Enum ChangeOrKeep 

pub enum ChangeOrKeep<T>
where
    T: ToOwning,
{
    Change(T),
    Keep(T::Owning),
}

An Idempotent implementation whose owning-ness is determined at runtime.

Variants

Change(T)

A T that has not yet been transformed.

Keep(T::Owning)

A T::Owning which has already been transformed from a T.

Trait Implementations

impl<T> Idempotent<T> for ChangeOrKeep<T>

where T: IntoOwning, T::Owning: ToOwning<Owning = T::Owning>,

fn to_ref(&self) -> IdemRef<'_, T>

Get a reference to either a T or a T::Owning.

fn to_mut(&mut self) -> IdemMut<'_, T>

Get a mutable reference to either a T or a T::Owning.

fn into_kept(self) -> T::Owning

Converts self into a T::Owning; equivalent to into_owning().0.

impl<T> IntoOwning for ChangeOrKeep<T>

where T: IntoOwning, T::Owning: ToOwning<Owning = T::Owning>,

fn into_owning(self) -> Self::Owning

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

impl<T> ToOwning for ChangeOrKeep<T>

where T: ToOwning, T::Owning: ToOwning<Owning = T::Owning>,

type Owning = Keep<T>

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.