This documentation groups information about the various operators and examples of their usage into the following pages:
- Creating Observables
Create,Defer,Empty/Never/Throw,From,Interval,Just,Range,Repeat,Start, andTimer- Transforming Observable Items
Buffer,FlatMap,GroupBy,Map,Scan, andWindow- Filtering Observables
Debounce,Distinct,ElementAt,Filter,First,IgnoreElements,Last,Sample,Skip,SkipLast,Take, andTakeLast- Combining Observables
And/Then/When,CombineLatest,Join,Merge,StartWith,Switch, andZip- Error Handling Operators
CatchandRetry- Utility Operators
Delay,Do,Materialize/Dematerialize,ObserveOn,Serialize,Subscribe,SubscribeOn,TimeInterval,Timeout,Timestamp, andUsing- Conditional and Boolean Operators
All,Amb,Contains,DefaultIfEmpty,SequenceEqual,SkipUntil,SkipWhile,TakeUntil, andTakeWhile- Mathematical and Aggregate Operators
Average,Concat,Count,Max,Min,Reduce, andSum- Converting Observables
To- Connectable Observable Operators
Connect,Publish,RefCount, andReplay- Backpressure Operators
- a variety of operators that enforce particular flow-control policies
These pages include information about some operators that are not part of the core of ReactiveX but are implemented in one or more of language-specific implementations and/or optional modules.
http://reactivex.io/documentation/observable.html