[#fmt-formatter-03-format-0d]
= xref:fmt.adoc[fmt]::xref:fmt/formatter-03.adoc[formatter&lt;T&gt;]::format
:relfileprefix: ../../
:mrdocs:

Format a strong value by formatting its underlying value&period;

== Synopsis

Declared in `&lt;folly&sol;lang&sol;Strong&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
auto
format(
    T const& st,
    auto& ctx) const;
----

== Return Value

The output iterator past the formatted output&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *st*
| The strong value to format&period;
| *ctx*
| The formatting context&period;
|===


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