:relfileprefix: ../../../
[#CBC0B857F27378CC87813EA35D0C9E0D20E28CE5]

= Function url_view::url_view

pass:v,q[Constructor]


== Synopsis

Declared in header `</boost/url/url_view.hpp#L146[boost/url/url_view.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
url_view() noexcept = default;
----

== Description

pass:v,q[Default constructed views refer to] pass:v,q[a string with zero length, which]
pass:v,q[always remains valid. This matches]
pass:v,q[the grammar for a relative-ref with]
pass:v,q[an empty path and no query or]
pass:v,q[fragment.]

=== Example
[,cpp]
----
url_view u;
----

=== Postconditions
[,cpp]
----
this->empty() == true
----

=== Complexity
pass:v,q[Constant.]

=== Exception Safety
pass:v,q[Throws nothing.]

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

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



== Return Value

* `void`