[#BloombergLP-bslfmt-basic_format_arg-0d]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::basic_format_arg
:relfileprefix: ../../
:mrdocs:

Type‐erased format argument holding a value for formatting.

== Synopsis

Declared in `<bslfmt_format_arg.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_CONTEXT>
class basic_format_arg;
----

== Specializations

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslfmt/basic_format_arg-05.adoc[`basic_format_arg<basic_format_context<t_OUT, t_CHAR>>`] 
| This class provides an STL‐compliant `basic_format_arg` which holds (by value for scalar and pointer types, by reference for user‐defined types). These types should not be constructed directly by the user.
|===



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