[#bsl-map-0a7-equal_range-0e]
= xref:bsl.adoc[bsl]::xref:bsl/map-0a7.adoc[map]::equal_range
:relfileprefix: ../../
:mrdocs:

Return the half‐open range of elements equivalent to `key`.

== Synopses

Declared in `<bslstl_map.h>`

Return the half‐open range of elements equivalent to `key`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/pair-0b.adoc[pair<iterator, iterator>]
xref:bsl/map-0a7/equal_range-09.adoc[equal_range](xref:bsl/map-0a7/key_type.adoc[key_type] const& key);
----

[.small]#xref:bsl/map-0a7/equal_range-09.adoc[_» more..._]#

Return the half‐open range of elements equivalent to `key`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/pair-0b.adoc[pair<const_iterator, const_iterator>]
xref:bsl/map-0a7/equal_range-083.adoc[equal_range](xref:bsl/map-0a7/key_type.adoc[key_type] const& key) const;
----

[.small]#xref:bsl/map-0a7/equal_range-083.adoc[_» more..._]#

Return the half‐open range of elements equivalent to `key`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class LOOKUP_KEY>
xref:bsl/pair-0b.adoc[pair<iterator, iterator>]
xref:bsl/map-0a7/equal_range-0813.adoc[equal_range](LOOKUP_KEY const& key)
requires BloombergLP::bslmf::IsTransparentPredicate<COMPARATOR,
                                                   LOOKUP_KEY>::value;
----

[.small]#xref:bsl/map-0a7/equal_range-0813.adoc[_» more..._]#

Return the half‐open range of elements equivalent to `key`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class LOOKUP_KEY>
xref:bsl/pair-0b.adoc[pair<const_iterator, const_iterator>]
xref:bsl/map-0a7/equal_range-0819.adoc[equal_range](LOOKUP_KEY const& key) const
requires BloombergLP::bslmf::IsTransparentPredicate<COMPARATOR,
                                                   LOOKUP_KEY>::value;
----

[.small]#xref:bsl/map-0a7/equal_range-0819.adoc[_» more..._]#

== Return Value

* pair of iterators delimiting the equivalent range
* pair of const iterators delimiting the equivalent range

== Parameters

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


[.small]#Created with https://www.mrdocs.com[MrDocs]#