when ▁Small t alk ▁performed ▁collection ) ▁to ▁render ▁the ▁entire ▁system ▁unus able . ▁Some ▁ 3 rd ▁party ▁implementations ▁have ▁added ▁this ▁feature ▁( most ▁not ably ▁GNU step ▁using ▁Bo e hm ), ▁and ▁Apple ▁has ▁implemented ▁it ▁as ▁of ▁Mac ▁OS ▁X ▁v 1 0 . 5 . ▁However , ▁in ▁more ▁recent ▁versions ▁of ▁mac OS ▁and ▁iOS , ▁garbage ▁collection ▁has ▁been ▁deprecated ▁in ▁favor ▁of ▁Autom atic ▁Reference ▁Count ing ▁( AR C ), ▁introduced ▁in ▁ 2 0 1 1 . ▁ ▁With ▁AR C , ▁the ▁compiler ▁inser ts ▁retain ▁and ▁release ▁calls ▁automatically ▁into ▁Object ive - C ▁code ▁based ▁on ▁static ▁code ▁analysis . ▁The ▁autom ation ▁rel ieves ▁the ▁programmer ▁of ▁having ▁to ▁write ▁in ▁memory ▁management ▁code . ▁AR C ▁also ▁adds ▁weak ▁references ▁to ▁the ▁Object ive - C ▁language . ▁ ▁Philosoph ical ▁differences ▁between ▁Object ive - C ▁and ▁C ++ ▁The ▁design ▁and ▁implementation ▁of ▁C ++ ▁and ▁Object ive - C ▁represent ▁fund ament ally ▁different ▁approaches ▁to ▁extending ▁C . ▁ ▁In ▁addition ▁to ▁C ' s ▁style ▁of ▁proced ural ▁programming , ▁C ++ ▁directly ▁supports ▁certain ▁forms ▁of ▁object - orient ed ▁programming , ▁generic ▁programming , ▁and ▁met ap ro gram ming . ▁C ++ ▁also ▁comes ▁with ▁a ▁large ▁standard ▁library ▁that ▁includes ▁several ▁container ▁classes . ▁Similarly , ▁Object ive - C ▁adds ▁object - orient ed ▁programming , ▁dynamic ▁typing , ▁and ▁reflection ▁to ▁C . ▁Object ive