[#bsl-multiset-03-equal_range-07]
= xref:bsl.adoc[bsl]::xref:bsl/multiset-03.adoc[multiset]::equal&lowbar;range
:relfileprefix: ../../
:mrdocs:

Return the half&hyphen;open range of elements equivalent to `key`&period;

== Synopsis

Declared in `&lt;bslstl&lowbar;multiset&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;class LOOKUP&lowbar;KEY&gt;
xref:bsl/pair-0b.adoc[pair&lt;iterator, iterator&gt;]
equal&lowbar;range(LOOKUP&lowbar;KEY const& key)
requires BloombergLP&colon;&colon;bslmf&colon;&colon;IsTransparentPredicate&lt;COMPARATOR,
                                                   LOOKUP&lowbar;KEY&gt;&colon;&colon;value;
----

== Description

Return a pair of iterators providing modifiable access to the sequence of `value&lowbar;type` objects in this multiset equivalent to the specified `key`, where the first iterator is positioned at the start of the sequence and the second is positioned one past the end of the sequence&period; The first returned iterator will be `lower&lowbar;bound(key)`, the second returned iterator will be `upper&lowbar;bound(key)`, and, if this multiset contains no `value&lowbar;type` objects with an equivalent key, then the two returned iterators will have the same value&period;

Note&colon; implemented inline due to Sun CC compilation error&period;

== Return Value

pair of modifiable iterators delimiting the equivalent range

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key*
| transparent key value to look up
|===


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