[#BloombergLP-bdlt-Timetable-transitionCodeInEffect-09e]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/Timetable.adoc[Timetable]::transitionCodeInEffect
:relfileprefix: ../../../
:mrdocs:

Return the transition code in effect at `datetime`&period;

== Synopsis

Declared in `&lt;bdlt&lowbar;timetable&period;h&gt;`

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

== Description

Return the transition code associated with the latest transition that occurs on or before the specified `datetime` in this timetable&period; If this timetable has no such transition, return `initialTransitionCode()`&period; The behavior is undefined unless `24 &gt; datetime&period;hour()` and `datetime&period;date()` is within the valid range of this timetable&period;

== Return Value

transition code in effect at `datetime`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *datetime*
| datetime to query
|===


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