json/docs/examples/get__PointerType.cpp

22 lines
666 B
C++

#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
int main()
{
// create a JSON number
json value = 17;
// explicitly getting pointers
auto p1 = value.template get<const json::number_integer_t*>();
auto p2 = value.template get<json::number_integer_t*>();
auto p3 = value.template get<json::number_integer_t* const>();
auto p4 = value.template get<const json::number_integer_t* const>();
auto p5 = value.template get<json::number_float_t*>();
// print the pointees
std::cout << *p1 << ' ' << *p2 << ' ' << *p3 << ' ' << *p4 << '\n';
std::cout << std::boolalpha << (p5 == nullptr) << '\n';
}