Struct static_cow::CowPhantom

pub struct CowPhantom<'a, B>where
    B: ?Sized,{ /* private fields */ }

A zero-sized type which implements IntoOwning.

Structures with fields that are generic over StaticCow<'a, B> often have no fields that directly mention 'a or B, so they need add a phantom in order to placate the type checker, and the structure’s to_owning and into_owning methods will need to change the phantom’s lifetime parameter. CowPhantom will do the right thing in this respect so that you can simply call to_owning/into_owning on it just like you would all the other fields in your structure.

Trait Implementations

impl<'a, B> Debug for CowPhantom<'a, B>where
    B: ?Sized + Debug,

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

Formats the value using the given formatter.

impl<'a, B> Default for CowPhantom<'a, B>where
    B: 'a + ?Sized,

fn default() -> Self

Returns the “default value” for a type.

impl<'a, B> Hash for CowPhantom<'a, B>where
    B: ?Sized + Hash,

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<'a, 'o, B> IntoOwning<'o> for CowPhantom<'a, B>where
    B: 'o + ?Sized,

fn into_owning(self) -> Self::Owning

Converts an object which owns its contents into one which borrows them.

impl<'a, B> Ord for CowPhantom<'a, B>where
    B: ?Sized + Ord,

fn cmp(&self, other: &CowPhantom<'a, B>) -> 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<'a, B> PartialEq<CowPhantom<'a, B>> for CowPhantom<'a, B>where
    B: ?Sized + PartialEq,

fn eq(&self, other: &CowPhantom<'a, B>) -> 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<'a, B> PartialOrd<CowPhantom<'a, B>> for CowPhantom<'a, B>where
    B: ?Sized + PartialOrd,

fn partial_cmp(&self, other: &CowPhantom<'a, B>) -> 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<'a, 'o, B> ToOwning<'o> for CowPhantom<'a, B>where
    B: 'o + ?Sized,

type Owning = CowPhantom<'o, B>

The resulting type after obtaining ownership of self’s contents.

fn to_owning(&self) -> Self::Owning

Creates an object which owns its contents from one which borrows them.

impl<'a, B> Eq for CowPhantom<'a, B>where
    B: ?Sized + Eq,

impl<'a, B> StructuralEq for CowPhantom<'a, B>where
    B: ?Sized,

impl<'a, B> StructuralPartialEq for CowPhantom<'a, B>where
    B: ?Sized,