---
title: decomposable()
framework: foundation
role: symbol
role_heading: Type Method
path: foundation/nsmutablecharacterset/decomposable()
---

# decomposable()

Returns a character set containing individual Unicode characters that can also be represented as composed character sequences (such as for letters with accents), by the definition of “standard decomposition” in version 3.2 of the Unicode character encoding standard.

## Declaration

```swift
class func decomposable() -> NSMutableCharacterSet
```

## See Also

### Getting Standard Character Sets

- [alphanumeric()](foundation/nsmutablecharacterset/alphanumeric().md)
- [capitalizedLetter()](foundation/nsmutablecharacterset/capitalizedletter().md)
- [control()](foundation/nsmutablecharacterset/control().md)
- [decimalDigit()](foundation/nsmutablecharacterset/decimaldigit().md)
- [illegal()](foundation/nsmutablecharacterset/illegal().md)
- [letter()](foundation/nsmutablecharacterset/letter().md)
- [lowercaseLetter()](foundation/nsmutablecharacterset/lowercaseletter().md)
- [newline()](foundation/nsmutablecharacterset/newline().md)
- [nonBase()](foundation/nsmutablecharacterset/nonbase().md)
- [punctuation()](foundation/nsmutablecharacterset/punctuation().md)
- [symbol()](foundation/nsmutablecharacterset/symbol().md)
- [uppercaseLetter()](foundation/nsmutablecharacterset/uppercaseletter().md)
- [whitespaceAndNewline()](foundation/nsmutablecharacterset/whitespaceandnewline().md)
- [whitespace()](foundation/nsmutablecharacterset/whitespace().md)