UnchangingPropertyObservable class¶

Attributes: [DebuggerDisplay("UnchangingProperty: {_value}")] [EditorBrowsable(EditorBrowsableState.1)]

Summary¶

View source

Observes a property that has no change notification: its value, once, and then silence.

classDiagram
class UnchangingPropertyObservable~T~
class IObservable~T~ {
    <>
}
IObservable~T~ <|.. UnchangingPropertyObservable~T~

Implements: IObservable

Remarks¶

Deliberately never completes. A property with no mechanism behind it has one value and no further news, which is not the same as a sequence that has ended - and downstream operators read the difference. A completing source ends a binding's subscription, and inside a chain it lets the stage below tear down a subtree that is still live. The runtime engine's own fallback stays open for exactly this reason.

Hand-rolled rather than composed. The general spelling is a return followed by a never, concatenated, which is three objects where this is one - on a path taken once per binding of every unobservable property in a view.

Constructors¶

Methods¶