39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
#include <iostream>
|
|
#include <nlohmann/json.hpp>
|
|
|
|
using json = nlohmann::json;
|
|
|
|
int main()
|
|
{
|
|
// create JSON values
|
|
json j_null;
|
|
json j_boolean = true;
|
|
json j_number_integer = -17;
|
|
json j_number_unsigned = 42u;
|
|
json j_number_float = 23.42;
|
|
json j_object = {{"one", 1}, {"two", 2}};
|
|
json j_array = {1, 2, 4, 8, 16};
|
|
json j_string = "Hello, world";
|
|
|
|
// call operator value_t()
|
|
json::value_t t_null = j_null;
|
|
json::value_t t_boolean = j_boolean;
|
|
json::value_t t_number_integer = j_number_integer;
|
|
json::value_t t_number_unsigned = j_number_unsigned;
|
|
json::value_t t_number_float = j_number_float;
|
|
json::value_t t_object = j_object;
|
|
json::value_t t_array = j_array;
|
|
json::value_t t_string = j_string;
|
|
|
|
// print types
|
|
std::cout << std::boolalpha;
|
|
std::cout << (t_null == json::value_t::null) << '\n';
|
|
std::cout << (t_boolean == json::value_t::boolean) << '\n';
|
|
std::cout << (t_number_integer == json::value_t::number_integer) << '\n';
|
|
std::cout << (t_number_unsigned == json::value_t::number_unsigned) << '\n';
|
|
std::cout << (t_number_float == json::value_t::number_float) << '\n';
|
|
std::cout << (t_object == json::value_t::object) << '\n';
|
|
std::cout << (t_array == json::value_t::array) << '\n';
|
|
std::cout << (t_string == json::value_t::string) << '\n';
|
|
}
|