iOS Programming （第四版英文版）- The Big Nerd Ranch Guide 4ed

第四版 更新情况 What has Changed in the Fourth Edition? This edition assumes that the reader is using Xcode 5 and running applications on an iOS 7 device or simulator. We have adopted a more modern style of Objective-C in this edition . We use properties, dotnotation , auto-synthesized instance variables, t h e n ew l i t eral s, an d su bscript in g ex t en sively . We al so u se block s m ore. Apple con t in u es t o evolve iOS, an d we h ave eag erly added coverag e of block -based an im at ion s, Au t o L ay ou t , an d NSURLSession t o t h e book . Besides t h ese obviou s ch an g es, we m ade t h ou san ds of t in y im provem en t s t h at were in spi red by qu est ion s f rom ou r readers an d ou r st u den t s. Every ch apt er of t h i s book i s ju st a l i t t le better than the corresponding chapter from the third edition .