February 2017
Intermediate to advanced
434 pages
10h 27m
English
Content preview from Learning Concurrent Programming in Scala - Second EditionBecome 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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Event streams
In this section, we study the basic data-type that drives most computations in the Reactors framework: an event stream. Event streams represent special program values that can occasionally produce events. Event streams are represented by the Event[T] type.
Semantically, an event stream is very similar to the Observable type, which we saw in Chapter 6, Concurrent Programming with Reactive Extensions. As we will see, the main difference between Observable and Events is that an Observable object can generally be used from different threads, and even emit events across different threads when the observeOn method is used. An Events object, by contrast, can only be used inside the reactor that owns that event stream.
Tip
Never share an event ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.