json/docs/examples/operator_array__keytype_con...

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C++

#include <iostream>
#include <string_view>
#include <nlohmann/json.hpp>
using namespace std::string_view_literals;
using json = nlohmann::json;
int main()
{
// create a JSON object
const json object =
{
{"one", 1}, {"two", 2}, {"three", 2.9}
};
// output element with key "two"
std::cout << object["two"sv] << '\n';
}