WhisperCom/doc/examples/get_ptr.cpp
Dominik Meyer cc002ebfbb Squashed 'libs/json/' content from commit f42a74b8
git-subtree-dir: libs/json
git-subtree-split: f42a74b8f53cc308647123d49d33d1c8122e3f42
2021-08-22 01:28:31 +02:00

22 lines
641 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.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';
}