object SignallingMapRef
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- Signal.scala
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- def ofSingleImmutableMap[F[_], K, V](initial: Map[K, V] = Map.empty[K, V])(implicit F: Concurrent[F]): F[SignallingMapRef[F, K, Option[V]]]
Builds a
SignallingMapReffor effectF, initialized to the supplied value.Builds a
SignallingMapReffor effectF, initialized to the supplied value.Update semantics for
discreteare the same asSignallingRef, with one exception: it cannot distinguish updates that remove a key (by setting its value toNone).More specifically: if you remove a key, this will only notify once per listener i.e. setting it to
Noneagain will not trigger another update. Furthermore, if a listener's last pull returnedNone, and by the time it pulls again the current value isNone, then it will not be notified regardless of any non-Noneupdates that may have happened between the pulls. This special semantic forNoneis necessary to prevent memory leaks at keys with no values and no listeners. - final def synchronized[T0](arg0: => T0): T0
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