value Class

Artigo
04/28/2015

A JSON value represented as a C++ class.

Warning

This topic contains information for the C++ REST SDK 1.0 (codename "Casablanca"). If you are using a later version from the Codeplex Casablanca web page, then use the local documentation at http://casablanca.codeplex.com/documentation.

class value;

Members

Public Typedefs

Name	Description
const_iterator	Defined in support for STL algorithms that rely on iterators. This identifies the type of the const iterator.
const_reverse_iterator	Defined in support for STL algorithms that rely on iterators. This identifies the type of the const iterator.
element_vector	Typedef for the standard container holding array elements. This is used when constructing an array from existing objects.
field_map	Typedef for the standard container holding fields. This is used when constructing an object from existing objects.
iterator	Defined in support for STL algorithms that rely on iterators. This identifies the type of the non-const iterator.
reverse_iterator	Defined in support for STL algorithms that rely on iterators. This identifies the type of the non-const iterator.

Public Enumerations

Name	Description
value::value_type Enumeration	This enumeration represents the various kinds of JSON values.

Public Constructors

Name	Description
value::value Constructor	Overloaded. Constructor creating a null value

Public Methods

Name	Description
value::array Method	Overloaded. Create an empty JSON array
value::as_bool Method	Convert the JSON value to a C++ bool, if and only if it is a Boolean value.
value::as_double Method	Convert the JSON value to a C++ double, if and only if it is a number value. Throws json_exception if the value is not a number
value::as_integer Method	Convert the JSON value to a C++ integer, if and only if it is a number value. Throws json_exception if the value is not a number
value::as_string Method	Convert the JSON value to a C++ STL string, if and only if it is a string value.
value::begin Method	Gets the beginning iterator element for a composite value.
value::boolean Method	Create a Boolean value
value::cbegin Method	Gets the beginning const iterator element for a composite value.
value::cend Method	Gets the end const iterator element for a composite value.
value::crbegin Method	Get the beginning const reverse iterator element for a composite value.
value::crend Method	Get the end const reverse iterator element for a composite value.
value::end Method	Gets the end iterator element for a composite value.
value::is_array Method	Is the current value an array?
value::is_boolean Method	Is the current value a Boolean value?
value::is_null Method	Is the current value a null value?
value::is_number Method	Is the current value a number value?
value::is_object Method	Is the current value an object?
value::is_string Method	Is the current value a string value?
value::null Method	Creates a null value
value::number Method	Overloaded. Creates a number value
value::object Method	Overloaded. Create an object value
value::parse Method	Overloaded. Constructor creating a JSON value from an input stream, by parsing its contents.
value::rbegin Method	Gets the beginning reverse iterator element for a composite value.
value::rend Method	Gets the end reverse iterator element for a composite value.
value::serialize Method	Overloaded. Write the current JSON value as a double-byte string to a stream instance.
value::size Method	How many children does the value have?
value::string Method	Create a string value
value::to_string Method	Serialize the current JSON value to a C++ string.
value::type Method	Access the type of JSON value the current value instance is

Public Operators

Name	Description
value::operator!= Operator	Compare two JSON values for inequality.
value::operator[] Operator	Overloaded. Access a field of a JSON object.
value::operator= Operator	Overloaded. Assignment operator.
value::operator== Operator	Compare two JSON values for equality.

Requirements

Header: json.h

Namespace: web::json

Compartilhar via