[#fmt-enable_if_t]
= xref:fmt.adoc[fmt]::enable&lowbar;if&lowbar;t
:relfileprefix: ../
:mrdocs:

== Synopsis

Declared in `&lt;fmt&sol;base&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;
    bool B,
    typename T = void&gt;
using enable&lowbar;if&lowbar;t = T;
----


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