LongFunction (Java SE 14 & JDK 14)
Description: declaration: module: java.base, package: java.util.function, interface: LongFunction
Keywords: java.util.function.LongFunction interface

Module java.base
Package java.util.function

# Interface LongFunction<R>

Type Parameters:
  `R` - the type of the result of the function

Functional Interface:
  This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

    @FunctionalInterface
    public interface LongFunction<R>

Represents a function that accepts a long-valued argument and produces a result. This is the `long`-consuming primitive specialization for `Function`.

This is a functional interface whose functional method is `apply(long)`.

Since:
  1.8
See Also:
  `Function`

- ## Method Summary

  Modifier and Type | Method | Description
  --- | --- | ---
  `R` | `apply​(long value)` | Applies this function to the given argument.

- ## Method Details

  - ### apply

    R apply​(long value)
    Applies this function to the given argument.
    Parameters:
      `value` - the function argument
    Returns:
      the function result