[#BloombergLP-bdlt-DayOfWeekSet_Iter-operator_dec-04]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/DayOfWeekSet_Iter.adoc[DayOfWeekSet_Iter]::operator‐‐
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Regress this iterator to the previous valid data element, and return a reference providing modifiable access to this iterator. If there is no preceding data element, the value of `reverse_iterator(*this)` will be `rend()`.

== Synopsis

Declared in `<bdlt_dayofweekset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlt/DayOfWeekSet_Iter.adoc[DayOfWeekSet_Iter]&
operator‐‐();
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