英文原版Effective ObjectiveC 2 0 1st Edition

52SpecificWaystoImproveYouriOSandOSXPrograms willhelpyouharnessallofObjective-C’sexpressivepowertowriteOSXoriOScodethatworkssuperblywellinproductionenvironments.Usingtheconcise,scenario-drivenstylepioneeredinScottMeyers’best-sellingEffectiveC,MattGallo