--- title: Class Modifiers in Dart 3: Sealed, Interface, Final description: Dart 3: Sealed, Interface, Final - QuickBird Studios Class Modifiers in Dart 3.0. They introduce new modifiers like sealed, interface and base but also made... canonical: https://daily.dev/posts/class-modifiers-in-dart-3-sealed-interface-final-ip8aivwmf twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Class Modifiers in Dart 3: Sealed, Interface, Final | daily.dev og:description: Dart 3: Sealed, Interface, Final - QuickBird Studios Class Modifiers in Dart 3.0. They introduce new modifiers like sealed, interface and base but also made... og:url: https://daily.dev/posts/class-modifiers-in-dart-3-sealed-interface-final-ip8aivwmf og:image: https://api.daily.dev/og/posts/IP8aIvWmf.png og:image:alt: Class Modifiers in Dart 3: Sealed, Interface, Final og:image:width: 1200 og:image:height: 630 og:locale: en --- [QuickBird Studios](https://daily.dev/sources/quickbirdstudios) [Read post](https://api.daily.dev/r/IP8aIvWmf) # [Class Modifiers in Dart 3: Sealed, Interface, Final](https://api.daily.dev/r/IP8aIvWmf "Go to post") Dart 3: Sealed, Interface, Final - QuickBird Studios Class Modifiers in Dart 3.0\. They introduce new modifiers like sealed, interface and base but also made some changes to how existing ones behave. Many were confused by some of those changes because class modifiers seem to be more complicated and harder to understand than before. [#flutter](/tags/flutter "Check all #flutter posts")[#dart](/tags/dart "Check all #dart posts") Jun 23, 2023•7m read time•From [quickbirdstudios.com](https://api.daily.dev/r/IP8aIvWmf "quickbirdstudios.com") [](https://api.daily.dev/r/IP8aIvWmf "Go to post") Table of contents [The Problem](https://api.daily.dev/r/IP8aIvWmf "The Problem")[Class Modifiers 📦](https://api.daily.dev/r/IP8aIvWmf "Class Modifiers 📦")[Overview](https://api.daily.dev/r/IP8aIvWmf "Overview")[Why? 🤔](https://api.daily.dev/r/IP8aIvWmf "Why? 🤔")[Conclusion](https://api.daily.dev/r/IP8aIvWmf "Conclusion") 9 Impressions Comment Bookmark Copy Share your thoughtsPost [](https://daily.dev/sources/quickbirdstudios) [QuickBird Studios](https://daily.dev/sources/quickbirdstudios "https://daily.dev/sources/quickbirdstudios") 4 Followers • 32 Upvotes #### Would you recommend this post? 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