RigidObservable

java.lang.Object
- org.reactfx.RigidObservable<O>

Type Parameters:

O - observer type accepted by this Observable

All Implemented Interfaces:

Observable<O>

Direct Known Subclasses:

ConstVal, EventStreams.Never
```
public abstract class RigidObservable<O>
extends java.lang.Object
implements Observable<O>
```
An observable that does not change and does not produce any notifications.

Constructor Summary

Constructors
Constructor Description

RigidObservable()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addObserver(O observer)`	Adding an observer to a RigidObservable is a no-op.
`Subscription`	`observe(O observer)`	Returns an empty Subscription (`Subscription.EMPTY`).
`void`	`removeObserver(O observer)`	Removing an observer from a RigidObservable is a no-op.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RigidObservable
```
public RigidObservable()
```
- Method Detail
  - addObserver
```
public final void addObserver(O observer)
```
    Adding an observer to a RigidObservable is a no-op.
    
    Specified by:
    
    addObserver in interface Observable<O>
  - removeObserver
```
public final void removeObserver(O observer)
```
    Removing an observer from a RigidObservable is a no-op.
    
    Specified by:
    
    removeObserver in interface Observable<O>
  - observe
```
public final Subscription observe(O observer)
```
    Returns an empty Subscription (Subscription.EMPTY).
    
    Specified by:
    
    observe in interface Observable<O>