Struct variance::InvariantLifetime

pub struct InvariantLifetime<'id>(_);

A marker for forcing 'id to be considered invariant.

Methods

impl<'id> InvariantLifetime<'id>

pub fn new() -> Self

Create a new InvariantLifetime marker instance.

All instances of InvariantLifetime with the same lifetime are equivalent.

Trait Implementations

impl<'id> PartialEq<InvariantLifetime<'id>> for InvariantLifetime<'id>

fn eq(&self, other: &InvariantLifetime<'id>) -> bool

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

fn ne(&self, other: &InvariantLifetime<'id>) -> bool

This method tests for !=.

impl<'id> Clone for InvariantLifetime<'id>

fn clone(&self) -> InvariantLifetime<'id>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'id> Ord for InvariantLifetime<'id>

fn cmp(&self, other: &InvariantLifetime<'id>) -> Ordering

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl<'id> Eq for InvariantLifetime<'id>

impl<'id> PartialOrd<InvariantLifetime<'id>> for InvariantLifetime<'id>

fn partial_cmp(&self, other: &InvariantLifetime<'id>) -> Option<Ordering>

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

fn lt(&self, other: &InvariantLifetime<'id>) -> bool

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

fn le(&self, other: &InvariantLifetime<'id>) -> bool

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

fn gt(&self, other: &InvariantLifetime<'id>) -> bool

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

fn ge(&self, other: &InvariantLifetime<'id>) -> bool

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

impl<'id> Copy for InvariantLifetime<'id>

impl<'id> Default for InvariantLifetime<'id>

fn default() -> InvariantLifetime<'id>

Returns the "default value" for a type.

impl<'id> Debug for InvariantLifetime<'id>

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

Formats the value using the given formatter.

impl<'id> Hash for InvariantLifetime<'id>

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, 

Feeds a slice of this type into the given [Hasher].