template<typename A>
typename A::symb_type;
{ a.length() } -> std::convertible_to<size_t>;
{ a.place(std::declval<typename A::symb_type*>()) } -> std::same_as<typename A::symb_type*>;
}
Concept of "String Expressions".
Definition strexpr.h:321
Concept of "String Expressions".
This is a concept that checks whether a type is a "string expression".