What would be a simple way to iterate through and store all keys of boost::bimap into a vector. Would it work just like we would for std::map
CodePudding user response:
This would be one way:
#include <boost/bimap.hpp>
#include <vector>
template<class L, class R>
std::vector<L> to_vector(const boost::bimap<L, R>& bm) {
std::vector<L> rv;
rv.reserve(bm.size()); // or bm.size() * 2 if you want to store the right keys too
for(auto&[l, r] : bm) { // loop through all the entries in the bimap
rv.push_back(l); // store the left key
// rv.push_back(r); // if you want to store the right key too
}
return rv;
}
Then calling it:
auto vec = to_vector(your_bimap);