What's the right syntax for an implicit cast/inline cast operator? · Issue #193 · dart-lang/language · GitHub
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dart - _CastError (type 'String' is not a subtype of type 'int?' in type cast) Flutter - Stack Overflow
![dart - Casting value results in, type 'Null' is not a subtype of type 'int' in type cast, error in Flutter - Stack Overflow dart - Casting value results in, type 'Null' is not a subtype of type 'int' in type cast, error in Flutter - Stack Overflow](https://i.stack.imgur.com/MWohB.jpg)
dart - Casting value results in, type 'Null' is not a subtype of type 'int' in type cast, error in Flutter - Stack Overflow
![Null Safety] add a smart-cast to non-nullable inside condition · Issue #1716 · dart-lang/language · GitHub Null Safety] add a smart-cast to non-nullable inside condition · Issue #1716 · dart-lang/language · GitHub](https://user-images.githubusercontent.com/12999702/123917383-6437eb80-d98b-11eb-8bfc-8096f556b643.png)