[#boost-urls-url_view_base-fragment]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/url_view_base.adoc[url&lowbar;view&lowbar;base]::fragment
:relfileprefix: ../../../
:mrdocs:


Return the fragment

== Synopsis


Declared in `&lt;https://www.github.com/boostorg/url/blob/develop/include/boost/url/url_view_base.hpp#L2111[boost&sol;url&sol;url&lowbar;view&lowbar;base&period;hpp]&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;xref:boost/urls/string_token.adoc[string&lowbar;token]::xref:boost/urls/string_token/StringToken.adoc[StringToken] StringToken = xref:boost/urls/string_token.adoc[string&lowbar;token]::xref:boost/urls/string_token/return_string.adoc[return&lowbar;string]&gt;
StringToken::result&lowbar;type
fragment(StringToken&& token = &lcub;&rcub;);
----

== Description


This function calculates the fragment        of the url, with percent escapes decoded        and without the leading pound sign (&apos;&num;&apos;)        whose presence indicates that the url        contains a fragment&period;

This function accepts an optional        _StringToken_ parameter which        controls the return type and behavior        of the function&colon;

* When called with no arguments,        the return type of the function is
        
`std&colon;&colon;string`
&period; Otherwise
* When called with a string token,        the behavior and return type of the
        function depends on the type of string        token being passed&period;


=== Example

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

=== Complexity

Linear in `this&hyphen;&gt;fragment()&period;size()`&period;


=== Exception Safety

Calls to allocate may throw&period;        String tokens may throw exceptions&period;


=== BNF

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

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

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.5[3&period;5&period; Fragment (rfc3986)]

Return the fragment

This function calculates the fragment        of the url, with percent escapes decoded        and without the leading pound sign (&apos;&num;&apos;)        whose presence indicates that the url        contains a fragment&period;

This function accepts an optional        _StringToken_ parameter which        controls the return type and behavior        of the function&colon;

* When called with no arguments,        the return type of the function is
        
`std&colon;&colon;string`
&period; Otherwise
* When called with a string token,        the behavior and return type of the
        function depends on the type of string        token being passed&period;


=== Example

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

=== Complexity

Linear in `this&hyphen;&gt;fragment()&period;size()`&period;


=== Exception Safety

Calls to allocate may throw&period;        String tokens may throw exceptions&period;


=== BNF

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

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

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.5[3&period;5&period; Fragment (rfc3986)]



== Parameters


|===
| Name | Description

| *token*
| An optional string token to        use&period; If this parameter is omitted, the        function returns a new `std&colon;&colon;string`&period;


| *token*
| An optional string token to        use&period; If this parameter is omitted, the        function returns a new `std&colon;&colon;string`&period;


|===

== See Also


xref:boost/urls/url_view_base/encoded_fragment.adoc[encoded&lowbar;fragment],            xref:boost/urls/url_view_base/has_fragment.adoc[has&lowbar;fragment]&period;



xref:boost/urls/url_view_base/encoded_fragment.adoc[encoded&lowbar;fragment],            xref:boost/urls/url_view_base/has_fragment.adoc[has&lowbar;fragment]&period;






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