[#bsl-multimap-0ae-value_compare-operator_call]
= xref:bsl.adoc[bsl]::xref:bsl/multimap-0ae.adoc[multimap]::xref:bsl/multimap-0ae/value_compare.adoc[value_compare]::operator()
:relfileprefix: ../../../
:mrdocs:

Return `true` if the specified `x` object is ordered before the specified `y` object, as determined by the comparator supplied at construction, and `false` otherwise.

== Synopsis

Declared in `<bslstl_multimap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
operator()(
    xref:bsl/multimap-0ae/value_type.adoc[value_type] const& x,
    xref:bsl/multimap-0ae/value_type.adoc[value_type] const& y) const;
----


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