数组新增添法

数组新添加法

数组新添加法

NSMutableArray  *mArray = [NSMutableArray new];

    for (int i = 0; i < 3; i ++) {

        [mArray addObject:@[@"one",@"tow",@"three"][i]];

    }

输出mArray：@"one",@"tow",@"three"

 NSDictionary *tempDict = @{@"expand3":@{@"res":@{@"time": @"2013-10-31"}}};

  NSLog(@"expand3.res = %@ time = %@",[tempDict valueForKeyPath:@"expand3.res"],[tempDict valueForKeyPath:@"expand3.res.time"]);

输出@"2013-10-31"