sampler of extension dart

a few superb samplers of extension methods found from many resources like Stackoverflow, twitter, medium, etc.

List of method:

method	article
Map Sorting	Map Sorting — Dart extension#1
Neumorphism	Neumorphism Widget— Dart extension#2
Responsive	Responsive Layout with BuildContext — Dart extension#3
Widget Coordinates	How to Get Widget Coordinates in Flutter UI — Dart extension#4
List Update	Update Single Item in Flutter List — Dart Extension#5
Describe Timestamp	Describing Timestamp in Flutter - Dart Extension#6

Contrib

Do you have an awesome extension method too? Want to share your extension method? You can open PR to share your method. Its good if you have an example too. Runnable on dartpad or linked any repository.

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