Rate split_pos split grep_split substr_map substr_loop unpack regex regexo split_pos 7295/s -- -57% -60% -68% -77% -78% -100% -100% split 16900/s 132% -- -7% -26% -47% -50% -100% -100% grep_split 18241/s 150% 8% -- -20% -43% -46% -100% -100% substr_map 22883/s 214% 35% 25% -- -29% -32% -99% -100% substr_loop 32139/s 341% 90% 76% 40% -- -4% -99% -99% unpack 33495/s 359% 98% 84% 46% 4% -- -99% -99% regex 4342185/s 59421% 25593% 23705% 18876% 13411% 12864% -- -6% regexo 4596612/s 62909% 27098% 25099% 19988% 14202% 13623% 6% --