[#BloombergLP-bslmf-Switch4]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmf.adoc[bslmf]::Switch4
:relfileprefix: ../../
:mrdocs:

`switch` meta&hyphen;function among four types&period;

== Synopsis

Declared in `&lt;bslmf&lowbar;switch&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;
    size&lowbar;t t&lowbar;SWITCH&lowbar;SELECTOR,
    class t&lowbar;T0,
    class t&lowbar;T1,
    class t&lowbar;T2,
    class t&lowbar;T3&gt;
using Switch4 = xref:BloombergLP/bslmf/Switch-07a1.adoc[Switch&lt;t&lowbar;SWITCH&lowbar;SELECTOR, t&lowbar;T0, t&lowbar;T1, t&lowbar;T2, t&lowbar;T3&gt;];
----


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