---
title: NSProprietaryStringEncoding
framework: foundation
role: symbol
role_heading: Global Variable
path: foundation/nsproprietarystringencoding
---

# NSProprietaryStringEncoding

Installation-specific encoding.

## Declaration

```swift
var NSProprietaryStringEncoding: UInt { get }
```

## Discussion

Discussion Proprietary encodings have not been used since OS X v10.0. You should specify a standard encoding instead.