<h2 id="heading-prefer-composition-over-inheritance">Prefer Composition over inheritance :</h2>
<ul>
<li>A favour composition over inheritance to achieve more flexible and maintainable code.
<ul>
<li><h3 id="heading-example">Example :</h3>
</li>
<li><pre><code class="lang-dart"> // Composition example
 class Engine {
 void start() {
 print('Engine started');
 }
 }

 class Car {
 final Engine _engine = Engine();

 void startCar() {
 _engine.start();
 print('Car started');
 }
 }

 void main() {
 Car myCar = Car();
 myCar.startCar();
 }
</code></pre>
</li>
<li><pre><code class="lang-dart"> Engine started
 Car started

 Exited.
</code></pre>
</li>
</ul>
</li>
</ul>

## Prefer Composition over inheritance :

* A favour composition over inheritance to achieve more flexible and maintainable code.
    
    * ### Example :
        
    * ```dart
        // Composition example
        class Engine {
          void start() {
            print('Engine started');
          }
        }
        
        class Car {
          final Engine _engine = Engine();
        
          void startCar() {
            _engine.start();
            print('Car started');
          }
        }
        
        void main() {
          Car myCar = Car();
          myCar.startCar();
        }
        ```
        
    * ```dart
        Engine started
        Car started
        
        Exited.
        ```

Dart Inheritance : Prefer Composition over Inheritance

Prefer Composition over inheritance :

Example :