Learn how to use the FloatingActionButton widget plus its latest Material Design adaptation and how to perform certain actions on tapping the FloatingActionButton.
This lesson also covers:
- @required optional arguments
- Null-aware operators
- Anonymous Functions / Lambdas / Closures
Null-aware operators in Dart: https://github.com/dart-lang/sdk/blob/master/CHANGELOG.md#language-changes-1
Anonymous Functions: https://dart.dev/guides/language/language-tour#anonymous-functions