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# localizedCaseInsensitiveCompare(_:)

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

```
func localizedCaseInsensitiveCompare(_ string: String) -> ComparisonResult
```

## Parameters

`string`

The string with which to compare the receiver.

    This value must not be     `nil`    . If this value is     `nil`    , the behavior is undefined and may change in future versions of macOS.

## Return Value

Returns an [`ComparisonResult`](/documentation/Foundation/ComparisonResult) value that indicates the lexical ordering. [`ComparisonResult.orderedAscending`](/documentation/Foundation/ComparisonResult/orderedAscending) the receiver precedes `aString` in lexical ordering, [`ComparisonResult.orderedSame`](/documentation/Foundation/ComparisonResult/orderedSame) the receiver and `aString` are equivalent in lexical value, and [`ComparisonResult.orderedDescending`](/documentation/Foundation/ComparisonResult/orderedDescending) if the receiver follows `aString`.

## Discussion

This method uses the current locale.

---

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