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Small changes to Ref

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This commit is contained in:
Peter Vlugter 2010-08-13 11:08:55 +12:00
parent 5fa3cbd361
commit 9f7d78173c
1 changed files with 1 additions and 5 deletions
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6
akka-core/src/main/scala/stm/Ref.scala
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@ -42,13 +42,12 @@ class Ref[T](initialOpt: Option[T] = None)
def swap(elem: T) = set(elem)
def alter(f: T => T): T = {
ensureNotNull
val value = f(this.get)
set(value)
value
}
def getOption: Option[T] = Option(this.get)
def opt: Option[T] = Option(this.get)
def getOrWait: T = getOrAwait
@ -94,7 +93,4 @@ class Ref[T](initialOpt: Option[T] = None)
def toLeft[X](right: => X) =
if (isEmpty) Right(right) else Left(this.get)
private def ensureNotNull =
if (isNull) throw new RuntimeException("Cannot alter Ref's value when it is null")
}