# LongFunction

Added in[API level 24](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)

# LongFunction

```
@FunctionalInterface interface LongFunction<R : Any!>
```

|--------------------------------------------------------------------------------------------------------------------|
| [java.util.function.LongFunction](https://developer.android.com/reference/kotlin/java/util/function/LongFunction#) |

Represents a function that accepts a long-valued argument and produces a result. This is the`long`-consuming primitive specialization for[Function](https://developer.android.com/reference/kotlin/java/util/function/Function).

This is a[functional interface](https://developer.android.com/reference/kotlin/java/util/function/package-summary)whose functional method is[apply(long)](https://developer.android.com/reference/kotlin/java/util/function/LongFunction#apply(kotlin.Long)).

## Summary

|                                                                                                                        Public methods                                                                                                                         ||
|-----------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| abstractR | [apply](https://developer.android.com/reference/kotlin/java/util/function/LongFunction#apply(kotlin.Long))`(`value:` `[Long](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-long/index.html)`)` Applies this function to the given argument. |

## Public methods

### apply

Added in[API level 24](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
abstract fun apply(value: Long): R
```

Applies this function to the given argument.

|                                                 Parameters                                                  ||
|---------|----------------------------------------------------------------------------------------------------|
| `value` | [Long](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-long/index.html):the function argument |

|         Return         ||
|---|---------------------|
| R | the function result |