July 2018
Intermediate to advanced
400 pages
12h 14m
English
Content preview from Kotlin Programming: The Big Nerd Ranch Guide, First Edition
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Sequences
In Chapter 10 and Chapter 11, you were introduced to the collection types List, Set, and Map. These collection types are all known as eager collections. When an instance of any of these types is created, all the values it contains are added to the collection and can be accessed.
There is another flavor of collection: lazy collections. You learned about lazy initialization, in which a variable is not initialized until it is first accessed, in Chapter 13. Lazy collection types, similar to lazy initialization of other types, provide better performance – specifically when working with very large collections – because their values are produced only as needed.
Kotlin offers a built-in lazy collection type called Sequence
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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.