---
title: Locale.IdentifierType.icu
framework: foundation
role: symbol
role_heading: Case
path: foundation/locale/identifiertype/icu
---

# Locale.IdentifierType.icu

The type of identifiers that follow ICU (International Components for Unicode) conventions.

## Declaration

```swift
case icu
```

## Discussion

Discussion An example of this type is th_TH@calendar=gregorian;numbers=thai.

## See Also

### Standard Identifier Types

- [Locale.IdentifierType.cldr](foundation/locale/identifiertype/cldr.md)
- [Locale.IdentifierType.bcp47](foundation/locale/identifiertype/bcp47.md)