Enum Pattern 

pub enum Pattern {
    Wildcard,
    Var(Name),
    Constructor(Name, Vec<Pattern>),
    Literal(Literal),
    As(Name, Box<Pattern>),
    Or(Vec<Pattern>),
    Inaccessible(Expr),
}

A pattern in a match expression.

Variants

Wildcard

Wildcard: matches anything

Var(Name)

Variable binding: matches anything, binds the value

Constructor(Name, Vec<Pattern>)

Constructor application: C p1 p2 ...

Literal(Literal)

Literal: matches a specific literal

As(Name, Box<Pattern>)

As-pattern: x @ p (bind and match)

Or(Vec<Pattern>)

Or-pattern: p1 | p2

Inaccessible(Expr)

Inaccessible pattern: .( expr )

Trait Implementations

impl Clone for Pattern

fn clone(&self) -> Pattern

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Pattern

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

Formats the value using the given formatter.

impl PartialEq for Pattern

fn eq(&self, other: &Pattern) -> 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 StructuralPartialEq for Pattern