[#bsl-is_reference-05]
= xref:bsl.adoc[bsl]::is_reference
:relfileprefix: ../
:mrdocs:

This `struct` template implements the `is_reference` meta‐function defined in the C++11 standard [meta.unary.comp]to determine if the (template parameter) `t_TYPE` is a (lvalue or rvalue) reference type.

== Synopsis

Declared in `<bslmf_isreference.h>`

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

== Description

This `struct` derives from `bsl::false_type` with specializations to follow for lvalue and rvalue references.

== Base Classes

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

== Specializations

[cols="1,4"]
|===
| Name| Description
| xref:bsl/is_reference-0c.adoc[`is_reference<t_TYPE&>`] 
| This `struct` template implements the `is_reference` meta‐function defined in the C++11 standard [meta.unary.comp]to determine if the (template parameter) `t_TYPE` is a (lvalue or rvalue) reference type.
| xref:bsl/is_reference-02.adoc[`is_reference<t_TYPE&&>`] 
| This `struct` template implements the `is_reference` meta‐function defined in the C++11 standard [meta.unary.comp]to determine if the (template parameter) `t_TYPE` is a (lvalue or rvalue) reference type.
|===



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