I start code with obj-c, however i am unable to discover a up-to-date doc(i khow now they use swift , however i nonetheless wish to be taught obj-c first). The doc “The Goal-C 2.0 Programming Language” at http://cagt.bu.edu/w/photos/b/b6/Goal-C_Programming_Language.pdf was launch in 2009, and it would not even assist ARC.Swift launch in 2014, so the place i can discover a doc launch after 2013-2014?

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