[#bsl-function-05]
= xref:bsl.adoc[bsl]::xref:bsl/function-0a.adoc[function&lt;RET(ARGS&period;&period;&period;)&gt;]
:relfileprefix: ../
:mrdocs:

Deduce the template parameter `PROTOTYPE` from the signature of the function supplied to the constructor of `function`&period;

== Synopsis

Declared in `&lt;bslstl&lowbar;function&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;
    class ALLOC,
    class RET,
    class&period;&period;&period; ARGS&gt;
xref:bsl/function-0a.adoc[function&lt;RET(ARGS&period;&period;&period;)&gt;](
    std::allocator&lowbar;arg&lowbar;t,
    ALLOC,
    RET(*)(ARGS&period;&period;&period;)) -> xref:bsl/function-0a.adoc[function&lt;RET(ARGS&period;&period;&period;)&gt;];
----


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