Enum Occurrence 

pub enum Occurrence {
    Root,
    At(Box<Occurrence>, Step),
}

A path to one value reached from a case’s scrutinee: the scrutinee itself, or one step inside another occurrence. A pattern nested n deep is reached by a path of n Steps.

Variants

Root

The scrutinee itself.

At(Box<Occurrence>, Step)

The value one step inside another occurrence.

Implementations

impl Occurrence

pub fn field(&self, step: Step) -> Occurrence

The occurrence one step further in: self is a constructor, a tuple or a record, and step says which of its positions.

Trait Implementations

impl Clone for Occurrence

fn clone(&self) -> Occurrence

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Occurrence

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

Formats the value using the given formatter.

impl Eq for Occurrence

impl PartialEq for Occurrence

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Occurrence