json/Reference.md

Reference

Types and default values

JSON type	value_type	C++ type	type alias	default value
null	value_type::null	nullptr_t	-	nullptr
string	value_type::string	std::string	JSON::string_t	""
number (integer)	value_type::number	int	JSON::number_t	0
number (floating point)	value_type::number_float	double	JSON::number_float_t	0.0
array	value_type::array	std::array<JSON>	JSON::array_t	{}
object	value_type::object	std::map<std::string, JSON>	JSON::object_t	{}

Conversions

There are only a few type conversions possible:

• An integer number can be translated to a floating point number (e.g., by calling get<double>()).
• A floating pointnnumber can be translated to an integer number (e.g., by calling get<int>()). Note the number is truncated and not rounded, ceiled or floored.
• Any value but JSON objects can be translated into an array. The result is a singleton array that consists of the value before.
• Any other conversion will throw a std::logic_error exception.