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- #include <iostream>
- #include <iomanip>
- #include <nlohmann/json.hpp>
- using json = nlohmann::json;
- int main()
- {
- // create two JSON objects
- json o1 = R"( {"color": "red", "price": 17.99} )"_json;
- json o2 = R"( {"color": "blue", "speed": 100} )"_json;
- // add all keys from o2 to o1 (updating "color")
- o1.update(o2.begin(), o2.end());
- // output updated object o1
- std::cout << std::setw(2) << o1 << '\n';
- }
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