json/doc/examples/get_ptr.cpp
Niels Lohmann 504012a3db
📝 cleanup after #650
As <iostream> is not included in json.hpp any more, all code examples need to include <iostream> now.
2017-07-09 11:51:38 +02:00

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