[#bsl-unordered_multimap-0b0-2constructor-0f]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_multimap-0b0.adoc[unordered_multimap]::unordered_multimap
:relfileprefix: ../../
:mrdocs:

Create an empty unordered multimap. Optionally specify an `initialNumBuckets` indicating the minimum initial size of the array of buckets of this container. If `initialNumBuckets` is not supplied, a single empty bucket is used. Optionally specify a `hashFunction` used to generate the hash values for the keys contained in this unordered multimap. If `hashFunction` is not supplied, a default‐constructed object of the (template parameter) type `HASH` is used. Optionally specify a key‐equivalence functor `keyEqual` used to verify that two keys are equivalent. If `keyEqual` is not supplied, a default‐constructed object of the (template parameter) type `EQUAL` is used. Optionally specify a `basicAllocator` used to supply memory. If `basicAllocator` is not supplied, a default‐constructed object of the (template parameter) type `ALLOCATOR` is used. If the type `ALLOCATOR` is `bsl::allocator` (the default), then `basicAllocator`, if supplied, shall be convertible to `bslma::Allocator *`. If the type `ALLOCATOR` is `bsl::allocator` and `basicAllocator` is not supplied, the currently installed default allocator is used.

== Synopsis

Declared in `<bslstl_unorderedmultimap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
unordered_multimap();
----


[.small]#Created with https://www.mrdocs.com[MrDocs]#