[#BloombergLP-bslstl-MapComparator-0d-keyComparator-0ec]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/MapComparator-0d.adoc[MapComparator]::keyComparator
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Return a reference providing non‐modifiable access to the function pointer or functor to which this comparator delegates comparison operations.

== Synopsis

Declared in `<bslstl_mapcomparator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
COMPARATOR const&
keyComparator() const;
----


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