August 2017
Intermediate to advanced
440 pages
10h
English
Content preview from Android Development with Kotlin
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Sequence
Sequence is an interface that is also used to refer to a collection of elements. It is an alternative for Iterable. For Sequence, there are separate implementations of most collection processing functions (map, flatMap, filter, sorted, and so on). The key difference is that all these functions are constructed in such a way that they return a sequence that is packaged over the previous sequence. Due to this, the following points become true:
- The size of the sequence does not need to be known in advance
- Sequence processing is more efficient, especially for large collections where we want to perform several transformations (details will be described later)
In Android, sequences are used for processing very big collections or for ...
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