mirror of https://github.com/sbt/sbt.git
22 lines
432 B
Scala
22 lines
432 B
Scala
/* sbt -- Simple Build Tool
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* Copyright 2008 Mark Harrah
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*/
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package sbt
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private final class LazyVar[T](initialValue: => T) extends NotNull
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{
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private[this] var value: Option[T] = None
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def apply() =
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synchronized
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{
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value match
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{
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case Some(v) => v
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case None =>
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val newValue = initialValue
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value = Some(newValue)
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newValue
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}
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}
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def update(newValue: T) = synchronized { value = Some(newValue) }
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} |