What is the best way to clear an array of Components?

[ikelaiah]

I created an array to store all cameras in the scene as

var cameras : Camera[];

function Start() {
     cameras = GameObject.FindObjectsOfType(Camera) as Camera[];
}

I’d like to clear the content of cameras. One way I can think of is;

function ClearCameras(cams : Camera[]) {
     for(var c : Camera in cams) {
          c = null;
     }
}

Is there a shorter way of doing this? Just imagine, having arrays that contain cameras, car, etc, would require significant amount of repetition of code.

---

EDIT

See replies of @vexe and @fafase below. Take the important note below about passing target array (to be cleared) into an extension method, DO NOT use ref. I did not want to return a new array out of the extension method.

[vexe]

If you were using a list you could do list.Clear(); - If it’s just a regular array, just null the whole thing: cameras = null; as long as you don’t have other references to the array, it will get garbage collected. Or just new it up again: cameras = new Camera; - (In C++, if you do cameras = null; that will be a memory leak since there’s no garbage collection, so you have to go over each element and free it)

[fafase]

There is no shorter way to perform your action. You could though create an extension method so that it is done in one line:

public static class Utility{
   public static Object[] ClearArray(this Object[] array){
       foreach(Object obj in array)
       {
           if(obj != null)
               Destroy(obj);
       }
       return null;
   }
}

then use:

cameras = cameras.ClearArray();

Note: you have to do this little trick above of assigning into the array because you cannot use extension method with a reference of the object.