040000 tree 50c336ccb679425250229a89ee8aa7709bfc91d6	2_general_utilities
040000 tree a61c435cdb393a25d018cb61159899eaa6b827bd	3_function_objects
040000 tree 9cf6f5901f80497cfb5df425580ded2237a0924c	4_metaprogramming
040000 tree 5c8a0858ce9f9f264041488e788d8670c5e3d43b	5_numerical_facilities
040000 tree 4a9f749eae14d11ab3d2f24dbcf59a2faf09d277	6_containers
040000 tree 4acc4ad6b16e115ec52900d51211ffef6bb6f36f	7_regular_expressions
040000 tree 5e9a275b827da000f6fda7a4b2d47d5841538bf9	8_c_compatibility
040000 tree b89fb915a8fbb362d201b438a258b0358e403f84	headers