[#bsl-map-0af-equal_range-0b]
= xref:bsl.adoc[bsl]::xref:bsl/map-0af.adoc[map<TimeInterval, Node*>]::equal_range
:relfileprefix: ../../
:mrdocs:

Return a pair of iterators providing modifiable access to the sequence of `value_type` objects in this map whose keys are 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. The first returned iterator will be `lower_bound(key)`, the second returned iterator will be `upper_bound(key)`, and, if this map contains no `value_type` objects with an equivalent key, then the two returned iterators will have the same value. Note that although a map maintains unique keys, the range may contain more than one element, because a transparent comparator may have been supplied that provides a different (but compatible) partitioning of keys for `LOOKUP_KEY` as the comparisons used to order the keys in the map.

== Synopsis

Declared in `<bslstl_map.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class LOOKUP_KEY>
xref:bsl/pair-0b.adoc[pair<iterator, iterator>]
equal_range(LOOKUP_KEY const& key)
requires BloombergLP::bslmf::IsTransparentPredicate<COMPARATOR,
                                                   LOOKUP_KEY>::value;
----


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