[#bsl-unordered_map-02b-2constructor-04]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_map-02b.adoc[unordered_map]::unordered_map
:relfileprefix: ../../
:mrdocs:

Create an empty unordered map using `basicAllocator`.

== Synopsis

Declared in `<bslstl_unorderedmap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
unordered_map(ALLOCATOR const& basicAllocator);
----

== Description

Same as the preceding overload.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *basicAllocator*
| allocator used to supply memory
|===


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