StringSignal

The StringSignal class monitors a string value.

Properties

Property Description

Property	Description
`lastValue`	(get) lastValue: string (set) (Not Available) Specifies a string that represents the last value of the signal. Note: The signal value is updated during simulation tick. This means that the value of `lastValue` is undefined before its first update. It is also undefined for signals that aren't used for any bindings/subscriptions, because those signals aren't guaranteed to be updated at each simulation tick.

lastValue

(get) lastValue: string
(set) (Not Available)

Specifies a string that represents the last value of the signal.

Note: The signal value is updated during simulation tick. This means that the value of lastValue is undefined before its first update. It is also undefined for signals that aren't used for any bindings/subscriptions, because those signals aren't guaranteed to be updated at each simulation tick.

Methods

Method	Description
`concat`	concat(other: StringSignal): StringSignal Returns a `StringSignal` containing the concatenation of the values specified by the input signals. See Also: `ReactiveModule.concat`
`delayBy`	delayBy(timeSpan: {milliseconds: number}): this Delays a signal. The argument is an object with a "milliseconds" property specifying the delay duration in milliseconds.
`eq`	eq(other: StringSignal): BoolSignal Returns a Boolean signal that takes the value of `true` every time when the value of the left-hand-side signal is equal to the value of the right-hand-side one, and the value of `false` all other time. See Also: `ReactiveModule.eq`
`history`	history(framesCount: number): StringSignalHistory history(framesCount: number, initialValues: Array<string>): StringSignalHistory Returns an object used to access signal values from past frames. The amount of frames tracked is customizable via `framesCount` parameter. Historical signal values are going to be initialized with signal value at call time or using `initialValues` if provided.
`monitor`	monitor(): EventSource monitor(config: { fireOnInitialValue: ?boolean}): EventSource Returns an `EventSource` that emits an event every time the value of the input signal changes. The event contains a JSON object with the old and new values in the format: { "oldValue": val, "newValue": val } Note: By default, there is no event fired for the initial value of the signal. If `config.fireOnInitialValue` is set to `true` then an event for initial signal value is also emitted. `oldValue` is unset for this initial event.
`ne`	ne(other: StringSignal): BoolSignal Returns a Boolean signal that takes the value of `true` every time when the value of the left-hand-side signal is not equal to the value of the right-hand-side one, and the value of `false` all other time. See Also: `ReactiveModule.ne`
`pin`	pin(): StringSignal Returns a `StringSignal` containing a constant value which is the value of the specified signal immediately after `pin` is called.
`pinLastValue`	pinLastValue(): ConstStringSignal Returns a `ConstStringSignal` containing a constant value which is the last value of the specified signal before `pinLastValue` is called. ConstStringSignal can be passed to a functions which accept strings