# AttributedStringProtocol Implementations ## Topics ### Instance Properties [`var characters: AttributedString.CharacterView`](/documentation/Foundation/AttributedString/characters) The characters of the attributed string, as a view into the underlying string. [`var endIndex: AttributedString.Index`](/documentation/Foundation/AttributedString/endIndex) The string’s past-the-end position — the position one greater than the last valid subscript argument. [`var runs: AttributedString.Runs`](/documentation/Foundation/AttributedString/runs-swift.property) The attributed runs of the attributed string, as a view into the underlying string. [`var startIndex: AttributedString.Index`](/documentation/Foundation/AttributedString/startIndex) The position of the first character in a nonempty attributed string. [`var unicodeScalars: AttributedString.UnicodeScalarView`](/documentation/Foundation/AttributedString/unicodeScalars) The Unicode scalars of the attributed string, as a view into the underlying string. [`var utf16: AttributedString.UTF16View`](/documentation/Foundation/AttributedString/utf16) A view of the attributed string’s contents as a collection of UTF-16 code units. [`var utf8: AttributedString.UTF8View`](/documentation/Foundation/AttributedString/utf8) A view of the attributed string’s contents as a collection of UTF-8 code units. ### Subscripts [`subscript(some RangeExpression) -> AttributedSubstring`](/documentation/Foundation/AttributedString/subscript(_:)-2vqsz) Returns a substring of the attributed string using a range to indicate the substring bounds. [`subscript(dynamicMember _: KeyPath) -> K.Value?`](/documentation/Foundation/AttributedString/subscript(dynamicMember:)-34zdf) Returns an attribute value that a key path indicates. [`subscript(dynamicMember _: KeyPath) -> ScopedAttributeContainer`](/documentation/Foundation/AttributedString/subscript(dynamicMember:)-9modq) Returns a scoped attribute container that a key path indicates. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)