:relfileprefix: ../../../../
[#FBE49FC517102F8AC3CF4BEBC10B130987DDDDDE]

= Friend variant_rule



== Synopsis

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

[source,cpp,subs="verbatim,macros,-callouts"]
----
template<
    class R0_,
    class... Rn_>
friend
constexpr
xref:boost/urls/grammar/variant_rule_t.adoc[variant_rule_t]<R0_, Rn_...>
variant_rule(
    const R0_& r0,
    const Rn_&... rn) noexcept;
----