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Dart Null Safety: The Ultimate Guide to Non-Nullable Types
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Dart Null Safety: The Ultimate Guide to Non-Nullable Types
Andrea Bizzotto
41K subscribers • 17 videos on Hallway
- Recommended by 1 person: 1 in engineering communities.
- Presented by Andrea Bizzotto
Intermediate. Assumes working knowledge.
19K views6 years ago1 recommendation
Programming languagesLanguage design and type systemsFlutter and React Native
Andrea Bizzotto explains Dart null safety, covering non-nullable variables, flow analysis, the late keyword, and syntax changes.
Written tutorial here: 👇👇 codewithandrea.com/videos/2020-06-29-dart-null-safety-ultima… A complete tour of Null Safety & non-nullable types, the syntax changes they introduce in Dart 2.9, and how to use them in practice. HIGHLIGHTS - Intro - Null References: Some History - Dart: Sound Type System - Null Safety: Intro & Non-Nullable variables - Null Safety: Advantages - Nullable Variables - The Assertion Operator - Flow Analysis: Null Checks & Promotion - Flow Analysis: Definite Assignment - Using non-nullable variables with classes - Non-nullable named and positional arguments - Null-aware cascade operator - Null-aware subscript operator - The late keyword - Static and global variables - Conclusion Join my FREE email course to become a Flutter expert with the best resources, at your own pace: codewithandrea.com/newsletter/ Want more? Check out all my Flutter courses: 👇👇 codewithandrea.com/courses/ Happy coding!