C++ how to copy a map to a vector [duplicate]

Answer 1

Assuming you want to copy the key and the value:

std::map m;


// Map gets populated 
// (...)


// Copying it to a new vector via the constructor
std::vector> v(m.begin(), m.end());


// Copying it to an existing vector, erasing the contents
v.assign(m.begin(), m.end());

// Copying it to the back of an existing vector
v.insert(v.end(), m.begin(), m.end());