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• endless-core_3
• 0.29.0
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• EventApplier.scala

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endless.core.event.EventApplier.scala Maven / Gradle / Ivy

package endless.core.event

import endless.\/

/** Function that defines transition of the state given an event (or invalid event for the given
  * state).
  *
  * @tparam S
  *   state
  * @tparam E
  *   event
  */
trait EventApplier[S, E] extends ((Option[S], E) => String \/ Option[S])