Legacy Documentation: Version 2018.2 (Go to current version)
LanguageEnglish
  • C#

WriteAccessRequiredAttribute

class in Unity.Collections.LowLevel.Unsafe

/

Implemented in:UnityEngine.CoreModule

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

Description

Used in conjunction with the ReadOnlyAttribute, WriteAccessRequiredAttribute lets you specify which struct method and property require write access to be invoked.

When adding the ReadOnly attribute on a native container, you are indicating that only operations that read data can be performed on this container. When this is the case, methods and properties on the container that modify the array cannot be used. The [WriteAccessRequired] attribute indicates which methods and properties cannot be used on a container annotated with [ReadOnly].

[NativeContainer]
public struct MyList<T> where T : struct
{
    public int Length { get; private set; }

[WriteAccessRequired] public void Grow(int capacity) { // ... } }

public class MyMonoBehaviour : MonoBehaviour { [ReadOnly] MyList<int> readOnlyList;

MyList<int> writableList = new MyList<int>();

public void OnUpdate() { writableList.Grow(10); // Ok readOnlyList.Grow(10); // Illegal } }

Did you find this page useful? Please give it a rating: