Struct core_foundation::number::CFNumber

pub struct CFNumber(_);

An immutable numeric value.

Methods

impl CFNumber

fn from_i32(value: i32) -> CFNumber

fn to_i64(&self) -> Option<i64>

fn to_f64(&self) -> Option<f64>

fn from_i64(value: i64) -> CFNumber

fn from_f64(value: f64) -> CFNumber

Trait Implementations

impl Drop for CFNumber

fn drop(&mut self)

A method called when the value goes out of scope.

impl TCFType<CFNumberRef> for CFNumber

fn as_concrete_TypeRef(&self) -> CFNumberRef

Returns the object as its concrete TypeRef.

unsafe fn wrap_under_get_rule(reference: CFNumberRef) -> CFNumber

Returns an instance of the object, wrapping the underlying CFTypeRef subclass. Use this when following Core Foundation's "Get Rule". The reference count is bumped.

fn as_CFTypeRef(&self) -> CFTypeRef

Returns the object as a raw CFTypeRef. The reference count is not adjusted.

unsafe fn wrap_under_create_rule(obj: CFNumberRef) -> CFNumber

Returns an instance of the object, wrapping the underlying CFTypeRef subclass. Use this when following Core Foundation's "Create Rule". The reference count is not bumped.

fn type_id() -> CFTypeID

Returns the type ID for this class.

fn as_CFType(&self) -> CFType

Returns the object as a wrapped CFType. The reference count is incremented by one.

fn retain_count(&self) -> CFIndex

Returns the reference count of the object. It is unwise to do anything other than test whether the return value of this method is greater than zero.

fn type_of(&self) -> CFTypeID

Returns the type ID of this object.

fn show(&self)

Writes a debugging version of this object on standard error.

fn instance_of<OtherConcreteTypeRef, OtherCFType: TCFType<OtherConcreteTypeRef>>(&self)
                                                                                 -> bool

Returns true if this value is an instance of another type.