---
title: isFileReferenceURL()
framework: foundation
role: symbol
role_heading: Instance Method
path: foundation/nsurl/isfilereferenceurl()
---

# isFileReferenceURL()

Returns whether the URL is a file reference URL.

## Declaration

```swift
func isFileReferenceURL() -> Bool
```

## Return Value

Return Value true if the URL is a file reference URL; otherwise, false.

## See Also

### Querying an NSURL

- [checkResourceIsReachableAndReturnError(_:)](foundation/nsurl/checkresourceisreachableandreturnerror(_:).md)
- [isFileURL](foundation/nsurl/isfileurl.md)