Clear 1 field of Transform array

Questions & Answers
1

Hi there

I hope this is a small question. I have a multidimensional array that I declared as followed:

var things : Transform[,] = new Transform[10,20];

The array gets partially filled by Transforms. In the script I check, if a certain position is of the array is filled like this:

if(things[5,8]){
	//Do stuff
	}

This works like a charm so far. But now I need to make the same position “empty” again. For a “normal” array I found this:[http://docs.unity3d.com/Documentation/ScriptReference/Array.RemoveAt.html][1]
[1]: http://docs.unity3d.com/Documentation/ScriptReference/Array.RemoveAt.html

Is there a way to do the same with my array? Kinda like:

things[5,8].delete

When I destroy the gameObject of the Transform, the array is still filled.

Thanks for your help
mitti2000

2

A built-in array can’t be resized. RemoveAt will remove an element. That’s not possible with “real” arrays ( the JS Array class is not a real array ;)). If you just want to “clear” an element, set it to null:

things[5,8] = null;

Transform is a class and therefore a reference type. You just set the reference to null.

Btw: When you destroy the object the reference will also become null, but it’s delayed one frame.