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# applyingTransform(_:reverse:)

Returns a new string by applying a specified transform to the string.

```
func applyingTransform(_ transform: StringTransform, reverse: Bool) -> String?
```

## Discussion

You can use this method to, for example, transliterate text from one script to another, strip diacritics or combining marks, and get the unicode names of characters.

> Note:
> The constants defined by the ``doc://com.apple.foundation/documentation/Foundation/StringTransform`` type offer a subset of the functionality provided by the underlying ICU transform functionality. To apply an ICU transform defined in the [ICU User Guide](http://userguide.icu-project.org/transforms/general) that doesn’t have a corresponding ``doc://com.apple.foundation/documentation/Foundation/StringTransform`` constant, create an instance of  ``doc://com.apple.foundation/documentation/Foundation/NSMutableString`` and call the ``doc://com.apple.foundation/documentation/Foundation/NSMutableString/applyTransform(_:reverse:range:updatedRange:)`` method instead.

.

## See Also

[`applyTransform(_:reverse:range:updatedRange:)`](/documentation/Foundation/NSMutableString/applyTransform(_:reverse:range:updatedRange:))

Transliterates the receiver by applying a specified ICU string transform.


---

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