[#BloombergLP-bslalg-ConstructorProxy-2constructor-0bf]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslalg.adoc[bslalg]::xref:BloombergLP/bslalg/ConstructorProxy.adoc[ConstructorProxy]::ConstructorProxy
:relfileprefix: ../../../
:mrdocs:

Construct a proxy, passing a single argument and possibly a specified `allocator` to the constructor of the proxied object, where the non‐allocator argument is the specified `a01` argument if `ARG01` is not a specialization of `ConstructorProxy`, and `a01.object()` if it is such a specialization. If `OBJECT_TYPE` is allocator aware and `allocator_type` is a compatible allocator type, pass `allocator` to the proxied object's constructor; otherwise ignore `allocator`. A compilation error will result unless `OBJECT_TYPE` has a constructor with a signature compatible with `OBJECT_TYPE(ARG01&&)`. Note that, if `ARG01` is `ConstructorProxy<OBJECT_TYPE>`, then these constructors take on the rolls of the extended copy and extended move constructors.

== Synopsis

Declared in `<bslalg_constructorproxy.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class ARG01>
ConstructorProxy(
    ARG01& a01,
    xref:BloombergLP/bslalg/ConstructorProxy.adoc[CtorAllocArgT] const& allocator);
----


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