Synopsis

Declared in header </boost/url/grammar/variant_rule.hpp#L91[boost/url/grammar/variant_rule.hpp,window=blank_]>

template<
    class R0_,
    class... Rn_>
friend
constexpr
variant_rule_t<R0_, Rn_...>
variant_rule(
    const R0_& r0,
    const Rn_&... rn) noexcept;