[#bsl-unordered_multimap-0b0-erase-09a]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_multimap-0b0.adoc[unordered_multimap]::erase
:relfileprefix: ../../
:mrdocs:

Remove from this unordered multimap all `value_type` objects with a key equivalent to the specified `key`, if such exist, and return the number of objects erased; otherwise, if there are no `value_type` objects with a key equivalent to `key`, return 0 with no other effect. This method invalidates only iterators and references to the removed element and previously saved values of the `end()` iterator, and preserves the relative order of the elements not removed.

== Synopsis

Declared in `<bslstl_unorderedmultimap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_multimap-0b0/size_type.adoc[unordered_multimap<KEY, VALUE, HASH, EQUAL, ALLOCATOR>::size_type]
erase(xref:bsl/unordered_multimap-0b0/key_type.adoc[key_type] const& key);
----


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