| Package | Description | 
|---|---|
| java.util.stream | Classes to support functional-style operations on streams of elements, such
 as map-reduce transformations on collections. | 
| Modifier and Type | Method | Description | 
|---|---|---|
| IntStream | LongStream. mapToInt(LongToIntFunction mapper)Returns an  IntStreamconsisting of the results of applying the
 given function to the elements of this stream. | 
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