json/doc/examples/get_ptr.cpp
Niels 40312fb07b worked on #91
- implemented `get_ptr` function to return pointer to value member
- overworked `get` function to support pointer types
- added test cases
- added documentation (see
http://nlohmann.github.io/json/classnlohmann_1_1basic__json.html) with
examples
2015-06-24 15:16:32 +02:00

21 lines
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C++

#include <json.hpp>
using namespace nlohmann;
int main()
{
// create a JSON boolean
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';
}