"快速枚举遍历字典是遍历字典中的key.(for (<#type *object#> in <#collection#>))
    for (id obc in dic) {
        NSLog(@"%@",obc);
    }
    for (id obj in dic) {
        NSLog(@"%@",[dic objectForKey:obj]);
    }
"

"快速枚举遍历字典是遍历字典中的key.(for (<#type *object#> in <#collection#>))
    for (id obc in dic) {
        NSLog(@"%@",obc);
    }
    for (id obj in dic) {
        NSLog(@"%@",[dic objectForKey:obj]);
    }
"