Struct enum_ptr::Compact

#[repr(transparent)]
pub struct Compact<T>where
    T: From<Compact<T>>,
    Compact<T>: From<T>,{ /* private fields */ }

The compact representation of T. Only one pointer wide.

Implementations

impl<T> Compact<T>where
    T: From<Compact<T>>,
    Compact<T>: From<T>,

pub fn inner(&self) -> *const u8

Get the inner data.

pub fn extract(self) -> T

An alias of T::from(self).

pub fn map_ref<U>(&self, func: impl FnOnce(&T) -> U) -> U

Examples

let mut foo: Compact<_> = Foo::A(&1).into();
foo.map_ref(|f: &Foo| println!("{f:?}"));

pub fn map_ref_mut<U>(&mut self, func: impl FnOnce(&mut T) -> U) -> U

Examples

let mut foo: Compact<_> = Foo::A(&1).into();
foo.map_ref_mut(|f: &mut Foo| println!("{f:?}"));

impl<T> Compact<T>where
    T: From<Compact<T>> + Clone,
    Compact<T>: From<T>,

pub fn extract_clone(&self) -> T

An alias of self.map_ref(|t| t.clone()).

Trait Implementations

impl<T: Clone> Clone for Compact<T>where
    T: From<Compact<T>>,
    Compact<T>: From<T>,

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for Compact<T>where
    T: From<Compact<T>>,
    Compact<T>: From<T>,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> Drop for Compact<T>where
    T: From<Compact<T>>,
    Compact<T>: From<T>,

fn drop(&mut self)

Executes the destructor for this type.

impl<T: Hash> Hash for Compact<T>where
    T: From<Compact<T>>,
    Compact<T>: From<T>,

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: Ord> Ord for Compact<T>where
    T: From<Compact<T>>,
    Compact<T>: From<T>,

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl<T: PartialEq> PartialEq<Compact<T>> for Compact<T>where
    T: From<Compact<T>>,
    Compact<T>: From<T>,

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: PartialOrd> PartialOrd<Compact<T>> for Compact<T>where
    T: From<Compact<T>>,
    Compact<T>: From<T>,

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T: Eq> Eq for Compact<T>where
    T: From<Compact<T>>,
    Compact<T>: From<T>,