[#mp_units-utility-handle_dynamic_spec]
= xref:mp_units.adoc[mp&lowbar;units]::xref:mp_units/utility.adoc[utility]::handle&lowbar;dynamic&lowbar;spec
:relfileprefix: ../../
:mrdocs:

== Synopsis

Declared in `&lt;mp&hyphen;units&sol;utility&sol;format&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;
    class Handler,
    typename Context&gt;
constexpr
void
handle&lowbar;dynamic&lowbar;spec(
    int& value,
    xref:mp_units/utility/fmt_arg_ref.adoc[fmt&lowbar;arg&lowbar;ref&lt;Context::char&lowbar;type&gt;] ref,
    Context& ctx);
----


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