[#BloombergLP-bslfmt-FormatterBase_IsStdChronoDuration-07]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::FormatterBase_IsStdChronoDuration
:relfileprefix: ../../
:mrdocs:

Simple trait type that tells is `t_TYPE` is an instance of `std::chrono::duration`.

== Synopsis

Declared in `<bslfmt_formatterbase.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_TYPE>
struct FormatterBase_IsStdChronoDuration;
----

== Static Data Members

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslfmt/FormatterBase_IsStdChronoDuration-07/value.adoc[`value`] 
| `true` if `t_TYPE` is a `std::chrono::duration`, and `false` otherwise.
|===


== Specializations

[cols="1"]
|===
| Name
| xref:BloombergLP/bslfmt/FormatterBase_IsStdChronoDuration-0f.adoc[`FormatterBase_IsStdChronoDuration<std::chrono::duration<t_REP, t_PERIOD>>`] 
|===



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