Uses of Interface
rx.Observer

Packages that use Observer
Package
Description
Base reactive classes: Observable, Single and Completable; base reactive consumers; other common base interfaces.
Exception handling utilities, safe subscriber exception classes, lifecycle exception classes.
Operators that allow composing Observables to transform and manipulate data in an asynchronous, functional and thread-safe manner.
 
 
 
Classes extending the Observable base reactive class, synchronous and asynchronous event generators.
Default wrappers and implementations for the base reactive consumer classes and interfaces; utility classes for creating them from callbacks.
Classes extending the Observable base reactive class and implementing the Observer interface at the same time (aka hot Observables).