040000 tree 53681b7cbd821e8c459fcc8def3f8b7e6488b64b	function
040000 tree 130fd1d252a891f36d217ecd8166375dee7a948a	functional
040000 tree d3a42ebe1192fa4894b003934de3001648141356	smart_ptr
040000 tree c0478fd43d3a627e7cf47cb3dc51a678ee40674d	test