:relfileprefix: ../../../
[#boost-urls-url_view_base-fragment]

= xref:boost.adoc[pass:[boost]]::xref:boost/urls.adoc[pass:[urls]]::xref:boost/urls/url_view_base.adoc[pass:[url_view_base]]::fragment


Return the fragment


== Synopsis

Declared in header `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/url_view_base.hpp#L2149[boost/url/url_view_base.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
template<class StringToken = xref:boost/urls/string_token.adoc[string_token]::xref:boost/urls/string_token/return_string.adoc[return_string]>
StringToken::result_type
fragment(StringToken&& token) const;
----

== Description


This function calculates the fragment
of the url, with percent escapes decoded
and without the leading pound sign ('#')
whose presence indicates that the url
contains a fragment.




This function accepts an optional
_StringToken_
parameter which
controls the return type and behavior
of the function:

* When called with no arguments,
the return type of the function is
`std::string`. Otherwise

* When called with a string token,
the behavior and return type of the
function depends on the type of string
token being passed.

=== Example
[,cpp]
----
assert( url_view( "http://www.example.com/index.htm#a%2D1" ).fragment() == "a-1" );
----

=== Complexity

Linear in `this-&gt;fragment().size()`.

=== Exception Safety

Calls to allocate may throw.
String tokens may throw exceptions.

=== BNF
[,cpp]
----
fragment        = *( pchar / "/" / "?" )

fragment-part   = [ "#" fragment ]
----

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.5[3.5. Fragment (rfc3986)]





== Parameters

|===
| Name | Description 

| *token*
| 
An optional string token to
use. If this parameter is omitted, the
function returns a new `std::string`.

|===




== See Also


xref:boost/urls/url_view_base/encoded_fragment.adoc[encoded_fragment]
,
xref:boost/urls/url_view_base/has_fragment.adoc[has_fragment]
.