<h2 id="heading-redirecting-constructors">Redirecting constructors</h2>
<ul>
<li>Sometimes a constructor's only purpose is to redirect to another constructor in the same class. A redirecting constructor's body is empty, with the constructor call (using <code>this</code> instead of the class name) appearing after a colon (:).
</li>
<li><pre><code class="lang-dart"> class Point {
 double x, y;

 // The main constructor for this class.
 Point(this.x, this.y);

 // Delegates to the main constructor.
 Point.alongXAxis(double x) : this(x, 0);
 }
</code></pre>
</li>
</ul>

## Redirecting constructors

* Sometimes a constructor's only purpose is to redirect to another constructor in the same class. A redirecting constructor's body is empty, with the constructor call (using `this` instead of the class name) appearing after a colon (:).
    
* ```dart
    class Point {
      double x, y;
    
      // The main constructor for this class.
      Point(this.x, this.y);
    
      // Delegates to the main constructor.
      Point.alongXAxis(double x) : this(x, 0);
    }
    ```

Dart : Redirecting constructors

Redirecting constructors