:relfileprefix: ../../../
[#D5E705CC1202FD256D389B27967A11C3F2F63B19]

= Function variant_rule



== Synopsis

Declared in header `</boost/url/grammar/variant_rule.hpp#L117[boost/url/grammar/variant_rule.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
template<
    class R0,
    class... Rn>
constexpr
xref:boost/urls/grammar/variant_rule_t.adoc[variant_rule_t]<R0, Rn...>
variant_rule(
    const R0& r0,
    const Rn&... rn) noexcept;
----