Enum Modality 

pub enum Modality {
    Impossible,
    Possible,
    Definite,
}

How firmly a relation holds across the completions of two expressions.

Variants

Impossible

Holds for no pair of completions.

Possible

Holds for some pair of completions, but not all.

Definite

Holds for every pair of completions.

Implementations

impl Modality

pub const fn as_str(self) -> &'static str

Lower-case name: "impossible", "possible" or "definite".

Trait Implementations

impl Clone for Modality

fn clone(&self) -> Modality

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Modality

impl Debug for Modality

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

Formats the value using the given formatter.

impl Eq for Modality

impl PartialEq for Modality

fn eq(&self, other: &Modality) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Modality