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, and Timer
Transforming Observable Items
Buffer, FlatMap, GroupBy, Map, Scan, and Window
Filtering Observables
Debounce, Distinct, ElementAt, Filter, First, IgnoreElements, Last, Sample, Skip, SkipLast, Take, and TakeLast
Combining Observables
And/Then/When, CombineLatest, Join, Merge, StartWith, Switch, and Zip
Error Handling Operators
Catch and Retry
Utility Operators
Delay, Do, Materialize/Dematerialize, ObserveOn, Serialize, Subscribe, SubscribeOn,TimeInterval, Timeout, Timestamp, and Using
Conditional and Boolean Operators
All, Amb, Contains, DefaultIfEmpty, SequenceEqual, SkipUntil, SkipWhile, TakeUntil, and TakeWhile
Mathematical and Aggregate Operators
Average, Concat, Count, Max, Min, Reduce, and Sum
Converting Observables
To
Connectable Observable Operators
Connect, Publish, RefCount, and Replay
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
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