[#BloombergLP-bslma-AllocatorTraits_HasSelectOnCopyMethod]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslma.adoc[bslma]::AllocatorTraits_HasSelectOnCopyMethod
:relfileprefix: ../../
:mrdocs:

This `struct` template provides a mechanism for determining whether a given (template parameter) `ALLOCATOR_TYPE` defines a `const` member function named `select_on_container_copy_construction` that takes no arguments and returns an `ALLOCATOR_TYPE` object by value. The static boolean `value` (nested `type` alias) is `true` (`bsl::true_type`) if `ALLOCATOR_TYPE` defines such a method, and `false` (`bsl::false_type`) otherwise.

== Synopsis

Declared in `<bslma_allocatortraits.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class ALLOCATOR_TYPE>
struct AllocatorTraits_HasSelectOnCopyMethod;
----

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslma/AllocatorTraits_HasSelectOnCopyMethod/type.adoc[`type`] 
| `integral_constant` for whether `ALLOCATOR_TYPE` defines `select_on_container_copy_construction`.
|===


== Static Data Members

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslma/AllocatorTraits_HasSelectOnCopyMethod/value.adoc[`value`] 
| `true` if `ALLOCATOR_TYPE` defines a `select_on_container_copy_construction` method.
|===



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