[#bsl-select2nd-operator_call]
= xref:bsl.adoc[bsl]::xref:bsl/select2nd.adoc[select2nd]::operator()
:relfileprefix: ../../
:mrdocs:

Return a reference to the `second` member of the specified `x`&period;

== Synopsis

Declared in `&lt;bslstp&lowbar;exfunctional&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
PAIR::second&lowbar;type const&
operator()(PAIR const& x) const;
----

== Return Value

const reference to `x&period;second`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *x*
| pair from which to select the second member
|===


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