---
title: identifier
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/locale/languagecode-swift.struct/identifier
---

# identifier

The identifier used to create the language code.

## Declaration

```swift
var identifier: String { get set }
```

## See Also

### Examining language code properties

- [isISOLanguage](foundation/locale/languagecode-swift.struct/isisolanguage.md)