Скачать или смотреть Dart Basics - Part 5 | Classes, Modifiers, Abstract, Sealed, Base, Final, Interface, Mixins

Dart Basics - Part 5 | Classes, Modifiers, Inheritance, Abstract, Sealed, Base, Final, Interface, Mixins | Flutter Course for Beginners

In this video, we dive deep into Dart classes and class modifiers — the foundation of object-oriented programming in Flutter. This lesson covers everything from basic class structures to advanced concepts like sealed classes and mixins, giving you a complete understanding of how Dart handles inheritance and class design.

What you’ll learn in this session:

Dart classes and object-oriented basics

Abstract classes and their implementation

Base classes for controlled inheritance

Final classes that cannot be extended or implemented outside their library

Interface and abstract interface classes

Sealed classes and restricted class hierarchies

Mixins and mixin classes for reusability

Private constructors and their usage in sealed and singleton patterns

Singleton class implementation with factory constructors

Rules and differences between base, final, abstract, interface, sealed, mixin, and mixin class

By the end of this video, you’ll understand when and why to use each Dart class modifier and how they shape robust, scalable Flutter applications.

This is Part 5 of the Dart Basics for Flutter Beginners series. Make sure to check out the earlier parts for a strong foundation before moving ahead.

Keywords: Dart classes, Dart class modifiers, Dart inheritance, abstract class, base class, final class, interface class, sealed class, mixin, singleton class, private constructor, Flutter beginners, Dart OOP