# RequestExtras

Artifact: [androidx.navigation3:navigation3-runtime](https://developer.android.com/jetpack/androidx/releases/navigation3) [View Source](https://cs.android.com/search?q=file:androidx/navigation3/runtime/deeplink/RequestExtras.kt+class:androidx.navigation3.runtime.deeplink.RequestExtras) Added in [1.2.0](https://developer.android.com/jetpack/androidx/releases/navigation3#1.2.0) Common/AllAndroid/JVM
- Cmn

  ```
  class RequestExtras
  ```

*** ** * ** ***

A map-like class that stores key-value pairs of `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtrasKey` to its associated value for use as `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/DeepLinkRequest#extras()`.

Construct with `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/package-summary#emptyRequestExtras()` or with `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/package-summary#requestExtras(kotlin.Function1)` DSL.

## Summary

| ### Public functions |
|---|---|---|
| `operator https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html` | `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#contains(androidx.navigation3.runtime.deeplink.RequestExtrasKey)(key: https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtrasKey<*>)` Checks if a value is present for `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#contains(androidx.navigation3.runtime.deeplink.RequestExtrasKey)`. | Cmn |
| `open operator https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html` | `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#equals(kotlin.Any)(other: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-any/index.html?)` | Cmn |
| `operator T?` | `<T : https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-any/index.html> https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#get(androidx.navigation3.runtime.deeplink.RequestExtrasKey)(key: https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtrasKey<T>)` Returns the value for `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#get(androidx.navigation3.runtime.deeplink.RequestExtrasKey)`, or `null` if absent. | Cmn |
| `open https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#hashCode()()` | Cmn |
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html` | `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#isEmpty()()` Returns `true` if empty, `false` otherwise. | Cmn |
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html` | `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#isNotEmpty()()` Returns `true` if not empty, `false` otherwise. | Cmn |
| `operator https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras` | `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#minus(androidx.navigation3.runtime.deeplink.RequestExtras)(other: https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras)` Returns a new `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras` containing all entries of this instance except keys in `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#minus(androidx.navigation3.runtime.deeplink.RequestExtras)`. | Cmn |
| `operator https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras` | `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#plus(androidx.navigation3.runtime.deeplink.RequestExtras)(other: https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras)` Returns a new `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras` containing all entries of this instance plus entries from `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#plus(androidx.navigation3.runtime.deeplink.RequestExtras)`. | Cmn |
| `open https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html` | `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#toString()()` | Cmn |

| ### Public properties |
|---|---|---|
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#size()` Number of key-value pairs stored. | Cmn |

## Public functions

### contains

Cmn Added in [1.2.0](https://developer.android.com/jetpack/androidx/releases/navigation3#1.2.0)

```
operator fun contains(key: RequestExtrasKey<*>): Boolean
```

Checks if a value is present for `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#contains(androidx.navigation3.runtime.deeplink.RequestExtrasKey)`.

| Parameters |
|---|---|
| `key: https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtrasKey<*>` | key to check |

| Returns |
|---|---|
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html` | `true` if present, `false` otherwise |

### equals

Cmn

```
open operator fun equals(other: Any?): Boolean
```

### get

Cmn Added in [1.2.0](https://developer.android.com/jetpack/androidx/releases/navigation3#1.2.0)

```
operator fun <T : Any> get(key: RequestExtrasKey<T>): T?
```

Returns the value for `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#get(androidx.navigation3.runtime.deeplink.RequestExtrasKey)`, or `null` if absent.

| Parameters |
|---|---|
| `key: https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtrasKey<T>` | key associated with value type `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#get(androidx.navigation3.runtime.deeplink.RequestExtrasKey)` |

| Returns |
|---|---|
| `T?` | the value of type `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#get(androidx.navigation3.runtime.deeplink.RequestExtrasKey)`, or `null` |

### hashCode

Cmn

```
open fun hashCode(): Int
```

### isEmpty

Cmn Added in [1.2.0](https://developer.android.com/jetpack/androidx/releases/navigation3#1.2.0)

```
fun isEmpty(): Boolean
```

Returns `true` if empty, `false` otherwise.

### isNotEmpty

Cmn Added in [1.2.0](https://developer.android.com/jetpack/androidx/releases/navigation3#1.2.0)

```
fun isNotEmpty(): Boolean
```

Returns `true` if not empty, `false` otherwise.

### minus

Cmn Added in [1.2.0](https://developer.android.com/jetpack/androidx/releases/navigation3#1.2.0)

```
operator fun minus(other: RequestExtras): RequestExtras
```

Returns a new `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras` containing all entries of this instance except keys in `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#minus(androidx.navigation3.runtime.deeplink.RequestExtras)`.

### plus

Cmn Added in [1.2.0](https://developer.android.com/jetpack/androidx/releases/navigation3#1.2.0)

```
operator fun plus(other: RequestExtras): RequestExtras
```

Returns a new `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras` containing all entries of this instance plus entries from `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#plus(androidx.navigation3.runtime.deeplink.RequestExtras)`. Entries in `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras#plus(androidx.navigation3.runtime.deeplink.RequestExtras)` take precedence over duplicate keys.

### toString

Cmn

```
open fun toString(): String
```

## Public properties

### size

Cmn Added in [1.2.0](https://developer.android.com/jetpack/androidx/releases/navigation3#1.2.0)

```
val size: Int
```

Number of key-value pairs stored.