Glib::Variant< double > Class Reference

Specialization of Glib::Variant containing a double type. More...

#include <glibmm/variant_basictypes.h>

Inheritance diagram for Glib::Variant< double >:

Public Types
using	CType = gdouble

Public Member Functions
	Variant ()
	Default constructor.
	Variant (GVariant *castitem, bool take_a_reference=false)
	GVariant constructor.
double	get () const
	Gets the value of the Glib::Variant<double>.
Public Member Functions inherited from Glib::VariantBase
	VariantBase ()
	Constructs an invalid object.
	VariantBase (GVariant *castitem, bool make_a_copy=false)
	VariantBase (const VariantBase &src)
VariantBase &	operator= (const VariantBase &src)
	VariantBase (VariantBase &&other) noexcept
VariantBase &	operator= (VariantBase &&other) noexcept
	~VariantBase () noexcept
void	swap (VariantBase &other) noexcept
GVariant *	gobj ()
const GVariant *	gobj () const
GVariant *	gobj_copy () const
	Provides access to the underlying C instance. The caller is responsible for freeing it. Use when directly setting fields in structs.
	operator bool () const
	Test whether the Variant has an underlying instance.
void	init (const GVariant *cobject, bool take_a_reference=false)
	Replace the underlying GVariant.
VariantType	get_type () const
	Determines the type of value.
std::string	get_type_string () const
	Returns the type string of value.
bool	is_floating () const
	Checks whether value has a floating reference count.
bool	is_of_type (const VariantType & type) const
	Checks if a value has a type matching the provided type.
bool	is_container () const
	Checks if value is a container.
GVariantClass	classify () const
	Classifies value according to its top-level type.
gsize	get_size () const
	Determines the number of bytes that would be required to store value with g_variant_store().
gconstpointer	get_data () const
	Returns a pointer to the serialized form of a Variant instance.
Glib::RefPtr< const Glib::Bytes >	get_data_as_bytes () const
	Returns a pointer to the serialized form of a Variant instance.
void	store (gpointer data) const
	Stores the serialized form of value at data.
Glib::ustring	print (bool type_annotate=false) const
	Pretty-prints value in the format understood by g_variant_parse().
guint	hash () const
	Generates a hash value for a Variant instance.
bool	equal (const VariantBase &other) const
	Checks if *this and other have the same type and value.
bool	operator== (const VariantBase &other) const
	Checks if *this and other have the same type and value.
bool	operator!= (const VariantBase &other) const
	Checks if *this and other have the same type and value.
bool	operator< (const VariantBase &other) const =delete
	Ordering relational operators.
bool	operator<= (const VariantBase &other) const =delete
	See operator<().
bool	operator> (const VariantBase &other) const =delete
	See operator<().
bool	operator>= (const VariantBase &other) const =delete
	See operator<().
void	get_normal_form (VariantBase &result) const
	Gets a VariantBase instance that has the same value as this variant and is trusted to be in normal form.
bool	is_normal_form () const
	Checks if value is in normal form.
void	byteswap (VariantBase &result) const
	Performs a byteswapping operation on the contents of this variant.
bool	check_format_string (const std::string & format_string, bool copy_only=false) const
	Checks if calling g_variant_get() with format_string on value would be valid from a type-compatibility standpoint.
template<typename ValueType >
ValueType	get_dynamic () const
	Cast to a specific variant type and get the value.

Static Public Member Functions
static const VariantType &	variant_type ()
	Gets the Glib::VariantType.
static Variant< double >	create (double data)
	Creates a new Glib::Variant<double>.
Static Public Member Functions inherited from Glib::VariantBase
template<class V_CastTo >
static V_CastTo	cast_dynamic (const VariantBase &v)
	Cast to a specific variant type.
template<>
VariantContainerBase	cast_dynamic (const VariantBase &v)

Additional Inherited Members
Protected Attributes inherited from Glib::VariantBase
GVariant *	gobject_
Related Symbols inherited from Glib::VariantBase
template<typename T >
Variant< T >	create_variant (const T &data)
	Creates a Glib::Variant instance.
void	swap (VariantBase &lhs, VariantBase &rhs) noexcept
Glib::VariantBase	wrap (GVariant *object, bool take_copy=false)
	A Glib::wrap() method for this object.

Detailed Description

Specialization of Glib::Variant containing a double type.

Member Typedef Documentation

CType

using Glib::Variant< double >::CType = gdouble

Constructor & Destructor Documentation

Variant() [1/2]

Glib::Variant< double >::Variant ( )

inline

Default constructor.

Variant() [2/2]

Glib::Variant< double >::Variant ( GVariant< double > *  castitem, bool  take_a_reference = false  )

inlineexplicit

GVariant constructor.

Parameters

castitem	The GVariant to wrap.
take_a_reference	Whether to take an extra reference of the GVariant or not (not taking one could destroy the GVariant with the wrapper).

Member Function Documentation

create()

static Variant< double > Glib::Variant< double >::create ( double  data )

static

Creates a new Glib::Variant<double>.

Parameters

data	The value of the new Glib::Variant<double>.

Returns

The new Glib::Variant<double>.

get()

double Glib::Variant< double >::get

(

)

const

Gets the value of the Glib::Variant<double>.

Returns

The double value of the Glib::Variant<double>.

variant_type()

static const VariantType & Glib::Variant< double >::variant_type ( )

static

Gets the Glib::VariantType.

Returns

The Glib::VariantType.