CODEWITHSUNDEEP
c++vectordictionary
Paul Manta
Paul Manta

Reputation: 31577

Keep map values into vector

I have a set of objects that, during some initializations, I need to keep in an std::map, but after initialization I only need an std::vector. What efficient way is there to save the map's values into a vector?

I'm looking either for something with move semantics, or maybe there's some implementation of a map in Boost that would make this easier.

Upvotes: 2

Views: 413

Answers (1)

Björn Pollex
Björn Pollex

Reputation: 76788

Shouldn't this do the job:

your_vector.reserve(your_map.size());
for(auto& item : your_map) {
    your_vector.push_back(std::move(item.second));
}

Upvotes: 3

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