---
title: "rangeOfComposedCharacterSequence(at:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/stringprotocol/rangeofcomposedcharactersequence(at:)"
---

# rangeOfComposedCharacterSequence(at:)

Returns the range in the String of the composed character sequence located at a given index.

## Declaration

```swift
func rangeOfComposedCharacterSequence(at anIndex: Self.Index) -> Range<Self.Index>
```