Synopsis

Declared in header </boost/url/grammar/lut_chars.hpp#L235[boost/url/grammar/lut_chars.hpp,window=blank_]>

template<
    class Pred,
    class = enable_if<detail::is_pred<Pred>::value && !std::is_base_of<lut_chars, Pred>::value>::type>
constexpr
lut_chars(const Pred& pred) noexcept;