Expand description
Coalescing (??) expression.
Represents a ?? b, which evaluates a and returns it unless it is
Value::Errata(_) or Value::Empty, in which case b is evaluated and used.
Left-associative for chained fallback.
Enums§
- Coalesce
- A
??coalescing expression in the AST.
Functions§
- parse_
coalesce - Parse a coalescing expression.