Question

I’m not getting the syntax right. Lets say I have this…

#include <set>
...    
struct foo{
    int bar;
    string test;
};

struct comp{
    inline bool operator()(const foo& left,const foo& right){
        return left.bar < right.bar;
    }
};

int main(){
    std::multiset<foo,comp> fooset;
    std::multiset<foo,comp>::iterator it;

    ...//insert into fooset

    for (it = fooset.begin(); it != fooset.end(); it++){
        //how do i access int bar and string test of each element?
    }
    return 0;
}

How do i access int bar and string test of each element inside the for loop?

Thanks!

Answer 1

There is a good mnemonic rule that an iterator is a safe C++ abstraction for pointer.

So basically you access the elements through dereferencing syntax:

(*it).bar = 0;
it->test = "";