[#bsl-allocator_traits-0108-propagate_on_container_copy_assignment]
= xref:bsl.adoc[bsl]::xref:bsl/allocator_traits-0108.adoc[allocator_traits]::propagate_on_container_copy_assignment
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Identical to, or derived from `true_type` if an allocator of parameterized `ALLOCATOR_TYPE` should be copied when a container using that `ALLOCATOR_TYPE` is copy‐assigned; otherwise identical to or derived from `false_type`. This type is `ALLOCATOR_TYPE::propagate_on_container_copy_assignment` if such a type is defined, and `false_type` otherwise.

== Synopsis

Declared in `<bslma_allocatortraits.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
typedef BloombergLP::bslma::AllocatorTraits_PropOnCopyAssign<ALLOCATOR_TYPE>::type propagate_on_container_copy_assignment;
----


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