Invoked when a new value is received by the associated Reactive
Invoked when a new value is received by the associated Reactive
the new value
the previous value, if one was defined
Priority of this Reaction in contrast to other Reactions attached to the same Reactive.
Priority of this Reaction in contrast to other Reactions attached to the same Reactive. A higher value represents a higher position in reactions list. See Priority for pre-defined values.