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Reactive Programming in Kotlin

You're reading from   Reactive Programming in Kotlin Design and build non-blocking, asynchronous Kotlin applications with RXKotlin, Reactor-Kotlin, Android, and Spring

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Product type Paperback
Published in Dec 2017
Publisher Packt
ISBN-13 9781788473026
Length 322 pages
Edition 1st Edition
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Author (1):
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Rivu Chakraborty Rivu Chakraborty
Author Profile Icon Rivu Chakraborty
Rivu Chakraborty
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Table of Contents (13) Chapters Close

Preface 1. A Short Introduction to Reactive Programming FREE CHAPTER 2. Functional Programming with Kotlin and RxKotlin 3. Observables, Observers, and Subjects 4. Introduction to Backpressure and Flowables 5. Asynchronous Data Operators and Transformations 6. More on Operators and Error Handling 7. Concurrency and Parallel Processing in RxKotlin with Schedulers 8. Testing RxKotlin Applications 9. Resource Management and Extending RxKotlin 10. Introduction to Web Programming with Spring for Kotlin Developers 11. REST APIs with Spring JPA and Hibernate 12. Reactive Kotlin and Android

Skipping and taking emissions


Just like the preceding situation in this chapter, where we used the take operator, there are often some scenarios where you would like to take some of the emissions and skip the remaining ones. The skip and take operators are of huge help in those scenarios. They are actually a part of the filtering operators we discussed in the previous chapter; however, honestly, they do deserve a dedicated discussion. So, here it is.

Skipping emissions (skip, skipLast, skipUntil, and skipWhile)

There may be a requirement where you would like to skip some emissions at the beginning or skip emissions until a particular condition is met. You may even have to wait for another producer before taking emissions and skip all remaining ones.

These operators are designed keeping the exact scenario in mind. They help you skip emissions in various ways.

RxKotlin provides us with many variations and overloads of the skip operator; we will discuss the most important ones among them:

  • skip
  • skipLast...
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