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nlohmannjson/doc/examples/to_bson.cpp

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#include <iostream>
#include <iomanip>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
int main()
{
// create a JSON value
json j = R"({"compact": true, "schema": 0})"_json;
// serialize it to BSON
std::vector<uint8_t> v = json::to_bson(j);
// print the vector content
for (auto& byte : v)
{
std::cout << "0x" << std::hex << std::setw(2) << std::setfill('0') << (int)byte << " ";
}
std::cout << std::endl;
}