op ?.
?.
Defined in
- 5.2 Precedence and associativity — Precedence and associativity
- 5.3 Overloading and user-defined operators — Overloading built-in operators — op declarations in impl
- 1.6 Operators and delimiters — + - * / % ** +% -% % +| -| | & | ^ ~ << >> && || !
- 1.2 Statement termination — A statement is terminated by ; or by a line break.
- 3.5 Unions and optionals — A | B — an anonymous union.
- 5.1 General rules — Almost everything is an expression
Related diagnostics
chained-comparison, not-callable, not-overloadable, operator-decl, range-not-iterable, invalid-char, type-mismatch, not-assignable