[#boost-urls-relative_ref_rule]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::relative_ref_rule
:relfileprefix: ../../
:mrdocs:


Rule for relative‐ref

== Synopsis


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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr /* implementation-defined */::xref:boost/urls/implementation_defined/relative_ref_rule_t.adoc[relative_ref_rule_t] relative_ref_rule = {};
----

== Description



=== Value Type

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

=== Example

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 );
----

=== BNF

[,cpp]
----
relative-ref  = relative-part [ "?" query ] [ "#" fragment ]
----

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-4.2[4&period;2&period; Relative Reference (rfc3986)]



== See Also


xref:boost/urls/grammar/parse-02.adoc[grammar&colon;&colon;parse],        xref:boost/urls/parse_relative_ref.adoc[parse&lowbar;relative&lowbar;ref],        xref:boost/urls/url_view.adoc[url&lowbar;view]&period;






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