dynamic id ng-repeat

Question

I am trying to set a dynamic id to my div within my ng-repeat. Let me show an example.

Answer 1

A use case I can think of is associating elements with their respective elements, as seen in http://jsfiddle.net/YqUAp/

Applied there is a pkozlowski.opensource's method

Option {{ $index }}

Though I'm unsure if this is the most effective method. (Even if only for readability)