Enum CardClass 

pub enum CardClass {
    Single,
    Subset,
    Expand,
    Constant,
    Reduce(u32),
}

Cardinality contract published per op so the optimiser can reason about how output cardinality relates to input.

Variants

Single

Output is exactly one token.

Subset

Output is a strict subset of input (restrictors).

Expand

Output may be larger than input (expanders).

Constant

Output is independent of input (loaders).

Reduce(u32)

Output collapsed to N tokens (reducers).

Trait Implementations

impl Clone for CardClass

fn clone(&self) -> CardClass

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CardClass

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

Formats the value using the given formatter.

impl PartialEq for CardClass

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

impl Eq for CardClass

impl StructuralPartialEq for CardClass