void Date::set(const WeakString &wStr)
{
WeakString val = wStr.trim();
int year, month, date;
//시분초까지 있을 때
if (val.find(" ") != std::string::npos)
val = val.between(std::string(), " ");
//년월일 설정
vector<WeakString> &ymdVec = val.split("-");
year = stoi(ymdVec[0].str());
month = stoi(ymdVec[1].str());
date = stoi(ymdVec[2].str());
set(year, month, date);
}