28 Text processing library [text]
namespace std {
template<class Context>
class basic_format_args {
size_t size_;
const basic_format_arg<Context>* data_;
public:
template<class. Args>
constexpr basic_format_args(const format-arg-store<Context, Args..>& store) noexcept;
constexpr basic_format_arg<Context> get(size_t i) const noexcept;
};
template<class Context, class. Args>
basic_format_args(format-arg-store<Context, Args..>) -> basic_format_args<Context>;
}
An instance of
basic_format_args provides access to formatting
arguments
.Recommended practice: Implementations should
optimize the representation of
basic_format_args
for a small number of formatting arguments
. [
Note 1:
For example, by storing indices of type alternatives separately from values
and packing the former
. —
end note]
Effects: Initializes
size_ with
sizeof.(Args) and
data_ with
store.args.data().