---
title: Locale.LanguageCode.IdentifierType
framework: foundation
role: symbol
role_heading: Enumeration
path: foundation/locale/languagecode-swift.struct/identifiertype
---

# Locale.LanguageCode.IdentifierType

Types of ISO 639 language code.

## Declaration

```swift
enum IdentifierType
```

## Topics

### Enumeration Cases

- [Locale.LanguageCode.IdentifierType.alpha2](foundation/locale/languagecode-swift.struct/identifiertype/alpha2.md)
- [Locale.LanguageCode.IdentifierType.alpha3](foundation/locale/languagecode-swift.struct/identifiertype/alpha3.md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Escapable](swift/escapable.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)