Add `range_iterator` (#161800)
Summary:
X-link: https://github.com/pytorch/pytorch/pull/161800
Approved by: https://github.com/anijain2305
ghstack dependencies: #161799
Reviewed By: jeanschmidt
Differential Revision: D81657056
fbshipit-source-id: 5a92b6d3b621f872e06673166448a66d5960aec0
Author
generatedunixname499836121
