Scala2.9.0のREPLをオレオレ仕様にカスタマイズ

gistfile1.scala

Welcome to Scala version 2.9.0.r0-b20110520175005 (Java HotSpot(TM) Client VM, Java 1.6.0_22).
Type in expressions to have them evaluated.
Type :help for more information.

scala> :power
** Power User mode enabled - BEEP BOOP WHIR **
** scala.tools.nsc._ has been imported      **
** global._ and definitions._ also imported **
** New vals! Try repl, intp, global, power  **
** New cmds! :help to discover them         **
** New defs! Type power.<tab> to reveal     **

scala> repl.setPrompt("java> ")
java> 1 to 10 toList
res1: List[Int] = List(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
java> repl.setPrompt("あばばばばば")
あばばばばば1
res3: Int = 1
あばばばばば

毎回自動で、プロンプトの文字を、前回の式を評価したときの時刻表示にしてみたり.scala

Welcome to Scala version 2.9.0.r0-b20110520175005 (Java HotSpot(TM) Client VM, Java 1.6.0_22).
Type in expressions to have them evaluated.
Type :help for more information.

scala> :power
** Power User mode enabled - BEEP BOOP WHIR **
** scala.tools.nsc._ has been imported      **
** global._ and definitions._ also imported **
** New vals! Try repl, intp, global, power  **
** New cmds! :help to discover them         **
** New defs! Type power.<tab> to reveal     **

scala> def t[A](p : => A):A = {
  import java.util.Calendar._
  val c = getInstance
  repl.setPrompt(
    Seq(HOUR,MINUTE,SECOND,MILLISECOND).map{c.get _}.mkString("",":","> ")
  )
  p
}
t: [A](p: => A)A

scala> :wrap t
Set wrapper to 't'

scala> 1 to 10 toList
res0: List[Int] = List(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
9:16:7:345> 3
res1: Int = 3
9:16:21:861>