23 Containers library [containers]

23.3 Sequence containers [sequences]

23.3.12 Specialization of vector for bool [vector.bool]

23.3.12.2 Formatter specialization for vector<bool> [vector.bool.fmt]

namespace std { template<class T, class charT> requires is-vector-bool-reference<T> struct formatter<T, charT> { private: formatter<bool, charT> underlying_; // exposition only public: template<class ParseContext> constexpr typename ParseContext::iterator parse(ParseContext& ctx); template<class FormatContext> typename FormatContext::iterator format(const T& ref, FormatContext& ctx) const; }; }

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template<class ParseContext>
  constexpr typename ParseContext::iterator
    parse(ParseContext& ctx);

Equivalent to: return underlying_.parse(ctx);

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template<class FormatContext>
  typename FormatContext::iterator
    format(const T& ref, FormatContext& ctx) const;

Equivalent to: return underlying_.format(ref, ctx);