Struct `PhantomContravariantLifetime`

struct PhantomContravariantLifetime<'a>(_)

Zero-sized type used to mark a lifetime as contravariant.

Contravariant lifetimes must live at most as long as declared. See the reference for more information.

Note: If 'a is otherwise covariant or invariant, the resulting type is invariant.

Layout

For all 'a, the following are guaranteed:

size_of::<PhantomContravariantLifetime<'a>>() == 0
align_of::<PhantomContravariantLifetime<'a>>() == 1

Implementations

`impl PhantomContravariantLifetime<'_>`

const fn new() -> Self: Constructs a new instance of the variance marker.

`impl Debug for PhantomContravariantLifetime<'_>`

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

`impl Variance for PhantomContravariantLifetime<'_>`

`impl<'a> Clone for PhantomContravariantLifetime<'a>`

fn clone(self: &Self) -> PhantomContravariantLifetime<'a>

`impl<'a> Copy for PhantomContravariantLifetime<'a>`

`impl<'a> Default for PhantomContravariantLifetime<'a>`

fn default() -> PhantomContravariantLifetime<'a>

`impl<'a> Eq for PhantomContravariantLifetime<'a>`

`impl<'a> Freeze for PhantomContravariantLifetime<'a>`

`impl<'a> Hash for PhantomContravariantLifetime<'a>`

fn hash<__H: $crate::hash::Hasher>(self: &Self, state: &mut __H)

`impl<'a> Ord for PhantomContravariantLifetime<'a>`

fn cmp(self: &Self, other: &PhantomContravariantLifetime<'a>) -> Ordering

`impl<'a> PartialEq for PhantomContravariantLifetime<'a>`

fn eq(self: &Self, other: &PhantomContravariantLifetime<'a>) -> bool

`impl<'a> PartialOrd for PhantomContravariantLifetime<'a>`

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

`impl<'a> RefUnwindSafe for PhantomContravariantLifetime<'a>`

`impl<'a> Send for PhantomContravariantLifetime<'a>`

`impl<'a> StructuralPartialEq for PhantomContravariantLifetime<'a>`

`impl<'a> Sync for PhantomContravariantLifetime<'a>`

`impl<'a> Unpin for PhantomContravariantLifetime<'a>`

`impl<'a> UnsafeUnpin for PhantomContravariantLifetime<'a>`

`impl<'a> UnwindSafe for PhantomContravariantLifetime<'a>`

`impl<T> Any for PhantomContravariantLifetime<'a>`

fn type_id(self: &Self) -> TypeId

`impl<T> Borrow for PhantomContravariantLifetime<'a>`

fn borrow(self: &Self) -> &T

`impl<T> BorrowMut for PhantomContravariantLifetime<'a>`

fn borrow_mut(self: &mut Self) -> &mut T

`impl<T> CloneToUninit for PhantomContravariantLifetime<'a>`

unsafe fn clone_to_uninit(self: &Self, dest: *mut u8)

`impl<T> From for PhantomContravariantLifetime<'a>`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T, U> Into for PhantomContravariantLifetime<'a>`

fn into(self: Self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for PhantomContravariantLifetime<'a>`

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

`impl<T, U> TryInto for PhantomContravariantLifetime<'a>`

fn try_into(self: Self) -> Result<U, <U as TryFrom<T>>::Error>