rapidjson::Value

rapidjson::Value is a class in the RapidJSON library that represents a JSON value. It can store any valid JSON value, such as null, boolean, number, string, array, or object. It is designed to be lightweight and efficient, with a small memory footprint and fast parsing and serialization performance.

The rapidjson::Value class provides a number of methods for accessing and modifying the stored JSON value, including GetBool(), GetInt(), GetDouble(), GetString(), GetArray(), GetObject(), and more. It also supports iteration over arrays and objects using C++11 range-based for loops.

Here is an example of creating a rapidjson::Value object and setting its value to a JSON object with two key-value pairs:

rapidjson::Document doc;
doc.SetObject();

rapidjson::Value key1("name", doc.GetAllocator());
rapidjson::Value val1("John", doc.GetAllocator());
doc.AddMember(key1, val1, doc.GetAllocator());

rapidjson::Value key2("age", doc.GetAllocator());
rapidjson::Value val2(30);
doc.AddMember(key2, val2, doc.GetAllocator());

This code creates a new JSON object with the keys "name" and "age" and sets their values to "John" and 30, respectively. The rapidjson::Value objects for the keys and values are created using the document's allocator, which manages memory allocation for the JSON values. The AddMember() method is used to add the key-value pairs to the object.