## Uses of Interface
java.util.function.DoubleToLongFunction

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

- - ### Uses of DoubleToLongFunction in java.util.stream

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

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