mbektimirov

trait MyList[+A] { 
  def fold[B](k: Option[(A, B)] => B): B
  def map[B](f: A => B): MyList[B]             = sys.error("Implement me in terms of fold")
  def flatMap[B](f: A => MyList[B]): MyList[B] = sys.error("Implement me in terms of fold")
  def headOption: Option[B]                    = sys.error("Implement me in terms of fold")
  def tailOption: Option[MyList[B]]            = sys.error("Implement me in terms of fold")
  def isEmpty                                  = sys.error("Implement me in terms of fold")
  def length                                   = sys.error("Implement me in terms of fold")
}

mbektimirov

/**
 * Part Zero : 10:15 Saturday Night
 *
 * (In which we will see how to let the type system help you handle failure)...
 *
 * First let's define a domain. (All the following requires scala 2.9.x and scalaz 6.0)
 */

import scalaz._
import Scalaz._

mbektimirov

#!/usr/bin/env sh

##
# This is script with usefull tips taken from:
#   https://github.com/mathiasbynens/dotfiles/blob/master/.osx
#
# install it:
#   curl -sL https://raw.github.com/gist/2108403/hack.sh | sh
#