---
title: versionHash
framework: coredata
role: symbol
role_heading: Instance Property
path: coredata/nsattributedescription/versionhash
---

# versionHash

The version hash for the attribute.

## Declaration

```swift
var versionHash: Data { get }
```

## Discussion

Discussion The version hash is used to uniquely identify an attribute based on its configuration. This value includes the versionHash information from NSPropertyDescription and the attribute type.

## See Also

### Related Documentation

- [versionHash](coredata/nspropertydescription/versionhash.md)