Enum Match 

pub enum Match {
    Is,
    Not,
    Ambiguous,
}

Whether a column occurrence is the differentiation variable, and if its identity relative to wrt could be established syntactically at all.

Variants

Is

This occurrence is the wrt column — its tangent is the seed.

Not

This occurrence is definitely a different column — tangent zero.

Ambiguous

The occurrence’s base name matches wrt but its qualification can’t be pinned syntactically — a bare occurrence when wrt is qualified, or a qualified occurrence when wrt is bare. Hard error (F2).

Trait Implementations

impl Clone for Match

fn clone(&self) -> Match

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Match

impl Debug for Match

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

Formats the value using the given formatter.

impl Eq for Match

impl PartialEq for Match

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Match