[format.formatter.locking] (original) (raw)
28 Text processing library [text]
28.5 Formatting [format]
28.5.6 Formatter [format.formatter]
28.5.6.2 Formatter locking [format.formatter.locking]
template<class T> constexpr bool enable_nonlocking_formatter_optimization = false;
Remarks: Pursuant to [namespace.std], users may specialize enable_nonlocking_formatter_optimization for cv-unqualified program-defined types.
Such specializations shall be usable in constant expressions ([expr.const]) and have type const bool.