---
title: kUCCollateCaseInsensitiveMask
framework: coreservices
role: symbol
role_heading: Global Variable
path: coreservices/kuccollatecaseinsensitivemask
---

# kUCCollateCaseInsensitiveMask

If the corresponding bit is set, then uppercase and titlecase characters are treated as equivalent to the corresponding lowercase characters.

## Declaration

```swift
var kUCCollateCaseInsensitiveMask: Int { get }
```