[#bsl-allocator_traits-0ae-propagate_on_container_swap]
= xref:bsl.adoc[bsl]::xref:bsl/allocator_traits-0ae.adoc[allocator_traits<std::allocator<ALLOCATOR_TYPE>>]::propagate_on_container_swap
:relfileprefix: ../../
:mrdocs:

`true_type` if the allocator propagates on container swap.

== Synopsis

Declared in `<bslma_allocatortraits.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
using typename Base::propagate_on_container_swap;
----


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