[#BloombergLP-bdlcc-StripedUnorderedContainerImpl-insertBulkUnique]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlcc.adoc[bdlcc]::xref:BloombergLP/bdlcc/StripedUnorderedContainerImpl.adoc[StripedUnorderedContainerImpl]::insertBulkUnique
:relfileprefix: ../../../
:mrdocs:

Insert or update unique keys from the range `[first, last)]`.

== Synopsis

Declared in `<bdlcc_stripedunorderedcontainerimpl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class RANDOM_ITER>
std::size_t
insertBulkUnique(
    RANDOM_ITER first,
    RANDOM_ITER last);
----

== Description

The iterators provide read access to a sequence of `bsl::pair<KEY, VALUE>` objects. If an element having one of the keys already exists in this hash map, set the value attribute to the corresponding value from `data`. All insertions are done by the calling thread and the order of insertion is not specified. Return the number of elements inserted. The behavior is undefined unless `first <= last`.

== Return Value

number of elements inserted

== Parameters

[cols="1,4"]
|===
| Name| Description
| *first*
| beginning of the key‐value range
| *last*
| end of the key‐value range
|===


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