1
我需要将数据添加到我的地图。我做了这个功能:多个通话功能
CSupermarket CSupermarket::Store(string name, CDate x, int count) {
pair <CDate, int> p;
p = make_pair (x, count);
vector<pair<CDate, int >>::iterator it;
vector<pair<CDate, int > > v;
if (items[name].size()) {
v = items[name];
}
it = lower_bound (v.begin(), v.end(), p);
v.insert(it, p);
items[name] = v;
return * this;
}
我要这样称呼它:
CSupermarket s;
s . Store ("bread", CDate (2016, 4, 30), 100) .
Store ("butter", CDate (2016, 5, 10), 10) .
Store ("beer", CDate (2016, 8, 10), 50) .
Store ("bread", CDate (2016, 4, 25), 100) .
Store ("okey", CDate (2016, 7, 18), 5);
s . Store ("Coke", CDate (2016, 12, 31), 10);
但是,当我把这个,它仅增加了项目“面包”和“可乐”。请问,我该如何解决它,它会添加所有物品(面包,黄油,啤酒,okey,可乐)?
感谢
您需要通过引用从排序函数返回CSupermarket。 – TheFooBarWay