json之size使用注意事项

json的size在定义中如下说明：

ArrayIndex	size () const
	Number of values in array or object.

对于下面的数据，quote的size为3

{"query":{"count":3,"created":"2014-04-22T05:19:44Z","lang":"zh-cn","results":{"quote":[{"Symbol":"600016.ss","Date":"2014-04-21","Open":"7.77","High":"7.85","Low":"7.71","Close":"7.71","Volume":"84198100","Adj_Close":"7.71"},{"Symbol":"600016.ss","Date":"2014-04-18","Open":"7.74","High":"7.90","Low":"7.62","Close":"7.86","Volume":"156329600","Adj_Close":"7.86"},{"Symbol":"600016.ss","Date":"2014-04-17","Open":"7.85","High":"7.87","Low":"7.71","Close":"7.80","Volume":"60689100","Adj_Close":"7.80"}]}}}

然而，对于下面的数据，quote的size为8（期待为1？）

{"query":{"count":1,"created":"2014-04-22T05:20:17Z","lang":"zh-cn","results":{"quote":{"Symbol":"600016.ss","Date":"2014-04-21","Open":"7.77","High":"7.85","Low":"7.71","Close":"7.71","Volume":"84198100","Adj_Close":"7.71"}}}}

对于例子数据来说，有count做标识可以区分，如果没有这个标识，最好将第二项也做成用“[ ]” 封装。