retronym

scala> import scalaz._, Scalaz._, effect._
import scalaz._
import Scalaz._
import effect._

scala> val listIoEither = List(EitherT[IO, Int, String](IO(Right("r"))))
listIoEither: List[scalaz.EitherT[scalaz.effect.IO,Int,String]] = List(scalaz.EitherTFunctions$$anon$20@49ab1824)

scala> val ioEitherList = listIoEither.sequenceU
ioEitherList: scalaz.EitherT[scalaz.effect.IO,Int,List[java.lang.String]] = scalaz.EitherTFunctions$$anon$20@5d38a346

oxbowlakes

<?xml version="1.0" encoding="UTF-8"?>
<scheme name="oxbow" version="1" parent_scheme="Default">
  <option name="LINE_SPACING" value="1.0" />
  <option name="EDITOR_FONT_SIZE" value="12" />
  <option name="EDITOR_FONT_NAME" value="Consolas" />
  <colors />
  <attributes>
    <option name="ABSTRACT_CLASS_NAME_ATTRIBUTES">
      <value>
        <option name="FOREGROUND" value="666666" />

oxbowlakes

/**
 * 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._