--- title: SwiftUI Property Wrappers Under the Hood | daily.dev description: Property wrappers in SwiftUI require implementing wrappedValue with getter and setter, and projectedValue for binding support. The wrappedValue uses a... canonical: https://daily.dev/posts/swiftui-property-wrappers-under-the-hood-e1ufonttn twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: SwiftUI Property Wrappers Under the Hood | daily.dev og:description: Property wrappers in SwiftUI require implementing wrappedValue with getter and setter, and projectedValue for binding support. The wrappedValue uses a... og:url: https://daily.dev/posts/swiftui-property-wrappers-under-the-hood-e1ufonttn og:image: https://api.daily.dev/og/posts/E1UFOntTn.png og:image:alt: SwiftUI Property Wrappers Under the Hood og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # SwiftUI Property Wrappers Under the Hood **[Rebeloper](https://daily.dev/sources/rebeloper)** · 2 min read · 0 upvotes · 0 comments ## Summary Property wrappers in SwiftUI require implementing wrappedValue with getter and setter, and projectedValue for binding support. The wrappedValue uses a nonmutating setter to update the underlying state variable, while projectedValue returns a Binding with its own getter and setter. This pattern enables custom property wrappers to work with SwiftUI's data binding system, similar to how @State works with TextField bindings. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#ios](https://daily.dev/tags/ios), [#swift](https://daily.dev/tags/swift), [#swiftui](https://daily.dev/tags/swiftui) [View this post on daily.dev](https://daily.dev/posts/swiftui-property-wrappers-under-the-hood-e1ufonttn) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"SwiftUI Property Wrappers Under the Hood","url":"https://daily.dev/posts/swiftui-property-wrappers-under-the-hood-e1ufonttn","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/swiftui-property-wrappers-under-the-hood-e1ufonttn"},"datePublished":"2026-02-04T18:09:51.211Z","dateModified":"2026-02-04T18:10:05.298Z","description":"Property wrappers in SwiftUI require implementing wrappedValue with getter and setter, and projectedValue for binding support. 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