[#BloombergLP-bslalg-ConstructorProxy]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslalg.adoc[bslalg]::ConstructorProxy
:relfileprefix: ../../
:mrdocs:

This class acts as a proxy for constructing and destroying an object of parameterized `OBJECT_TYPE`, where `OBJECT_TYPE` may or may not use a `bslma` allocator for supplying memory. The constructors for this proxy class take a `bslma::Allocator *`. If `OBJECT_TYPE` has the `bslma::UsesBslmaAllocator` trait declared, then the supplied allocator will be used to construct the proxied object. Otherwise, the allocator is ignored.

== Synopsis

Declared in `<bslalg_constructorproxy.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class OBJECT_TYPE>
class ConstructorProxy;
----

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslalg/ConstructorProxy/ValueType.adoc[`ValueType`] 
| Alias for the proxied `OBJECT_TYPE`.
| xref:BloombergLP/bslalg/ConstructorProxy/allocator_type.adoc[`allocator_type`] 
| Minimally picky allocator type that can be used to construct a `ConstructorProxy`. Choose `bsl::polymorphic_allocator` If `OBJECT_TYPE` is not AA, `bsl::allocator<char>` if `OBJECT_TYPE` is _legacy‐AA_, and `OBJECT_TYPE::allocator_type` otherwise.
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslalg/ConstructorProxy/2constructor-02.adoc[`ConstructorProxy`]         [.small]#[constructor]#
| Constructors
| xref:BloombergLP/bslalg/ConstructorProxy/2destructor.adoc[`~ConstructorProxy`] [.small]#[destructor]#
| Destroy this proxy and the object held by this proxy.
| xref:BloombergLP/bslalg/ConstructorProxy/object-0e.adoc[`object`] 
| `object` overloads
|===



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