces blank in focus
Center of attention
Displacement of the dance
Fog in the square
Did anybody notice
The houses on the outside
Bruised (?) from abutment
There are houses on the inside
Sink in a cushion

SethTisue

the people have spoken

45-minute talks:
- Heather Miller, “Academese to English: Scala's Type System, Dependent Types and What It Means To You”
- Daniel Spiewak, “May Your Data Ever Be Coherent”
- Eugene Burmako & Lars Hupel, “Macros vs. Types”

30-minute talks:
- Eugene Yokota, “Learning Scalaz”
- P. Oscar Boykin, “Summingbird: a streaming map-reduce API for Storm, Hadoop and more”

SethTisue

// `lazy val` inside `implicit class`

implicit class RichStream[T](s: Stream[T]) {
  lazy val circular: Stream[T] =
    s #::: circular
}

// in order to make this work with `extends AnyVal`, you have to make the
// lazy val local, as follows:

SethTisue

The Journal of Artificial Societies and Social Simulation
Volume 17, Number 1, January 2014

Agent-Based Simulation of Pedestrian Behaviour in Closed Spaces: A Museum Case Study
http://jasss.soc.surrey.ac.uk/17/1/16.html
"Both the code and the interface of our model have been originally developed by us within the NetLogo software environment"

Agent-Based Simulation of the Search Behavior in China's Resale Housing Market: Evidence from Beijing
http://jasss.soc.surrey.ac.uk/17/1/18.html
"NetLogo requires less computational power and offers multiple visible extensions (Wilensky 1999), so we develop our housing market simulation model based on NetLogo"

SethTisue

to-report add [a b]
  reset-timer
  wait a
  wait b
  report timer
end

observer> show add 2 2 
observer: 4
observer> show add 2 2 

SethTisue

// pseudo-Scala with nonexistent "yield" in while

val generator =
  while(true) {
    val in = readLine()
    if (in == null)
      break
    yield in
  }

SethTisue

% cd /usr/local/nescala
% echo full details at nescala.org (mobile-friendly)
zsh: number expected

% scala
Welcome to Scala
scala> :power
** Power User mode enabled
scala> ^Z
zsh: suspended  scala