June 2016
Intermediate to advanced
290 pages
6h 45m
English
Content preview from Mastering JavaScript Design Patterns - 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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Filtering streams
As we saw in the preceding section, it is possible to filter a stream of events and, from it produce a new stream of events. You might be familiar with being able to filter items in an array. ES5 introduced a number of new operators for arrays such as filter and some. The first of these produces a new array containing only elements which match the rule in the filter. Some is a similar function which simply returns true if any element of the array matches. These same sorts of functions are also supported on streams as well as functions you might be familiar with from functional languages such as First and Last. In addition to the functions which would make sense for arrays, there are a number of time series based functions which ...
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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.