json/doc/examples/swap__string_t.cpp

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#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
int main()
{
// create a JSON value
json value = { "the good", "the bad", "the ugly" };
// create string_t
json::string_t string = "the fast";
// swap the object stored in the JSON value
value[1].swap(string);
// output the values
std::cout << "value = " << value << '\n';
std::cout << "string = " << string << '\n';
}