:relfileprefix: ../../../
[#boost-urls-segments_base-back]

== xref:boost.adoc[pass:[boost]]::xref:boost/urls.adoc[pass:[urls]]::xref:boost/urls/segments_base.adoc[pass:[segments_base]]::back


Return the last segment


=== Synopsis

Declared in header `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/segments_base.hpp#L292[boost/url/segments_base.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
std::string
back() const noexcept;
----

=== Description

[,cpp]
----
this->empty() == false
----
[,cpp]
----
assert( url_view( "/path/to/file.txt" ).segments().back() == "file.txt" );
----
[,cpp]
----
this->empty() == false
----
[,cpp]
----
return *--end();
----

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

=== Calls to allocate may throw.