Enum Fault 

pub enum Fault {
    Invalid(String),
    Missing(String),
    Conflict(String),
    Absent(String),
}

Why evaluation produced no value; becomes the step’s unresolved reason.

Variants

Invalid(String)

Overflow, division by zero, an out-of-range timestamp.

Missing(String)

A missing fact, e.g. fx.rates.EUR.

Conflict(String)

Two different values for one fact.

Absent(String)

A read of an absent value or a null field, naming its path (spec 032, 3.4.4); only plan 3 values can be absent.

Trait Implementations

impl Clone for Fault

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 Fault

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

Formats the value using the given formatter.

impl Eq for Fault

impl From<ArithError> for Fault

fn from(e: ArithError) -> Self

Converts to this type from the input type.

impl PartialEq for Fault

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Fault