trait ActionType[-A] extends AnyRef
The ActionType
type class is used to verify that only valid actions are dispatched. An implicit instance of
ActionType[A]
must be in scope when calling dispatch methods or creating effects that return actions.
ActionType
is contravariant, which means it's enough to have an instance of ActionType
for a common supertype
to be able to dispatch actions of its subtypes. For example providing an instance of ActionType[Action]
allows
dispatching any class that is a subtype of Action
.
- A
Action type
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