---
title: "init(charactersIn:)"
framework: foundation
role: symbol
role_heading: Initializer
path: "foundation/characterset/init(charactersin:)-8tcll"
---

# init(charactersIn:)

Initialize with a range of integers.

## Declaration

```swift
init(charactersIn range: Range<Unicode.Scalar>)
```

## Discussion

Discussion It is the caller’s responsibility to ensure that the values represent valid Unicode.Scalar values, if that is what is desired.