C++ programming struct vector with multiple arguments and params as member [closed]

Question

Trying to create a struct that has a vector as a member, but unable to make it work if vector has multiple args.

Any ideas?

struct node {
    int         id;
    std::string name;
    bool        visited;
    int         state;
    std::vector <std::string, int> edges;
};

I'd like the vector to be of this type; std::vector <std::string, int> string and int.

This is the error:

/usr/local/Cellar/gcc/11.3.0/include/c++/11/bits/stl_vector.h:477:20: error: '_M_get_Tp_allocator' has not been declared in 'std::vector<std::__cxx11::basic_string<char>, int>::_Base'
  477 |       using _Base::_M_get_Tp_allocator;

Answer 1

std::vector holds a sequence of a single type.

e.g. std::vector<int> v_int holds a sequence of only integers.

There are types that can themselves hold multiple types. For example, a std::pair<std::string, int> holds both a string and an int.

It is possible to have a vector of pairs, if that is what you are trying to do.

std::vector<std::pair<std::string, int>> edges;