Struct Absence 

pub struct Absence {
    pub reason: AbsentReason,
    pub predicate: Option<PresentWhen>,
}

Why a value is absent.

Fields

reason: AbsentReason

predicate: Option<PresentWhen>

The canonical predicate, for predicate_failed.

Trait Implementations

impl Clone for Absence

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Absence

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

Formats the value using the given formatter.

impl Eq for Absence

impl PartialEq for Absence

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Absence