[#bsl-unordered_multimap-0b0-insert-054]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_multimap-0b0.adoc[unordered_multimap]::insert
:relfileprefix: ../../
:mrdocs:

Insert the specified `value` into this unordered multimap (in constant time if the specified `hint` refers to an element in this container with a key equivalent to the key of `value`), and return an iterator referring to the newly inserted `value_type` object. If `hint` does not refer to an element in this container with a key equivalent to the key of `value`, this operation has worst case `O[N]` and average case constant‐time complexity, where `N` is the size of this unordered multimap. This method requires that the (template parameter) types `KEY` and `VALUE` both be `copy‐insertable` into this unordered multimap (see {Requirements on `KEY` and `VALUE`}). The behavior is undefined unless `hint` is an iterator in the range `[begin() .. end()]` (both endpoints included).

== Synopsis

Declared in `<bslstl_unorderedmultimap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_multimap-0b0/iterator.adoc[unordered_multimap<KEY, VALUE, HASH, EQUAL, ALLOCATOR>::iterator]
insert(
    xref:bsl/unordered_multimap-0b0/const_iterator.adoc[const_iterator] hint,
    xref:bsl/unordered_multimap-0b0/value_type.adoc[value_type] const& value);
----


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