[#BloombergLP-bslfmt-formatted_size-09]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::formatted_size
:relfileprefix: ../../
:mrdocs:

Return the length of the string that formatting `args` per `fmtStr` yields.

== Synopsis

Declared in `<bslfmt_format_imp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class... t_ARGS>
std::size_t
formatted_size(
    xref:BloombergLP/bslfmt/format_string.adoc[bslfmt::format_string<t_ARGS...>] fmtStr,
    t_ARGS const&... args);
----

== Description

Calculate the length of the resulting string if the specified `args` were to be formatted according to the specification given by the specified `fmtStr`, and return the result.

== Return Value

the number of characters in the formatted result

== Parameters

[cols="1,4"]
|===
| Name| Description
| *fmtStr*
| format string
| *args*
| values to format
|===


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