[#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 object wrapper that refers to the target object of the specified `original` wrapper. Note that the created wrapper does not own a copy of the underlying nullable value, but instead refers to it, and so the lifetime of the target must exceed the lifetime of the created wrapper.


[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 object wrapper that refers to the specified `opt` object. Note that the created wrapper does not own a copy of the underlying nullable value, but instead refers to it, and so the lifetime of `opt` must exceed the lifetime of the created wrapper.


[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 object wrapper that refers to the target object of the specified `ref` wrapper. Note that the created wrapper does not own a copy of the underlying nullable value, but instead refers to to it, and so the lifetime of the target must exceed the lifetime of the created wrapper.


[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 object wrapper that refers to the specified `opt` object. Note that the created wrapper does not own a copy of the underlying nullable value, but instead refers to it, and so the lifetime of `opt` must exceed the lifetime of the created wrapper.


[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..._]#


[.small]#Created with https://www.mrdocs.com[MrDocs]#