What's better? notifyDataSetChanged or notifyItemChanged in loop?

Question

So I have an activity with RecyclerView and I want to change TextView of every item in the RecyclerView by pressing button that has

Answer 1

I've noticed that notifyItemChanged(mPos) triggers onBindVieHolder for corresponding position even it's currently not visible.

For me, calling it in a loop for all elements was more costly than notifyDatasetChanged which redrawn only visible ones.

So be careful with large datasets.