關於陣列的複製問題------淺拷貝，深拷貝
阿新 • • 發佈：2019-01-31
深度複製陣列：
NSArray *mArray1 = [NSArray arrayWithObjects:[NSMutableString stringWithString:@"a"],@"b",@"c",nil];
NSMutableArray *mArrayMCopy1 = [[NSMutableArray alloc] initWithArray:mArray1 copyItems:YES];
NSLog(@"mArray1 address:%p",mArray1);
NSLog(@"mArrayMCopy1 address:%p", mArrayMCopy1);
NSLog(@"The first object address in mArray1:%p", [mArray1 objectAtIndex:0]);
NSLog(@"The first object address in mArrayMCopy1:%p", [mArrayMCopy1 objectAtIndex:0]);
注意，數組裡面的物件需要實現NSCopying協議.