[#BloombergLP-bdlb-Variant-2constructor-035]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/Variant.adoc[Variant]::Variant
:relfileprefix: ../../../
:mrdocs:

Constructors

== Synopses

Declared in `<bdlb_variant.h>`

Create a variant object in the unset state that uses the currently installed default allocator to supply memory.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlb/Variant/2constructor-0a.adoc[Variant]();
----

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

Create a variant by moving from `original`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlb/Variant/2constructor-038.adoc[Variant](xref:BloombergLP/bslmf/MovableRef.adoc[bslmf::MovableRef<Variant>] original);
----

[.small]#xref:BloombergLP/bdlb/Variant/2constructor-038.adoc[_» more..._]#

Create a variant from `valueOrAllocator`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class TYPE_OR_ALLOCATOR>
explicit
xref:BloombergLP/bdlb/Variant/2constructor-0d.adoc[Variant](TYPE_OR_ALLOCATOR const& valueOrAllocator);
----

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

Create a variant by moving from the specified `value`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class TYPE>
explicit
xref:BloombergLP/bdlb/Variant/2constructor-04.adoc[Variant](TYPE&& value)
requires !bsl::is_same<
                      SelfType,
                      typename bsl::remove_const<
                      typename bsl::remove_reference<TYPE>::type>::type>::value
                &&
                !bsl::is_convertible<TYPE, bslma::Allocator *>::value;
----

[.small]#xref:BloombergLP/bdlb/Variant/2constructor-04.adoc[_» more..._]#

Create a variant holding `value` using `basicAllocator`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class TYPE>
xref:BloombergLP/bdlb/Variant/2constructor-09.adoc[Variant](TYPE&& value)
requires !bsl::is_same<
                     SelfType,
                     typename bsl::remove_const<
                     typename bsl::remove_reference<TYPE>::type>::type>::value;
----

[.small]#xref:BloombergLP/bdlb/Variant/2constructor-09.adoc[_» more..._]#

Create a variant from `original` using `basicAllocator`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlb/Variant/2constructor-05.adoc[Variant](
    xref:BloombergLP/bslmf/MovableRef.adoc[bslmf::MovableRef<Variant>] original,
    xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* basicAllocator);
----

[.small]#xref:BloombergLP/bdlb/Variant/2constructor-05.adoc[_» more..._]#

Create a variant with the type and value of `original`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlb/Variant/2constructor-02.adoc[Variant](
    xref:BloombergLP/bdlb/Variant.adoc[Variant] const& original,
    xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* basicAllocator = 0);
----

[.small]#xref:BloombergLP/bdlb/Variant/2constructor-02.adoc[_» more..._]#

Create a variant holding `value` using `basicAllocator`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class TYPE>
xref:BloombergLP/bdlb/Variant/2constructor-0b.adoc[Variant](
    TYPE const& value,
    xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* basicAllocator);
----

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

== Parameters

[cols="1,4"]
|===
| Name| Description
| *original*
| source variant to copy or move from
| *valueOrAllocator*
| held value, or allocator if convertible to `bslma::Allocator *`
| *value*
| value assigned to or stored in this variant
| *basicAllocator*
| allocator used to supply memory
|===


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