# ReadPackedFixedString4096Delta(FixedString4096Bytes, in StreamCompressionModel)

> Reads a FixedString4096Bytes delta value to the data stream using a StreamCompressionModel.

## Definition

* **Type:** Method
* **Namespace:** [Unity.Collections](/engine/6000.7/script-reference/unity/collections.md)
* **Assembly:** UnityEngine.ManagedKernelModule

## ReadPackedFixedString4096Delta(FixedString4096Bytes, StreamCompressionModel)

```csharp
public FixedString4096Bytes ReadPackedFixedString4096Delta(FixedString4096Bytes baseline, in StreamCompressionModel model)
```

### Parameters

**** (\[FixedString4096Bytes]\(/engine/6000.7/script-reference/unity/collections/fixedstring4096bytes)): The previous `FixedString4096Bytes` value, used to compute the diff.**** (\[StreamCompressionModel]\(/engine/6000.7/script-reference/unity/collections/streamcompressionmodel)): [StreamCompressionModel](/engine/6000.7/script-reference/unity/collections/streamcompressionmodel.md) model for writing value in a packed manner.

### Returns

| Type                                                                                              | Description                                                                                                  |
| ------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ |
| [FixedString4096Bytes](/engine/6000.7/script-reference/unity/collections/fixedstring4096bytes.md) | A `FixedString4096Bytes` value read from the current stream, or 0 if the end of the stream has been reached. |