Generic Method help

Questions & Answers
1

Hello all ,
so I am trying to make a game and I need this piece of code:

GameObject obj = (GameObject)Instantiate(pooledObject);
obj.SetActive(false);
pooledObjects.Add(obj);

this code is repeated more than one time , so I thought of putting it into a function (AddItem)
However, in some cases , i need to use the obj variable and some others not
so I need to sometimes return obj and function is as Gameobject and some other times I need is as void as it doesn’t return anything.
I recall learning something called templates in Advance Programming course in C++
After some search I found that It is referenced as Generic functions in C# / Unity

so far I got this :

public T fillList<T>(T param)
{
    GameObject obj = (GameObject)Instantiate(pooledObject);
    obj.SetActive(false);
    pooledObjects.Add(obj);
   // return obj;
}

now my problem is that return obj is giving me an error , i am very unfamiliar with the syntax and way of writing generic functions , how can I remove the param and return the obj when it is called as Gameobject?

Can anyone please help?
Thanks for all in advance!

2

In C#, you can call any method as though it were of type void.

public GameObject AddItem()
{
    GameObject obj = (GameObject)Instantiate(pooledObject);
    obj.SetActive(false);
    pooledObjects.Add(obj)
    return obj;
}

You don’t have to get the object returned by this, but you can if you want! Either of these will work:

// As a void
this.AddItem();

// As a GameObject
GameObject newItem = this.AddItem();