[#BloombergLP-bdlt-operator_dec-0a]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::operator‐‐
:relfileprefix: ../../
:mrdocs:

Decrement operators

== Synopses

Declared in `<bdlt_calendar.h>`

Regress the specified `iterator` to refer to the previous business day in the associated calendar, and return the previous value of `iterator`. The behavior is undefined unless, on entry, `iterator` references a valid business day that is not the first business day for the associated calendar.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlt/Calendar_BusinessDayConstIter.adoc[Calendar_BusinessDayConstIter]
xref:BloombergLP/bdlt/operator_dec-052.adoc[operator‐‐](
    xref:BloombergLP/bdlt/Calendar_BusinessDayConstIter.adoc[Calendar_BusinessDayConstIter]& iterator,
    int);
----

[.small]#xref:BloombergLP/bdlt/operator_dec-052.adoc[_» more..._]#

Set the specified `date` object to have the value that is one day earlier than its current value, and return the value of `date` on entry. The behavior is undefined if the value of `date` on entry is `0001/01/01`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlt/Date.adoc[bdlt::Date]
xref:BloombergLP/bdlt/operator_dec-01.adoc[operator‐‐](
    xref:BloombergLP/bdlt/Date.adoc[Date]& date,
    int);
----

[.small]#xref:BloombergLP/bdlt/operator_dec-01.adoc[_» more..._]#

Regress the specified `iterator` to refer to the previous business day in the associated calendar, and return the previous value of `iterator`. The behavior is undefined unless, on entry, `iterator` references a valid business day that is not the first business day for the associated calendar.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlt/PackedCalendar_BusinessDayConstIterator.adoc[bdlt::PackedCalendar_BusinessDayConstIterator]
xref:BloombergLP/bdlt/operator_dec-05f.adoc[operator‐‐](
    xref:BloombergLP/bdlt/PackedCalendar_BusinessDayConstIterator.adoc[PackedCalendar_BusinessDayConstIterator]& iterator,
    int);
----

[.small]#xref:BloombergLP/bdlt/operator_dec-05f.adoc[_» more..._]#

Regress the specified `iterator` to refer to the previous holiday code for the associated date in the associated calendar, and return the previous value of `iterator`. The behavior is undefined unless, on entry, `iterator` references a valid holiday code that is not the first holiday code for the associated date in the calendar.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlt/PackedCalendar_HolidayCodeConstIterator.adoc[bdlt::PackedCalendar_HolidayCodeConstIterator]
xref:BloombergLP/bdlt/operator_dec-02.adoc[operator‐‐](
    xref:BloombergLP/bdlt/PackedCalendar_HolidayCodeConstIterator.adoc[PackedCalendar_HolidayCodeConstIterator]& iterator,
    int);
----

[.small]#xref:BloombergLP/bdlt/operator_dec-02.adoc[_» more..._]#

Regress the specified `iterator` to refer to the previous holiday in the associated calendar, and return the previous value of `iterator`. The behavior is undefined unless, on entry, `iterator` references a valid holiday that is not the first holiday in the associated calendar.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlt/PackedCalendar_HolidayConstIterator.adoc[bdlt::PackedCalendar_HolidayConstIterator]
xref:BloombergLP/bdlt/operator_dec-0e.adoc[operator‐‐](
    xref:BloombergLP/bdlt/PackedCalendar_HolidayConstIterator.adoc[PackedCalendar_HolidayConstIterator]& iterator,
    int);
----

[.small]#xref:BloombergLP/bdlt/operator_dec-0e.adoc[_» more..._]#

Regress the specified `iterator` to refer to the previous transition in the referenced timetable, and return an iterator referring to the original element (_before_ the decrementation). The behavior is undefined unless, on entry, `iterator` references a valid transition that is not the first transition of the associated timetable.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlt/Timetable_ConstIterator.adoc[bdlt::Timetable_ConstIterator]
xref:BloombergLP/bdlt/operator_dec-0b.adoc[operator‐‐](
    xref:BloombergLP/bdlt/Timetable_ConstIterator.adoc[Timetable_ConstIterator]& iterator,
    int);
----

[.small]#xref:BloombergLP/bdlt/operator_dec-0b.adoc[_» more..._]#

Modify the specified `iterator` to refer to the previous element in the reverse iteration sequence, and return a reverse iterator having the pre‐decrement value of `iterator`. The behavior is undefined unless, on entry, `iterator` does not have the same value as a reverse iterator to the start of the underlying sequence.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class ITERATOR>
xref:BloombergLP/bdlt/CalendarReverseIteratorAdapter.adoc[bdlt::CalendarReverseIteratorAdapter<ITERATOR>]
xref:BloombergLP/bdlt/operator_dec-04.adoc[operator‐‐](
    xref:BloombergLP/bdlt/CalendarReverseIteratorAdapter.adoc[CalendarReverseIteratorAdapter<ITERATOR>]& iterator,
    int);
----

[.small]#xref:BloombergLP/bdlt/operator_dec-04.adoc[_» more..._]#


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