C++ std::multiset返回值 has no member named ‘first’

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error: ‘std::multiset<>::iterator {aka struct std::_Rb_tree_const_iterator<>}’ has no member named ‘first’
 

multiset返回的直接是迭代器，所以没有first

// INTEGER EXAMPLE 
// CPP program to illustrate 
// Implementation of emplace() function 
#include <iostream> 
#include <set> 
using namespace std; int main() 
{ multiset<int> mymultiset{}; auto result = mymultiset.emplace(3); cout << ' ' << (*result); // printing the multiset for (auto it = mymultiset.begin(); it != mymultiset.end(); ++it) cout << ' ' << *it; return 0; 
}

multiset::emplace - 游戏蛮牛 - C++中文翻译用户手册

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