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# rangeOfCharacter(from:options:range:)

Finds and returns the range in the `String` of the first
character from a given character set found in a given range with
given options.

```
func rangeOfCharacter(from aSet: CharacterSet, options mask: String.CompareOptions = [], range aRange: Range<Self.Index>? = nil) -> Range<Self.Index>?
```

---

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