---
title: "localizedCaseInsensitiveCompare(_:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/stringprotocol/localizedcaseinsensitivecompare(_:)"
---

# localizedCaseInsensitiveCompare(_:)

Compares the string and the given string using a case-insensitive, localized, comparison.

## Declaration

```swift
func localizedCaseInsensitiveCompare<T>(_ aString: T) -> ComparisonResult where T : StringProtocol
```