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Reactive Programming for .NET Developers

You're reading from  Reactive Programming for .NET Developers

Product type Book
Published in Jul 2016
Publisher Packt
ISBN-13 9781785882883
Pages 276 pages
Edition 1st Edition
Languages

Table of Contents (15) Chapters

Reactive Programming for .NET Developers
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
1. First Steps Toward Reactive Programming 2. Reactive Programming with C# 3. Reactive Extension Programming 4. Observable Sequence Programming 5. Debugging Reactive Extensions 6. CLR Integration and Scheduling 7. Advanced Techniques 8. F# and Functional Reactive Programming 9. Advanced FRP and Best Practices

Subscription life cycle


What will happen if we want to stop a single observer from receiving messages from the observable event source? If we change the program Main from the preceding example to the following one, we could experience a wrong observer life cycle design. Here's the code:

//this is the message observable responsible of producing messages 
using (var observer = new ConsoleIntegerProducer()) 
//those are the message observer that consume messages 
using (var consumer1 = observer.Subscribe(new IntegerConsumer(2))) 
using (var consumer2 = observer.Subscribe(new IntegerConsumer(3))) 
{ 
    using (var consumer3 = observer.Subscribe(new IntegerConsumer(5))) 
    { 
        //internal lifecycle 
    } 
 
    observer.Wait(); 
} 
 
Console.WriteLine("END"); 
Console.ReadLine(); 

Here is the result in the output console:

The third observer unable to catch value messages

By using the using construct method...

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