0.31.6

kform/tech.ostack.kform/Observer

Observer

open class Observer<T, TState>(val toObserve: Path, val updateState: UpdateStateFn<T, TState>)(source)

Observer used within a stateful computation.

Defines a path to observe and a function to update the state of the computation whenever an event with a path matching the one being observed occurs.

Constructors

constructor(toObserve: Path, updateState: UpdateStateFn<T, TState>)

Properties

val toObserve: Path

Path to observe.

val updateState: UpdateStateFn<T, TState>

Updates the computation's state given the previous state and the event whose path matches the path being observed.