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import scala.language.higherKinds
import scalaz.{Functor, \/}

class LeftConverter[E1, E2](g: E1 => E2) {
  def apply[A, F[_]](f: F[E1 \/ A])(implicit F: Functor[F]): F[E2 \/ A] =
    F.map(f)(_.leftMap(g))
}

object LeftConverter {
  def apply[E1, E2](g: E1 => E2): LeftConverter[E1, E2] = new LeftConverter(g)

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class CustomBuffer[A]
  extends ArrayBuffer[A]
    with GenericTraversableTemplate[A, CustomBuffer]
    with mutable.BufferLike[A, CustomBuffer[A]]
    with mutable.IndexedSeqOptimized[A, CustomBuffer[A]]
    with mutable.Builder[A, CustomBuffer[A]]
{
  override def companion: GenericCompanion[CustomBuffer] = CustomBuffer
  override def result: CustomBuffer[A] = this
  override def stringPrefix: String = getClass.getSimpleName

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import sbt._
import Keys._

object BrownBuild extends Build {

  val brownSettings = Seq(
    scalaVersion := "2.11.2",
    scalacOptions ++= Seq(
      "-deprecation",
      "-feature"

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http://jeffreypalermo.com/blog/the-onion-architecture-part-1/

オニオンアーキテクチャのこのページを読んでも (この円形の図によって示されるアーキテクチャがどんな問題を解決できるのか) 理解できないので、とりあえず逐次訳を書いてみる。英語だから読み切れてないだけかもしれないという懸念を払拭するためだ。逐次訳に要した時間を把握するために時刻もメモしておく。時間を優先するために最低限の意味が通じる文章にとどめる。

14:20-

私は何度か話したことがある / オニオンアーキテクチャについて
そしてそれがより保守可能なアプリケーションに行き着くことを見つけた

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  // see also:
  // http://www.scala-sbt.org/0.13.5/docs/faq.html#how-can-i-create-a-custom-run-task-in-addition-to-run
  def settingFor(
    mainLocation: SettingKey[String], taskKey: TaskKey[Unit]): Def.Setting[Task[Unit]] = {

    taskKey <<= initScoped(taskKey.scopedKey, runnerInit)
      .zipWith((streams, fullClasspath in Compile, mainLocation in taskKey ).identityMap){

      case (a,b) => (a,b).map {

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function hayo() {
  Logger.log("start hayo()");

  var count = 0
  while (count++ < 10){
    try{
      var parameters = {
        muteHttpExceptions: true,
        param1: "c.txt"
      };

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/* 11.7 */

def compose[A,B,C](f: A => F[B], g: B => F[C]): A => F[C] = {
  a =>
    // compose9[A,B,C](f)(a)(g)
    flatMap(f(a))(g)
}

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scala> util.Properties.versionString
res0: String = version 2.11.7

scala>   class Sample[A]{
     |     object tmp { def get(arg: A) = arg }
     |     def foo = tmp
     |   }
defined class Sample

scala>   new Sample[String].foo.get("hello")

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TERMS AND CONDITIONS

A. ITUNES STORE, MAC APP STORE, APP STORE, AND IBOOKS STORE TERMS OF SALE
B. ITUNES STORE TERMS AND CONDITIONS
C. MAC APP STORE, APP STORE AND IBOOKS STORE TERMS AND CONDITIONS
D. APPLE MUSIC TERMS AND CONDITIONS

THE LEGAL AGREEMENTS SET OUT BELOW GOVERN YOUR USE OF THE ITUNES STORE, MAC APP STORE, APP STORE, AND IBOOKS STORE SERVICES ("SERVICES"). TO AGREE TO THESE TERMS, CLICK "AGREE." IF YOU DO NOT AGREE TO THESE TERMS, DO NOT CLICK "AGREE," AND DO NOT USE THE SERVICES.

FOR MORE INFORMATION ABOUT OUR PRODUCTS AND SERVICES, PLEASE VISIT https://www.apple.com/support/.

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import sbt.complete.DefaultParsers._

val sample = inputKey[Unit]("sample of tab-completion")
val settings = Seq(
  sample := {
    val selected = parser.parsed

    println("selected numbers")
    selected.map(" * " + _).foreach(println)