[#BloombergLP-bslfmt-Format_String_TestUpdater]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::Format&lowbar;String&lowbar;TestUpdater
:relfileprefix: ../../
:mrdocs:

This is a component&hyphen;private type which enables test drivers to work around the compile&hyphen;time restrictions in `basic&lowbar;format&lowbar;string` construction&period;

== Synopsis

Declared in `&lt;bslfmt&lowbar;format&lowbar;string&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;class t&lowbar;CHAR&gt;
struct Format&lowbar;String&lowbar;TestUpdater;
----

== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslfmt/Format_String_TestUpdater/update-0a.adoc[`update`] 
| Update the string contained in the specified `out` to the specified `value`&period;
|===



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