[#BloombergLP-bdlt-PackedCalendar-addHolidayIfInRange]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/PackedCalendar.adoc[PackedCalendar]::addHolidayIfInRange
:relfileprefix: ../../../
:mrdocs:

Mark the specified `date` as a holiday (i.e., a non‐business day) in this calendar if `date` is within the valid range. Return 0 if `date` is in range, and a non‐zero value otherwise. This method has no effect if `date` is already marked as a holiday or is not in the valid range. See {Iterator Invalidation} for information regarding which iterators are affected by the use of this method.

== Synopsis

Declared in `<bdlt_packedcalendar.h>`

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


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