NSArray和NSMutableArray的区别

NSArray和NSMutableArray的区别

[NSMutableArray arrayWithArray:@[@"结构上相对比较简单",@"用作cell平时的背景",@"如果没有实现该方法",@"然后需要实现三种类型的委托",@"+添加事情"]];

 

addObjectsFromArray

 

[[NSMutableArray alloc] init]; == [NSMutableArray new]; != [NSMutableArray array];

 

 

[_groupDefaults setObject:self.maData forKey:kShiQingValueKey];

The value parameter can be only property list objects: NSData, NSString, NSNumber, NSDate, NSArray, or NSDictionary. For NSArrayand NSDictionary objects, their contents must be property list objects