6 Real-time event streams: functional reactive programming

This chapter covers

  • Understanding queryable event streams
  • Working with Reactive Extensions (Rx)
  • Combining F# and C# to make events first-class values
  • Processing high-rate data streams
  • Implementing a Publisher-Subscriber pattern

We’re used to responding to events in our lives daily. If it starts to rain, we get an umbrella. If the daylight in a room begins to dim, we flip the switch to turn on the electric light. The same is true in our applications, where a program must react to (or handle) events caused by something else happening in the application or a user interacting with it. Almost every program must handle events, whether they’re the receipt of an HTTP request for a web ...

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