[#bsl-select2nd-argument_type]
= xref:bsl.adoc[bsl]::xref:bsl/select2nd.adoc[select2nd]::argument&lowbar;type
:relfileprefix: ../../
:mrdocs:

This `typedef` is an alias to the (template parameter) `PAIR`&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
typedef PAIR argument&lowbar;type;
----


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