---
title: "init(charactersNoCopy:length:deallocator:)"
framework: foundation
role: symbol
role_heading: Initializer
path: "foundation/nsstring/init(charactersnocopy:length:deallocator:)"
---

# init(charactersNoCopy:length:deallocator:)

## Declaration

```swift
convenience init(charactersNoCopy chars: UnsafeMutablePointer<unichar>, length len: Int, deallocator: ((UnsafeMutablePointer<unichar>, Int) -> Void)? = nil)
```