mirror of
https://github.com/nlohmann/json.git
synced 2024-08-21 12:32:27 +02:00
- 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
50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
#include <json.hpp>
|
|
#include <unordered_map>
|
|
|
|
using namespace nlohmann;
|
|
|
|
int main()
|
|
{
|
|
// create a JSON value with different types
|
|
json json_types =
|
|
{
|
|
{"boolean", true},
|
|
{
|
|
"number", {
|
|
{"integer", 42},
|
|
{"floating-point", 17.23}
|
|
}
|
|
},
|
|
{"string", "Hello, world!"},
|
|
{"array", {1, 2, 3, 4, 5}},
|
|
{"null", nullptr}
|
|
};
|
|
|
|
// use implicit conversions
|
|
bool v1 = json_types["boolean"];
|
|
int v2 = json_types["number"]["integer"];
|
|
short v3 = json_types["number"]["integer"];
|
|
float v4 = json_types["number"]["floating-point"];
|
|
int v5 = json_types["number"]["floating-point"];
|
|
std::string v6 = json_types["string"];
|
|
std::vector<short> v7 = json_types["array"];
|
|
std::unordered_map<std::string, json> v8 = json_types;
|
|
|
|
// print the conversion results
|
|
std::cout << v1 << '\n';
|
|
std::cout << v2 << ' ' << v3 << '\n';
|
|
std::cout << v4 << ' ' << v5 << '\n';
|
|
std::cout << v6 << '\n';
|
|
|
|
for (auto i : v7)
|
|
{
|
|
std::cout << i << ' ';
|
|
}
|
|
std::cout << "\n\n";
|
|
|
|
for (auto i : v8)
|
|
{
|
|
std::cout << i.first << ": " << i.second << '\n';
|
|
}
|
|
}
|