Struct Optional 

pub struct Optional {
    pub span: Span,
    pub expr: Box<Expression>,
}

Fields

span: Span

expr: Box<Expression>

Implementations

impl Optional

pub fn new_expr(span: Span, expr: Box<Expression>) -> Expression

Trait Implementations

impl Clone for Optional

fn clone(&self) -> Optional

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Optional

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

Formats the value using the given formatter.

impl PartialEq for Optional

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Optional