[#BloombergLP-bdlt-Calendar-addWeekendDays]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/Calendar.adoc[Calendar]::addWeekendDays
:relfileprefix: ../../../
:mrdocs:

Add the specified `weekendDays` to the set of weekend days associated with the weekend‐days transition at January 1, 0001 maintained by this calendar. Create a transition at January 1, 0001 if one does not exist. See {Iterator Invalidation} for information regarding which iterators are affected by the use of this method. The behavior is undefined unless no weekend‐days transitions were added to this calendar via the `addWeekendDaysTransition` method.

== Synopsis

Declared in `<bdlt_calendar.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
addWeekendDays(xref:BloombergLP/bdlt/DayOfWeekSet.adoc[DayOfWeekSet] const& weekendDays);
----


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