June 2015
Intermediate to advanced
182 pages
3h 56m
English
Content preview from Learning Reactive Programming With Java 8Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 4. Transforming, Filtering, and Accumulating Your Data
Now that we have the means for creating Observable instances from a wide variety of source data, it's time to build programming logic around these instances. We will present the basic reactive operators that we'll use to achieve step-by-step computations (the reactive way of handling data).
We will begin with transformations, using the famous flatMap() and map() operators, as well as some more less common transforming operators. After that we'll learn how to filter our data, using the filter() operator, skipping elements, receiving only elements at a given position in time. The chapter will also cover accumulating data with the scan operator. Most of these operators will be presented ...
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