mdd/thirdparty/json/doc/examples

#include
#include
#include

using json = nlohmann::json;

int main()
{
// create a JSON object
json j =
{
{"pi", 3.141},
{"happy", true},
{"name", "Niels"},
{"nothing", nullptr},
{
"answer", {
{"everything", 42}
}
},
{"list", {1, 0, 2}},
{
"object", {
{"currency", "USD"},
{"value", 42.99}
}
}
};

// add new values
j["new"]["key"]["value"] = {"another", "list"};

// count elements
auto s = j.size();
j["size"] = s;

// pretty print with indent of 4 spaces
std::cout << std::setw(4) << j << '\n';
}