Flutter / Dart basic > Flutter/Dart/Node

EdgeInsets class  - https://api.flutter.dev/flutter/painting/EdgeInsets-class.html

const EdgeInsets.all(8.0) //margin on all sides

const EdgeInsets.symmetric(vertical: 8.0) //pixel margin above and below, no horizontal margins

const EdgeInsets.only(left: 40.0) //Left margin indent of 40 pixels

https://dart.dev/guides/language/effective-dart/documentation 

{} : Map  -------  [] : List

Map<K, V> constructor 

https://api.flutter.dev/flutter/dart-core/Map/Map.html

List<E> constructor

https://api.flutter.dev/flutter/dart-core/List/List.html

/// Check if dark mode theme is enable
bool get isDarkMode => (theme.brightness == Brightness.dark);

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