Dart - The basics in pratice

product.dart

class Product { 
 // Attributes with private privacy level 
 int _id; 
 String _title; 
 bool _active; 
 double _price;
  
 // Function definition like a constructor
 Product(this._title, this._active, this._price); 
  
 // Function definition like a getter 
 int get id => _id; 
 double get price => _price; 
 bool get active => _active; 
 String get title => _title; 
}