March Flutter Meetup - Flutter updates

Transcript

1. Flutter Updates
   Jhin Lee
   Full-Stack Developer
   @Unity
   

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2. Speaker - Jhin Lee
   ● Full-Stack Developer @Unity
   ○ Golang, JS/TS, React.js(Next.js), GCP
   ● Full-Stack Developer @ConsiderBeyond
   ○ Firebase + Flutter
   ○ https://www.considerbeyond.com
   ● LinkedIn: https://www.linkedin.com/in/leehack
   

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3. Changelog
   ● Nov 2018 Flutter 1 release
   ○ Android / iOS
   ● Mar 2021 Flutter 2 release
   ○ Web support (stable)
   ○ Desktop support (preview)
   ○ Sound Null Safety (Dart 2.12)
   ● Feb 2022 Flutter 2.10 release
   ○ Windows support (stable)
   ● May 2022 Flutter 3 release
   ○ Linux support (stable)
   ○ MacOS support (stable)
   ○ Material 3 Theme
   

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4. Current State
   ● Flutter 3.7.7 (Dart 2.19.4)
   ● Fully cross-platform
   ○ Web
   ■ Maybe WebApp(or PWA) but not WebSite
   ○ Mobile: iOS, Android
   ○ Desktop: Linux, Windows, MacOS
   ● Null-Safety
   ● Material 3 Theme
   ● 700,000+ apps are published
   

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5. Flutter Forward
   ● Impeller rendering engine
   ○ Next-generation rendering engine
   ○ 3D graphics
   ○ Performance improvement: Side-By-Side Demo
   ○ Now preview on iOS
   ● Seamless integration (Interoperability)
   ○ Web: demo
   ○ Mobile
   ■ FFIgen is used to generate bindings for C, Objective-C and Swift APIs
   ■ JNIgen is used to generate bindings for Java and Kotlin APIs
   ● Dart 3 (alpha)
   ○ Records and patterns
   ○ Capability controls to classes: `interface`, `base`, `final`, `sealed`
   ● WASM, RISC-V support
   

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6. Records and Patterns (Swap)
   int a = 1;
   int b = 2;
   (a, b) = (b, a);
   // Now a = 2, b = 1
   Demo
   

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7. Records and Patterns (Return multiple values)
   (String firstName, String lastName) getName() {
   final user = User(firstName: 'Jhin', lastName: 'Lee');
   return (user.firstName, user.lastName);
   }
   void main(List args) {
   // return multiple values
   final (firstName, lastName) = getName();
   print('Name: $firstName $lastName');
   }
   Demo
   

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8. Records and Patterns (Destructuring)
   User getUser() {
   final user = User(firstName: 'Jhin', lastName: 'Lee');
   return user;
   }
   void main(List args) {
   final User(firstName:first, lastName:last) = getUser();
   print('$first is a $last.');
   }
   Demo
   

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9. Records and Patterns (Destructuring)
   final users = [
   User(firstName: 'user1', lastName: '1'),
   User(firstName: 'user2', lastName: '2'),
   User(firstName: 'user3', lastName: '3'),
   ];
   for(final User(firstName: first, lastName: last) in users) {
   print('$first is a $last.');
   }
   Demo
   

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10. Resources
    ● What’s next for Flutter (Flutter Forward)
    ● What’s new in flutter 3.7
    ● Introducing Dart 3 alpha
    ● Impeller
    ● What’s new - Flutter website
    ● Flutter forward - Youtube playlist
    

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