Tutorial to or from json

With pre::json you can serialize or deserialize any C++ Type to JSON, even composite and aggregate types.

Serialize anything

You can serialize anything to json.

See :

• Full example
• Extended examples

 #include <iostream>
 #include <pre/json/to_json.hpp> 

 struct customer {
   std::string name;
   size_t money_spent; 
   std::vector<std::string> interests;
 };

 BOOST_FUSION_ADAPT_STRUCT(customer,
   name,
   money_spent,
   interests)

...

customer my_customer{
  "Mr. Dupond",
  1000,
  {"sport articles", "food", "tools"}
};

std::cout << pre::json::to_json(my_customer) << std::endl;

Deserialize anything

You can deserialize to any type from json.

See :

• Full example
• Extended examples

#include <iostream>
#include <pre/json/from_json.hpp> 

struct customer {
  std::string name;
  size_t money_spent; 
  std::vector<std::string> interests;
};

BOOST_FUSION_ADAPT_STRUCT(customer,
  name,
  money_spent,
  interests)

...

std::string string_to_deserialize = 
  "{\"interests\":[\"sport articles\"], \"money_spent\":50, \"name\":\"Mrs. Fraulein\"}";

customer my_customer = pre::json::from_json<customer>(string_to_deserialize);

std::cout << "Customer " << my_customer.name << " spent " <<
  my_customer.money_spent << std::endl;