Enum chalk_parse::ast::Variance

pub enum Variance {
    Invariant,
    Covariant,
    Contravariant,
}

Variants

Invariant

Covariant

Contravariant

Trait Implementations

impl Clone for Variance

fn clone(&self) -> Variance

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Variance

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

Formats the value using the given formatter.

impl PartialEq for Variance

fn eq(&self, other: &Variance) -> 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 Copy for Variance

impl Eq for Variance

impl StructuralPartialEq for Variance