January 2017
Intermediate to advanced
420 pages
9h 25m
English
Content preview from Programming KotlinBecome 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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Sequences
We defined what a sequence is and what it does at the start of this chapter. Sequences are great for scenarios when the size of the collection is not known in advance. Think about reading a table from a database, where you wouldn't know how many records you will get back; or reading a local .csv file, where you don't know how many lines it contains. You can think of a sequence as a list that goes on and on. A sequence is evaluated on a need-to-know basis, and only to the point needed. Think of the Fibonacci series; there is no point in constructing the collection in advance. How many items do you need to compute? The caller determines that.
If you have worked with Scala or Java 8, you will see the sequences as the Kotlin equivalent of ...
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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.