GetComponent from referenced object overhead

Questions & Answers
1

What would be the cost of doing this. It seems efficient to me. The object is referenced as a variable. Then when required, a script attached to it is accessed by name using GetComponent() and some action is taken. I don’t see any searching to be required.

2

you can store all references for future use like this:

public GameObject myObj;
private Transform myTransform;
private MyScript myScript;
void Start()
{
  myTransform = myObj.transform;
  myScript = myObj.GetComponent();
}

if you have a trigger, you also can store local references or simple implement OnTriggerEnter in script you need reference to.