class BestEffortLazyVal[T] extends Serializable
A lock-free implementation of a lazily-initialized variable.
If there are concurrent initializations then the compute() function may be invoked
multiple times. However, only a single compute() result will be stored and all readers
will receive the same result object instance.
This may be helpful for avoiding deadlocks in certain scenarios where exactly-once value computation is not a hard requirement.
- Source
- BestEffortLazyVal.java
- Note
This helper class has additional requirements on the compute function: 1) The compute function MUST not return null; 2) The computation failure is not cached.
,Scala 3 uses a different implementation of lazy vals which doesn't have this problem. Please refer to <a href="https://docs.scala-lang.org/scala3/reference/changed-features/lazy-vals-init.html">Lazy Vals Initialization for more details.
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- new BestEffortLazyVal(compute: () => T)
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- Deprecated
(Since version 9)