Enum ValidationError 

pub enum ValidationError {
    ExponentialsRequireProducts,
    LinearHomRequiresTensor,
    CartesianRequiresTerminal,
    CartesianRequiresProducts,
    InvalidStructuralRules(String),
    EmptyName,
    DuplicateBaseType(String),
}

Errors that can occur when building or validating a categorical specification.

Variants

ExponentialsRequireProducts

Exponentials require products to be present.

LinearHomRequiresTensor

Linear hom requires tensor to be present.

CartesianRequiresTerminal

Cartesian structure requires terminal object.

CartesianRequiresProducts

Cartesian structure requires products.

InvalidStructuralRules(String)

Invalid combination of structural rules.

EmptyName

Empty category name.

DuplicateBaseType(String)

Duplicate base type.

Trait Implementations

impl Clone for ValidationError

fn clone(&self) -> ValidationError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValidationError

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

Formats the value using the given formatter.

impl Display for ValidationError

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

Formats the value using the given formatter.

impl Error for ValidationError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

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

Provides type-based access to context intended for error reports.

impl PartialEq for ValidationError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ValidationError

impl StructuralPartialEq for ValidationError