[#BloombergLP-bdlar-IsConstRef-0f6]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlar.adoc[bdlar]::IsConstRef
:relfileprefix: ../../
:mrdocs:

Metafunction that yields `true` for `bdlar` const&hyphen;reference types&period;

== Synopsis

Declared in `&lt;bdlar&lowbar;isref&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;class t&lowbar;TYPE&gt;
struct IsConstRef
    : xref:bsl/false_type.adoc[bsl::false&lowbar;type]
----

== Base Classes

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

== Specializations

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdlar/IsConstRef-04.adoc[`IsConstRef&lt;ArrayConstRef&gt;`] 
| Trait indicating that `ArrayConstRef` is a `bdlar` const&hyphen;reference type&period;
| xref:BloombergLP/bdlar/IsConstRef-0d.adoc[`IsConstRef&lt;ChoiceConstRef&gt;`] 
| Trait indicating that `ChoiceConstRef` is a `bdlar` const&hyphen;reference type&period;
| xref:BloombergLP/bdlar/IsConstRef-09.adoc[`IsConstRef&lt;CustomizedTypeConstRef&gt;`] 
| Trait indicating that `CustomizedTypeConstRef` is a `bdlar` const&hyphen;reference type&period;
| xref:BloombergLP/bdlar/IsConstRef-0b4.adoc[`IsConstRef&lt;DynamicTypeConstRef&gt;`] 
| Trait indicating that `DynamicTypeConstRef` is a `bdlar` const&hyphen;reference type&period;
| xref:BloombergLP/bdlar/IsConstRef-05.adoc[`IsConstRef&lt;EnumConstRef&gt;`] 
| Trait indicating that `EnumConstRef` is a `bdlar` const&hyphen;reference type&period;
| xref:BloombergLP/bdlar/IsConstRef-0bf.adoc[`IsConstRef&lt;NullableValueConstRef&gt;`] 
| Trait indicating that `NullableValueConstRef` is a `bdlar` const&hyphen;reference type&period;
| xref:BloombergLP/bdlar/IsConstRef-0f7.adoc[`IsConstRef&lt;SequenceConstRef&gt;`] 
| Trait indicating that `SequenceConstRef` is a `bdlar` const&hyphen;reference type&period;
| xref:BloombergLP/bdlar/IsConstRef-0bc.adoc[`IsConstRef&lt;SimpleTypeConstRef&gt;`] 
| Trait indicating that `SimpleTypeConstRef` is a `bdlar` const&hyphen;reference type&period;
|===



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