[#absl-Span-back]
= xref:absl.adoc[absl]::xref:absl/Span.adoc[Span]::back
:relfileprefix: ../../
:mrdocs:

Returns a reference to the last element&semi; the span must not be empty&period;

== Synopsis

Declared in `&lt;absl&sol;types&sol;span&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:absl/Span/reference.adoc[reference]
back() const noexcept;
----

== Return Value

A reference to the last element&period;


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