[#bsl-is_function-06]
= xref:bsl.adoc[bsl]::xref:bsl/is_function-05.adoc[is_function]<t_TYPE&>
:relfileprefix: ../
:mrdocs:

Reference types are, self‐evidently, never function types. The idiom for detecting function types in this component is that a function is a type that is the same as the const‐qualified version of that same type. As references also have this property, we must filter out references with this partial specialization.

== Synopsis

Declared in `<bslmf_isfunction.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_TYPE>
struct xref:bsl/is_function-05.adoc[is_function]<t_TYPE&>
    : xref:bsl/false_type.adoc[false_type]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:bsl/false_type.adoc[false_type]`
| Metafunction representing the boolean constant `false`.
|===


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