Struct NullCoalesceExpr 

pub struct NullCoalesceExpr {
    pub left: Box<Expr>,
    pub right: Box<Expr>,
}

A ?? expression.

Fields

left: Box<Expr>

Value tested for null.

right: Box<Expr>

Fallback value.

Trait Implementations

impl Clone for NullCoalesceExpr

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NullCoalesceExpr

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

Formats the value using the given formatter.

impl Serialize for NullCoalesceExpr

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.