[#BloombergLP-bslalg-operator_3way-0aa]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslalg.adoc[bslalg]::operator<=>
:relfileprefix: ../../
:mrdocs:

Perform a three‐way comparison between the specified `lhs` and `rhs` iterators. The behavior is undefined unless `lhs` and `rhs` are iterators over the same deque.

== Synopsis

Declared in `<bslalg_dequeiterator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
auto
operator<=>(
    xref:BloombergLP/bslalg/DequeIterator-0d.adoc[DequeIterator] const& lhs,
    xref:BloombergLP/bslalg/DequeIterator-0d.adoc[DequeIterator] const& rhs);
----


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