# UnicodeCodec Implementations ## Topics ### Initializers [`init()`](/documentation/Swift/Unicode/UTF32/init()) Creates an instance of the UTF-32 codec. ### Instance Methods [`func decode(inout I) -> UnicodeDecodingResult`](/documentation/Swift/Unicode/UTF32/decode(_:)-swift.method) Starts or continues decoding a UTF-32 sequence. ### Type Methods [`static func encode(Unicode.Scalar, into: (Unicode.UTF32.CodeUnit) -> Void)`](/documentation/Swift/Unicode/UTF32/encode(_:into:)) Encodes a Unicode scalar as a UTF-32 code unit by calling the given closure. --- 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)