angular/angular.js — pull request #1399 by chrisirhc (2012-09-21 00:35:09+00:00)
Title: Add feature to use key for mapping in ngRepeat

The attribute npRepeatUseKey toggles whether to use the key (for arrays,
this would be the index, for objects, this would be the key) for mapping
values to their respective scopes.

Issue #1374