[#BloombergLP-bdlb-ConstNullableValueRef-2constructor-05]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/ConstNullableValueRef.adoc[ConstNullableValueRef]::ConstNullableValueRef
:relfileprefix: ../../../
:mrdocs:

Constructors

== Synopses

Declared in `<bdlb_nullablevalueref.h>`

Create a nullable wrapper that refers to the same target as `original`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlb/ConstNullableValueRef/2constructor-0e.adoc[ConstNullableValueRef](xref:BloombergLP/bdlb/ConstNullableValueRef.adoc[ConstNullableValueRef] const& original);
----

[.small]#xref:BloombergLP/bdlb/ConstNullableValueRef/2constructor-0e.adoc[_» more..._]#

Create a nullable wrapper that refers to `opt`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlb/ConstNullableValueRef/2constructor-00.adoc[ConstNullableValueRef](xref:BloombergLP/bdlb/NullableAllocatedValue.adoc[NullableAllocatedValue<TYPE>] const& opt);
----

[.small]#xref:BloombergLP/bdlb/ConstNullableValueRef/2constructor-00.adoc[_» more..._]#

Create a nullable wrapper that refers to the same target as `ref`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlb/ConstNullableValueRef/2constructor-03.adoc[ConstNullableValueRef](xref:BloombergLP/bdlb/NullableValueRef.adoc[NullableValueRef<TYPE>] const& ref);
----

[.small]#xref:BloombergLP/bdlb/ConstNullableValueRef/2constructor-03.adoc[_» more..._]#

Create a nullable wrapper that refers to `opt`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlb/ConstNullableValueRef/2constructor-0a.adoc[ConstNullableValueRef](xref:bsl/optional-072.adoc[bsl::optional<TYPE>] const& opt);
----

[.small]#xref:BloombergLP/bdlb/ConstNullableValueRef/2constructor-0a.adoc[_» more..._]#

== Parameters

[cols="1,4"]
|===
| Name| Description
| *original*
| wrapper whose target is shared
| *opt*
| nullable object to wrap
| *ref*
| wrapper whose target is shared
|===


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