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

Return the last segment

== Synopsis

Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/segments_base.hpp#L282[boost/url/segments_base.hpp]>`

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

== Description

== Preconditions
[,cpp]
----
this->empty() == false
----
== Example
[,cpp]
----
assert( url_view( "/path/to/file.txt" ).segments().back() == "file.txt" );
----
== Preconditions
[,cpp]
----
this->empty() == false
----
== Effects
[,cpp]
----
return *--end();
----
== Complexity
Linear in `this‐>back().size()`.

== Exception Safety
Calls to allocate may throw.

== Return Value

The last segment.


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