# Uses of Interface
java.util.function.LongToDoubleFunction

Packages that use LongToDoubleFunction
Package | Description
--- | ---
java.util.stream | Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections.

## Uses of LongToDoubleFunction in java.util.stream

Methods in java.util.stream with parameters of type LongToDoubleFunction
Modifier and Type | Method | Description
--- | --- | ---
`DoubleStream` | LongStream.`mapToDouble​(LongToDoubleFunction mapper)` | Returns a `DoubleStream` consisting of the results of applying the given function to the elements of this stream.