Return a reference providing non-modifiable access to the day of week value referenced by this iterator. The behavior is undefined unless the iterator refers to a valid day of the week, specifically, the behavior is undefined if *this == end().
*this == end()
Declared in <bdlt_dayofweekset.h>
<bdlt_dayofweekset.h>
DayOfWeek::Enum const& operator*() const;