When to use GameObject and Class field?

Unity Engine
1

Sometimes, I find the need to reference a game object that contains a script with a Class1

In the script that references this object should I write

public GameObject foo

And then get the Class1 by

foo.GetComponent()

or

should I write

public Class1 foo

And get the game object by

foo.gameObject

Which one is best practice?

2

Both. Keep a reference to the class, and the gameobject, and don’t use get component more than once, that way their both readily available to access through code.

Though if I remember correctly, the something.gameObject member is a cached reference, so it’d be probably the exact same performance. I could be wrong about that though.

Anyway I keep refs to both, just for easier use later, less typing haha.