# NativeArray<T>

> Provides a buffer of native memory to managed code, making it possible to share data between managed and native code without marshalling costs.

## Definition

* **Type:** Struct
* **Namespace:** [Unity.Collections](/engine/6000.6/script-reference/unity/collections.md)
* **Assembly:** UnityEngine.CoreModule
* **Implements:** [IDisposable](https://learn.microsoft.com/dotnet/api/system.idisposable), [IEnumerable\<T>](https://learn.microsoft.com/dotnet/api/system.collections.generic.ienumerable-1), [IEnumerable](https://learn.microsoft.com/dotnet/api/system.collections.ienumerable), [IEquatable\<NativeArray\<T>>](https://learn.microsoft.com/dotnet/api/system.iequatable-1)

```csharp
public struct NativeArray<T> : IDisposable, IEnumerable<T>, IEnumerable, IEquatable<NativeArray<T>> where T : struct
```

## Remarks

NativeArray is a fixed-size block of unmanaged memory which you can directly access from managed code. You can use NativeArray instances in jobs and Burst-compiled code, with optional safety checks for bounds, access, and dependencies. You explicitly control allocation and disposal via an allocator, and Unity tracks allocations to help detect memory leaks. You can use the [Unity Collections package](https://docs.unity3d.com/Packages/com.unity.collections@latest) to further extend its functionality.

## Constructors

| Constructor                                                                                                                                                                                                                 | Description                                                                                                                     |
| --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
| [NativeArray\`1(\`0\[\],Unity.Collections.Allocator)](/engine/6000.6/script-reference/unity/collections/nativearray1/ctor.md#nativearray\(0-allocator\))                                                                    | Creates a NativeArray from an array of elements.                                                                                |
| [NativeArray\`1(\`0\[\],Unity.Collections.MemoryLabel)](/engine/6000.6/script-reference/unity/collections/nativearray1/ctor.md#nativearray\(0-memorylabel\))                                                                | Creates a NativeArray from an array of elements, using the specified memory label.                                              |
| [NativeArray\`1(System.Int32,Unity.Collections.Allocator,Unity.Collections.NativeArrayOptions)](/engine/6000.6/script-reference/unity/collections/nativearray1/ctor.md#nativearray\(int-allocator-nativearrayoptions\))     | Creates a new NativeArray and allocates enough memory to fit the provided amount of elements.                                   |
| [NativeArray\`1(System.Int32,Unity.Collections.MemoryLabel,Unity.Collections.NativeArrayOptions)](/engine/6000.6/script-reference/unity/collections/nativearray1/ctor.md#nativearray\(int-memorylabel-nativearrayoptions\)) | Creates a new NativeArray and allocates enough memory to fit the provided number of elements, using the specified memory label. |
| [NativeArray\`1(Unity.Collections.NativeArray\{\`0},Unity.Collections.Allocator)](/engine/6000.6/script-reference/unity/collections/nativearray1/ctor.md#nativearray\(nativearrayt-allocator\))                             | Creates a NativeArray from an existing NativeArray.                                                                             |
| [NativeArray\`1(Unity.Collections.NativeArray\{\`0},Unity.Collections.MemoryLabel)](/engine/6000.6/script-reference/unity/collections/nativearray1/ctor.md#nativearray\(nativearrayt-memorylabel\))                         | Creates a NativeArray from an existing NativeArray, using the specified memory label.                                           |

## Properties

| Property                                                                                 | Description                                                                                                                           |
| ---------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| [IsCreated](/engine/6000.6/script-reference/unity/collections/nativearray1/iscreated.md) | Indicates that a [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md) has an allocated memory buffer. |
| [this\[\]](/engine/6000.6/script-reference/unity/collections/nativearray1/item.md)       | Access [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md) elements by index.                        |
| [Length](/engine/6000.6/script-reference/unity/collections/nativearray1/length.md)       | Number of elements in a [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md).                         |

## Methods

| Method                                                                                                 | Description                                                                                                                                                    |
| ------------------------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [AsReadOnly](/engine/6000.6/script-reference/unity/collections/nativearray1/asreadonly.md)             | Casts a [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md) to read-only array.                                               |
| [AsReadOnlySpan](/engine/6000.6/script-reference/unity/collections/nativearray1/asreadonlyspan.md)     | Exposes [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md) data as a `System.ReadOnlySpan<T>`.                               |
| [AsSpan](/engine/6000.6/script-reference/unity/collections/nativearray1/asspan.md)                     | Exposes [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md) data as a `System.Span<T>`.                                       |
| [CopyFrom](/engine/6000.6/script-reference/unity/collections/nativearray1/copyfrom.md)                 | Copies all the elements from a [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md) or a managed array of the same length.     |
| [CopyTo](/engine/6000.6/script-reference/unity/collections/nativearray1/copyto.md)                     | Copies all the elements to another [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md) or a managed array of the same length. |
| [Dispose](/engine/6000.6/script-reference/unity/collections/nativearray1/dispose.md)                   | Disposes a [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md).                                                               |
| [Equals](/engine/6000.6/script-reference/unity/collections/nativearray1/equals.md)                     | Compares a [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md) instance and an object.                                        |
| [GetEnumerator](/engine/6000.6/script-reference/unity/collections/nativearray1/getenumerator.md)       | Gets an enumerator.                                                                                                                                            |
| [GetHashCode](/engine/6000.6/script-reference/unity/collections/nativearray1/gethashcode.md)           | Gets a hash code for the current instance.                                                                                                                     |
| [GetSubArray](/engine/6000.6/script-reference/unity/collections/nativearray1/getsubarray.md)           | Gets a view into an array starting at the specified index.                                                                                                     |
| [Reinterpret](/engine/6000.6/script-reference/unity/collections/nativearray1/reinterpret.md)           | Reinterpret a [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md) with a different data type (type punning).                  |
| [ReinterpretLoad](/engine/6000.6/script-reference/unity/collections/nativearray1/reinterpretload.md)   | Reinterpret and load data starting at underlying index as a different type.                                                                                    |
| [ReinterpretStore](/engine/6000.6/script-reference/unity/collections/nativearray1/reinterpretstore.md) | Reinterpret and store data starting at underlying index as a different type.                                                                                   |
| [ToArray](/engine/6000.6/script-reference/unity/collections/nativearray1/toarray.md)                   | Convert a [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md) to an array.                                                    |

## Static Methods

| Method                                                                         | Description                                                                                                                                      |
| ------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------ |
| [Copy](/engine/6000.6/script-reference/unity/collections/nativearray1/copy.md) | Copies a range of elements from a source array to a destination array, starting from the source index and copying them to the destination index. |

## Structs

| Struct                                                                                                 | Description                                                                                                                                      |
| ------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------ |
| [NativeArray\<T>.ReadOnly](/engine/6000.6/script-reference/unity/collections/nativearray1/readonly.md) | Represents a [NativeArray\<T>](/engine/6000.6/script-reference/unity/collections/nativearray1.md) interface constrained to read-only operations. |