Rx allows developers to use the IObservable interface, which represents synchronous datastreams, to write queries using LINQ. To recap, Rx can be thought of as consisting of three sections:

• Observables: The interface that brings together and represents all these datastreams
• Language-Integrated Query (LINQ): The ability to use LINQ to query these multiple datastreams
• Schedulers: Parameterizing concurrency using schedulers

In this recipe, we will be looking at the LINQ functionality of Rx in more detail.