[Feature] map_iter #2830

Job	Run time
build-wheel-windows (3.8, 3.8)	2m 34s
build-wheel-linux (3.8, cp38-cp38, --extra-index-url https://download.pytorch.org/whl/cpu, "['cpu...	1m 8s
build-wheel-windows (3.9, 3.9)	2m 49s
build-wheel-linux (3.9, cp39-cp39, --extra-index-url https://download.pytorch.org/whl/cpu, "['cpu...	1m 3s
build-wheel-windows (3.10, 3.10.3)	3m 1s
build-wheel-linux (3.10, cp310-cp310, --extra-index-url https://download.pytorch.org/whl/cpu, "['...	1m 5s
build-wheel-windows (3.11, 3.11)	3m 4s
build-wheel-linux (3.11, cp311-cp311, --extra-index-url https://download.pytorch.org/whl/cpu, "['...	1m 9s
build-wheel-windows (3.12, 3.12)	3m 3s
build-wheel-linux (3.12, cp312-cp312, --extra-index-url https://download.pytorch.org/whl/cpu, "['...	1m 14s
test-wheel (linux, ubuntu-20.04, 3.8)	1m 1s
test-wheel (linux, ubuntu-20.04, 3.9)	1m 11s
test-wheel (linux, ubuntu-20.04, 3.10)	1m 1s
test-wheel (linux, ubuntu-20.04, 3.11)	50s
test-wheel (linux, ubuntu-20.04, 3.12)	53s
test-wheel-windows (3.8)	3m 7s
test-wheel-windows (3.9)	2m 13s
test-wheel-windows (3.10)	2m 10s
test-wheel-windows (3.11)	3m 8s
test-wheel-windows (3.12)	3m 9s
	38m 53s

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