Singleton in Dart

FooManager.dart

//In Dart
//You can make Singleton class easily.

class FooManager {
   final _inst = FooManager._internal();
   FooManager._internal();
   factory FooManager() => _inst;
   
   //for test
   testPrint(){
      print("test");
   }
}


//Usage

test(){

   FooManager().testPrint();
}