:relfileprefix: ../../
[#boost-urls-relative_ref_rule]

== xref:boost.adoc[pass:[boost]]::xref:boost/urls.adoc[pass:[urls]]::relative_ref_rule


Rule for relative-ref


=== Synopsis

Declared in header `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/rfc/relative_ref_rule.hpp#L92[boost/url/rfc/relative_ref_rule.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
constexpr
pass:q[_implementation-defined_] relative_ref_rule = {};
----

=== Description

[,cpp]
----
using value_type = url_view;
----

=== Rules are used with the function

xref:boost/urls/grammar/parse-02.adoc[grammar::parse]
.
[,cpp]
----
system::result< url_view > rv = grammar::parse( "images/dot.gif?v=hide#a", relative_ref_rule );
----
[,cpp]
----
relative-ref  = relative-part [ "?" query ] [ "#" fragment ]
----

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-4.2[4.2. Relative Reference (rfc3986)]



=== See Also


xref:boost/urls/grammar/parse-02.adoc[grammar::parse]
,
xref:boost/urls/parse_relative_ref.adoc[parse_relative_ref]
,
xref:boost/urls/url_view.adoc[url_view]
.